Low Power, Rail-to-Rail Output,
Video Op Amp with Ultralow Power Disable
ADA4853-1/ADA4853-2
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2006 Analog Devices, Inc. All rights reserved.
FEATURES
PIN CONFIGURATION
V
OUT
1
+IN
3
2
ADA4853-1
TOP VIEW
(Not to Scale)
V
S
+V
S
6
IN
4
5
POWER DOWN
0
5884
-
00
1
Ultralow power-down current: 0.1 A
Low quiescent current: 1.4 mA/amplifier
Ideal for standard definition video
High speed
100 MHz, -3 dB bandwidth
120 V/s slew rate
Figure 1. 6-Lead SC70
0.5 dB flatness: 22 MHz
Differential gain: 0.20%
NC = NO CONNECT
1
V
OUT
1
2
IN1
3
+IN1
4
V
S
11 V
OUT
2
12 +V
S
10 IN2
9
+IN2
5
N
C
6
N
C
7
N
C
8
N
C
1
5
N
C
1
6
N
C
1
4
P
D
1
1
3
P
D
2
ADA4853-2
0
5884
-
056
Differential phase: 0.10
Single-supply operation
Output swings to within 200 mV of either rail
Rail-to-rail output
Low voltage offset: 2 mV
Wide supply range: 2.65 V to 5 V
APPLICATIONS
Portable multimedia players
Video cameras
Figure 2. Dual 16-Lead LFCSP_VQ
Digital still cameras
Consumer video
GENERAL DESCRIPTION
The ADA4853-1/ADA4853-2 are low power, low cost, high
speed, rail-to-rail output op amps with ultralow power disable
that are ideal for portable consumer electronics. Despite their
low price, the ADA4853-1/ADA4853-2 provide excellent overall
performance and versatility. The 100 MHz, -3 dB bandwidth
and 120 V/s slew rate make these amplifiers well-suited for
many general-purpose, high speed applications.
With their combination of low price, excellent differential gain
(0.2%), differential phase (0.10), and 0.5 dB flatness out to
22 MHz, these amplifiers are ideal for video applications.
The ADA4853-1 is available in a 6-lead SC70 package. The
ADA4853-2 is available in a 16-lead LFCSP_VQ. The
ADA4853-1 works in the extended industrial temperature range
(-40C to +85C), and the ADA4853-2 works in the automotive
temperature range (-40C to +105C).
The ADA4853-1/ADA4853-2 voltage feedback op amps are
designed to operate at supply voltages as low as 2.65 V and up to
5 V using only 1.4 mA of supply current per amplifier. To further
reduce power consumption, the amplifiers are equipped with a
power-down mode that lowers the supply current to less than
1.5 A max, making them ideal in battery-powered applications.
6.5
6.4
6.3
6.2
6.1
6.0
5.9
5.8
5.7
5.6
5.5
0.1
1
10
40
FREQUENCY (MHz)
CL
O
S
E
D
-
L
O
O
P
G
A
I
N
(
d
B
)
V
S
= 5V
R
L
= 150
G = +2
0.1V p-p
2.0V p-p
0
588
4-
010
The ADA4853-1/ADA4853-2 provide users with a true single-
supply capability, allowing input signals to extend 200 mV
below the negative rail and to within 1.2 V of the positive rail.
On the output, the amplifiers can swing within 200 mV of
either supply rail.
Figure 3. 0.5 dB Flatness Frequency Response
ADA4853-1/ADA4853-2
Rev. A | Page 2 of 16
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Pin Configuration............................................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Specifications with 3 V Supply ................................................... 3
Specifications with 5 V Supply ................................................... 4
Absolute Maximum Ratings............................................................ 5
Thermal Resistance ...................................................................... 5
ESD Caution.................................................................................. 5
Typical Performance Characteristics ..............................................6
Circuit Description......................................................................... 13
Headroom Considerations........................................................ 13
Overload Behavior and Recovery ............................................ 13
Applications..................................................................................... 14
Single-Supply Video Amplifier................................................. 14
Power Supply Bypassing ............................................................ 14
Layout .......................................................................................... 14
Outline Dimensions ....................................................................... 15
Ordering Guide .......................................................................... 15
REVISION HISTORY
7/06--Rev. 0 to Rev. A
Added ADA4853-2.............................................................Universal
Changes to Features and General Description ............................. 1
Changes to Table 1............................................................................ 3
Changes to Table 2............................................................................ 4
Changes to Table 3............................................................................ 5
Changes to Figure 7,......................................................................... 6
Changes to Figure 11 Caption, Figure 12, Figure 13,
and Figure 16..................................................................................... 7
Changes to Figure 17 and Figure 19............................................... 8
Inserted Figure 21; Renumbered Sequentially.............................. 8
Inserted Figure 25; Renumbered Sequentially.............................. 9
Changes to Figure 28........................................................................ 9
Changes to Figure 31 through Figure 35..................................... 10
Changes to Figure 37, Figure 39 through Figure 42 .................. 11
Inserted Figure 43 and Figure 46.................................................. 12
Inserted Figure 47........................................................................... 13
Changes to Circuit Description Section...................................... 13
Changes to Headroom Considerations Section ......................... 13
Changes to Figure 48...................................................................... 14
Updated Outline Dimensions....................................................... 15
Changes to Ordering Guide .......................................................... 15
1/06--Revision 0: Initial Version
ADA4853-1/ADA4853-2
Rev. A | Page 3 of 16
SPECIFICATIONS
SPECIFICATIONS WITH 3 V SUPPLY
T
A
= 25C, R
F
= 1 k, R
G
= 1 k for G = +2, R
L
= 150 , unless otherwise noted.
Table 1.
Parameter Conditions
Min
Typ
Max
Unit
DYNAMIC PERFORMANCE
-3 dB Bandwidth
G = +1, V
O
= 0.1 V p-p
90
MHz
G = +2, V
O
= 2 V p-p
32
MHz
Bandwidth for 0.5 dB Flatness
G = +2, V
O
= 2 V p-p, R
L
= 150
22
MHz
Settling Time to 0.1%
V
O
= 2 V step
45
ns
Slew Rate
G = +2, V
O
= 2 V step
88
100
V/s
NOISE/DISTORTION PERFORMANCE
Differential Gain
R
L
= 150
0.20
%
Differential Phase
R
L
= 150
0.10
Degrees
Input Voltage Noise
f = 100 kHz
22
nV/Hz
Input Current Noise
f = 100 kHz
2.2
pA/Hz
Crosstalk
G = +2, V
O
= 2 V p-p, R
L
= 150 , f = 5 MHz
-66
dB
DC PERFORMANCE
Input Offset Voltage
2
3.3
mV
Input Offset Voltage Drift
1.6
V/C
Input Bias Current
1.0
1.6
A
Input Bias Current Drift
4
nA/C
Input Bias Offset Current
50
nA
Open-Loop Gain
V
O
= 0.5 V to 2.5 V
72
80
dB
INPUT CHARACTERISTICS
Input Resistance
Differential/common mode
0.5/20
M
Input Capacitance
0.6
pF
Input Common-Mode Voltage Range
-0.2 to +V
CC
- 1.2
V
Input Overdrive Recovery Time (Rise/Fall)
V
IN
= -0.5 V to +3.5 V, G = +1
40
ns
Common-Mode Rejection Ratio
V
CM
= 0.5 V
-70
-85
dB
POWER-DOWN
Power-Down Input Voltage
Power-down
1.2
V
Turn-Off Time
1.4
s
Turn-On Time
120
ns
Power-Down Bias Current
Enabled Power-down
=
3.0
V
25
30
A
Power-Down Power-down
=
0
V
0.01
A
OUTPUT CHARACTERISTICS
Output Overdrive Recovery Time
V
IN
= -0.25 to +1.75 V, G = +2
70
ns
Output Voltage Swing
R
L
= 150
0.3 to 2.7
0.15 to 2.88
V
Short-Circuit Current
Sinking/sourcing
150/120
mA
POWER SUPPLY
Operating Range
2.65
5
V
Quiescent Current
1.3
1.5
mA/amplifier
Quiescent Current (Power-Down)
Power-down = low
0.1
1.5
A
Positive Power Supply Rejection
+V
S
= +1.5 V to +2.5 V, -V
S
= -1.5 V
-76
-86
dB
Negative Power Supply Rejection
-V
S
= -1.5 V to -2.5 V, +V
S
= +1.5 V
-79
-88
dB
ADA4853-1/ADA4853-2
Rev. A | Page 4 of 16
SPECIFICATIONS WITH 5 V SUPPLY
T
A
= 25C, R
F
= 1 k, R
G
= 1 k for G = +2, R
L
= 150 , unless otherwise noted.
Table 2.
Parameter Conditions
Min
Typ
Max
Unit
DYNAMIC PERFORMANCE
-3 dB Bandwidth
G = +1, V
O
= 0.1 V p-p
100
MHz
G = +2, V
O
= 2 V p-p
35
MHz
Bandwidth for 0.5 dB Flatness
G = +2, V
O
= 2 V p-p
22
MHz
Settling Time to 0.1%
V
O
= 2 V step
54
ns
Slew Rate
G = +2, V
O
= 2 V step
93
120
V/s
NOISE/DISTORTION PERFORMANCE
Differential Gain
R
L
= 150
0.22
%
Differential Phase
R
L
= 150
0.10
Degrees
Input Voltage Noise
f = 100 kHz
22
nV/Hz
Input Current Noise
f = 100 kHz
2.2
pA/Hz
Crosstalk
G = +2, V
O
= 2 V p-p, R
L
= 150 , f = 5 MHz
-66
dB
DC PERFORMANCE
Input Offset Voltage
2
3.3
mV
Input Offset Voltage Drift
1.6
V/C
Input Bias Current
1.0
1.6
A
Input Bias Current Drift
4
nA/C
Input Bias Offset Current
60
nA
Open-Loop Gain
V
O
= 0.5 V to 4.5 V
72
80
dB
INPUT CHARACTERISTICS
Input Resistance
Differential/common mode
0.5/20
M
Input Capacitance
0.6
pF
Input Common-Mode Voltage Range
-0.2 to
+V
CC
- 1.2
V
Input Overdrive Recovery Time (Rise/Fall)
V
IN
= -0.5 V to +5.5 V, G = +1
40
ns
Common-Mode Rejection Ratio
V
CM
= 0.5 V
-72
-88
dB
POWER-DOWN
Power-Down Input Voltage
Power-down
1.2
V
Turn-Off Time
1.5
s
Turn-On Time
120
ns
Power-Down Bias Current
Enabled Power-down
=
5
V
40
50
A
Power-Down Power-down
=
0
V
0.01
A
OUTPUT CHARACTERISTICS
Output Overdrive Recovery Time
V
IN
= -0.25 V to +2.75 V, G = +2
55
ns
Output Voltage Swing
R
L
= 75
0.55 to 4.5
0.1 to 4.8
V
Short-Circuit Current
Sinking/sourcing
160/120
mA
POWER SUPPLY
Operating Range
2.65
5
V
Quiescent Current
1.4
1.6
mA/amplifier
Quiescent Current (Power-Down)
Power-down = low
0.1
1.5
A
Positive Power Supply Rejection
+V
S
= +2.5 V to +3.5 V, -V
S
= -2.5 V
-75
-80
dB
Negative Power Supply Rejection
-V
S
= -2.5 V to -3.5 V, +V
S
= +2.5 V
-75
-80
dB
ADA4853-1/ADA4853-2
Rev. A | Page 5 of 16
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter Rating
The power dissipated in the package (P
D
) for a sine wave and a
resistor load is the total power consumed from the supply
minus the load power.
Supply Voltage
5.5 V
Power Dissipation
See Figure 4
P
D
= Total Power Consumed - Load Power
Common-Mode Input Voltage
-V
S
- 0.2 V to +V
S
- 1.2 V
(
)
L
OUT
CURRENT
SUPPLY
VOLTAGE
SUPPLY
D
R
V
I
V
P
2
=
Differential Input Voltage
V
S
Storage Temperature Range
-65C to +125C
Operating Temperature Range
RMS output voltages should be considered.
6-Lead SC70
-40C to +85C
16-Lead LFCSP_VQ
-40C to +105C
Airflow increases heat dissipation, effectively reducing
JA
.
In addition, more metal directly in contact with the package
leads and through holes under the device reduces
JA
.
Lead Temperature
JEDEC J-STD-20
Junction Temperature
150C
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
Figure 4 shows the maximum safe power dissipation in the
package vs. the ambient temperature for the 6-lead SC70
(430C/W) and for the 16-lead LFCSP_VQ (63C/W) on a
JEDEC standard 4-layer board.
JA
values are approximations.
2.5
0
125
105
85
65
45
25
5
15
35
55
0
588
4-
0
59
AMBIENT TEMPERATURE (C)
M
AX
I
M
UM
P
O
W
E
R DI
S
S
I
P
AT
I
O
N (
W
)
2.0
1.5
1.0
0.5
SC70-6
LFCSP-16
THERMAL RESISTANCE
JA
is specified for the worst-case conditions, that is,
JA
is
specified for device soldered in circuit board for surface-mount
packages.
Table 4. Thermal Resistance
Package Type
JA
Unit
6-Lead SC70
430
C/W
16-Lead LFCSP_VQ
63
C/W
Maximum Power Dissipation
The maximum safe power dissipation for the ADA4853-1/
ADA4853-2 is limited by the associated rise in junction
temperature (T
J
) on the die. At approximately 150C, which is
the glass transition temperature, the plastic changes its properties.
Even temporarily exceeding this temperature limit can change
the stresses that the package exerts on the die, permanently
shifting the parametric performance of the amplifiers. Exceeding
a junction temperature of 150C for an extended period can
result in changes in silicon devices, potentially causing
degradation or loss of functionality.
Figure 4. Maximum Power Dissipation vs. Temperature for a 4-Layer Board
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on
the human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
ADA4853-1/ADA4853-2
Rev. A | Page 6 of 16
TYPICAL PERFORMANCE CHARACTERISTICS
2
6
0.1
200
FREQUENCY (MHz)
NO
RM
AL
I
Z
E
D
C
L
O
S
E
D-
L
O
O
P
G
AI
N (
d
B)
1
10
100
1
0
1
2
3
4
5
G = 1
G = +2
G = +10
V
S
= 5V
R
L
= 150
V
OUT
= 0.1V p-p
05
88
4-
00
6
R
L
C
L
R
SNUB
5
3
4
0
3
4
5
2
1
1
2
6
0.1
1
10
100 200
FREQUENCY (MHz)
C
L
OS
E
D
-LO
O
P
GA
IN
(
d
B
)
V
S
= 5V
R
L
= 150
V
OUT
= 0.1V p-p
G = +1
C
L
= 0pF
C
L
= 5pF
C
L
= 10pF
05
88
4-
0
09
C
L
= 10pF/25 SNUB
Figure 8. Small Signal Frequency Response for Various Capacitive Loads
Figure 5. Small Signal Frequency Response for Various Gains
6.5
6.4
6.3
6.2
6.1
6.0
5.9
5.8
5.7
5.6
5.5
0.1
1
10
40
FREQUENCY (MHz)
CL
O
SED-
L
O
O
P
G
AIN
(
d
B
)
V
S
= 5V
R
L
= 150
G = +2
0.1V p-p
2.0V p-p
05
88
4-
0
10
V
S
= 5V
G = +1
V
OUT
= 0.1V p-p
R
L
= 75
FREQUENCY (MHz)
CL
OS
E
D
-
L
O
O
P
G
A
I
N
(
d
B
)
3
2
0
1
1
2
3
4
5
6
0.1
1
10
100 200
R
L
= 150
R
L
= 1k
0
58
84
-
00
7
Figure 6. Small Signal Frequency Response for Various Loads
Figure 9. 0.5 dB Flatness Response for Various Output Voltages
FREQUENCY (MHz)
CL
O
S
E
D
-L
O
O
P
G
AIN
(
dB)
4
3
2
1
1
0
4
5
3
2
6
0.1
1
10
100 200
G = +1
R
L
= 150
V
OUT
= 0.1V p-p
V
S
= 3V
V
S
= 5V
0
588
4-
008
FREQUENCY (MHz)
1
0
1
2
3
4
5
6
NO
RM
AL
I
Z
E
D
CL
O
S
E
D-
L
O
O
P
G
AI
N
(d
B)
0.1
1
10
100
200
V
S
= 5V
R
L
= 150
V
OUT
= 2V p-p
G = 1
G = +2
G = +10
0
588
4-
0
11
Figure 10. Large Signal Frequency Response for Various Gains
Figure 7. Small Signal Frequency Response for Various Supplies
ADA4853-1/ADA4853-2
Rev. A | Page 7 of 16
CL
O
S
E
D-
L
O
O
P
G
AI
N
(d
B)
7
6
5
4
3
2
1
0
FREQUENCY (MHz)
0.1
200
1
10
100
V
S
= 5V
V
OUT
= 2V p-p
G = +2
R
L
= 1k
R
L
= 75
R
L
= 150
0
588
4-
0
12
250
200
100
150
50
0
0
0.5
1.5
2.5
3.5
1.0
2.0
3.0
4.0
OUTPUT VOLTAGE STEP (V)
SL
EW
R
A
T
E
(
V
/s
)
NEGATIVE SLEW RATE
POSITIVE SLEW RATE
V
S
= 5V
R
L
= 150
G = +2
0
58
84
-
01
5
Figure 11. Large Signal Frequency Response for Various Loads
Figure 14. Slew Rate vs. Output Voltage
C
L
OS
E
D
-
L
OO
P
G
A
I
N
(
d
B
)
5
3
4
2
1
0
1
2
3
4
5
6
FREQUENCY (MHz)
0.1
1
10
100 200
V
S
= 3V
R
L
= 150
V
OUT
= 0.1V p-p
G = +1
+25C
+85C
40C
05
88
4-
0
13
140
20
100
FREQUENCY (Hz)
O
P
E
N
-
L
OO
P
GA
IN
(
d
B
)
O
P
E
N
-
L
O
O
P
P
HAS
E
(
D
e
g
r
ees)
1k
10k
100k
1M
10M
100M
120
100
80
60
40
20
0
240
210
180
150
120
90
60
30
0
GAIN
PHASE
0
58
84
-
02
9
V
S
= 5V
R
L
= 150
Figure 12. Small Signal Frequency Response for Various Temperatures
Figure 15. Open-Loop Gain and Phase vs. Frequency
FREQUENCY (MHz)
4
3
2
0
1
1
2
4
3
6
5
0.1
1
10
100 200
V
S
= 5V
R
L
= 150
V
OUT
= 0.1V p-p
G = +1
C
L
O
S
ED
-L
O
O
P G
A
I
N
(d
B
)
+25C
+85C
40C
05
88
4-
0
14
20
90
80
70
60
50
40
30
100
1k
10k
100k
1M
10M
100M
CO
M
M
O
N-
M
O
DE
RE
J
E
CT
I
O
N (
d
B)
FREQUENCY (Hz)
05
88
4-
030
V
S
= 5V
Figure 13. Small Signal Frequency Response for Various Temperatures
Figure 16. Common-Mode Rejection vs. Frequency
ADA4853-1/ADA4853-2
Rev. A | Page 8 of 16
FREQUENCY (MHz)
40
50
70
60
80
90
100
110
0.1
1
10
G = +2
V
S
= 3V
V
OUT
= 2V p-p
R
L
= 1k HD3
R
L
= 1k HD2
R
L
= 150 HD3
R
L
= 150 HD2
HA
R
M
O
NI
C
DI
S
T
O
RT
I
O
N
(
d
Bc
)
05
88
4-
0
16
0
100
100
1k
10k
100k
1M
10M
100M
P
O
W
E
R S
U
P
P
L
Y
RE
JE
CT
I
O
N
(
d
B)
FREQUENCY (Hz)
V
S
= 5V
10
20
30
40
50
60
70
80
90
+PSR
PSR
05
88
4-
0
31
Figure 17. Power Supply Rejection vs. Frequency
Figure 20. Harmonic Distortion vs. Frequency
1000
0.01
0.1
1
10
100
100
1k
10k
100k
1M
10M
100M
CL
O
S
E
D-
L
O
O
P
O
UT
P
UT
I
M
P
E
DANCE
(
)
FREQUENCY (Hz)
05
88
4-
032
V
S
= 5V
G = +1
G = +2
V
S
= 5V
V
OUT
= 2V p-p
R
L
= 1k HD3
R
L
= 1k HD2
R
L
= 150 HD2
R
L
= 150 HD3
40
50
70
60
80
90
100
120
110
0.1
1
10
FREQUENCY (MHz)
HA
R
M
O
NI
C
D
I
S
T
O
RT
I
O
N
(
d
B
c)
05
88
4-
0
17
Figure 21. Harmonic Distortion vs. Frequency
Figure 18. Output Impedance vs. Frequency Enabled
G = +1
V
S
= 5V
V
OUT
= 2V p-p
R
L
= 75 HD3
R
L
= 75 HD2
R
L
= 150 HD2
R
L
= 150 HD3
R
L
= 1k HD3
R
L =
1k HD2
40
50
70
60
80
90
100
120
110
0.1
1
10
FREQUENCY (MHz)
HA
R
M
O
NI
C
D
I
S
T
O
RT
I
O
N
(
d
B
c)
0
58
84
-
01
8
10M
100
1k
10k
100k
1M
10M
100M
FREQUENCY (Hz)
CL
O
S
E
D-
L
O
O
P
O
UT
P
UT
I
M
P
E
DANCE
(
)
10
100
1k
10k
100k
1M
V
S
= 5V
G = +1
05
88
4-
0
50
Figure 22. Harmonic Distortion vs. Frequency
Figure 19. Output Impedance vs. Frequency Disabled
ADA4853-1/ADA4853-2
Rev. A | Page 9 of 16
30
100
0.1
10
FREQUENCY (MHz)
H
ARM
O
N
I
C
DI
S
T
O
R
T
I
O
N
(
d
Bc)
1
40
50
60
70
80
90
G = +2
V
OUT
= 2V p-p
R
L
= 75
V
S
= 3V HD3
V
S
= 5V HD2
V
S
= 5V HD3
V
S
= 3V HD2
05
88
4-
05
1
2.60
2.40
2.42
2.44
2.46
2.48
2.50
2.52
2.54
2.56
2.58
OU
T
P
U
T
V
O
LTA
GE
(
V
)
G = +1; C
L
= 5pF
G = +2; C
L
= 0pF, 5pF, 10pF
V
S
= 5V
R
L
= 150
25ns/DIV
05
88
4-
0
34
Figure 26. Small Signal Pulse Response for Various Capacitive Loads
Figure 23. Harmonic Distortion vs. Frequency
0
1
2
3
HD2
HD3
4
V
OUT
(V p-p)
40
50
70
60
80
90
100
120
110
HA
R
M
O
NI
C
D
I
S
T
O
RT
I
O
N
(
d
B
c)
05
884
-
0
19
2V
5V
GND
G = +1
V
S
= 5V
R
L
= 150
f = 100kHz
O
UT
P
UT
V
O
L
T
AG
E
(
V
)
05
88
4-
03
5
G = +2
R
L
= 150
25ns/DIV
V
S
= 3V, 5V
3.75
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
3.25
3.50
Figure 24. Harmonic Distortion for Various Output Voltages
Figure 27. Large Signal Pulse Response for Various Supplies
O
UT
P
UT
V
O
L
T
AG
E
(
V
)
05
88
4-
03
3
G = +2
R
L
= 150
25ns/DIV
V
S
= 3V
V
S
= 5V
2.60
2.40
2.42
2.44
2.46
2.48
2.50
2.52
2.54
2.56
2.58
3.75
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
3.25
3.50
O
UT
P
UT
V
O
L
T
AG
E
(
V
)
05
88
4-
03
6
G = +2
V
S
= 5V
R
L
= 150
25ns/DIV
C
L
= 0pF, 20pF
Figure 25. Small Signal Pulse Response for Various Supplies
Figure 28. Large Signal Pulse Response for Various Capacitive Loads
ADA4853-1/ADA4853-2
Rev. A | Page 10 of 16
100
1
10
10
100
1k
10k
100k
1M
10M
C
URRE
N
T
NO
I
S
E
(
p
A/
H
z
)
FREQUENCY (Hz)
05
88
4-
0
38
100ns/DIV
5.5
4.5
3.5
2.5
1.5
0.5
0.5
I
NP
UT
AND O
UT
P
UT
V
O
L
T
AG
E
(
V
)
OUTPUT
2 INPUT
V
S
= 5V
G = +2
R
L
= 150
f = 1MHz
05
88
4-
0
20
Figure 29. Output Overdrive Recovery
Figure 32. Current Noise vs. Frequency
100ns/DIV
5.5
4.5
3.5
2.5
1.5
0.5
0.5
I
NP
UT
AND O
UT
P
UT
V
O
L
T
AG
E
(
V
)
V
S
= 5V
G = +1
R
L
= 150
f = 1MHz
INPUT
OUTPUT
05
88
4-
0
21
20
18
16
14
12
10
8
6
4
2
0
4
4
3
2
1
1
3
0
2
CO
UNT
V
OFFSET
(mV)
05
88
4-
0
42
V
S
= 5V
N = 155
x = 0.370mV
= 0.782
Figure 33. V
OS
Distribution
Figure 30. Input Overdrive Recovery
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
1.0 0.5
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
V
CM
(V)
V
OS
(m
V
)
0
58
84
-
02
2
V
S
= 5V
10
100
1k
10k
100k
1M
10M
V
O
L
T
AG
E
NO
I
S
E
(
n
V
/
Hz
)
FREQUENCY (Hz)
1000
10
100
05
88
4-
0
37
Figure 31. Voltage Noise vs. Frequency
Figure 34. V
OS
vs. Common-Mode Voltage
ADA4853-1/ADA4853-2
Rev. A | Page 11 of 16
3.0
2.8
2.6
2.4
0.6
0.4
0.2
0
1
OU
TP
U
T
V
O
LT
A
G
E
(
V
)
LOAD RESISTANCE ()
10
100
1k
10k
NEGATIVE SWING
V
S
= 3V
POSITIVE SWING
LOAD RESISTANCE TIED
TO MIDSUPPLY
05
88
4-
0
39
1.5
1.0
0.5
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
POWER DOWN VOLTAGE (V)
S
UP
P
L
Y
C
URRE
N
T
(
m
A)
V
S
= 5V, T = +85C
V
S
= 5V, T = +25C
V
S
= 5V, T = 40C
V
S
= 3V, T = 40C
V
S
= 3V, T = +25C
V
S
= 3V, T = +85C
0
588
4-
0
23
POWER DOWN
Figure 35. Supply Current vs.
Voltage
Figure 38. Output Voltage vs. Load Resistance
5.0
4.8
4.6
4.4
0.6
0.4
0.2
0
10
100
10k
1k
OU
TP
U
T
V
O
LT
A
G
E
(
V
)
LOAD RESISTANCE ()
POSITIVE SWING
V
S
= 5V
NEGATIVE SWING
LOAD RESISTANCE TIED
TO MIDSUPPLY
05
88
4-
0
40
0.6
0.7
0.8
0.9
1.0
50
25
0
25
50
75
100
TEMPERATURE (C)
I
N
PU
T
O
F
F
SET
VO
L
T
A
G
E (
m
V
)
V
S
= 5V
V
S
= 3V
05
88
4-
02
6
Figure 36. Input Offset Voltage vs. Temperature
Figure 39. Output Voltage vs. Load Resistance
0.50
0.68
40
20
0
20
40
60
80
TEMPERATURE (C)
I
NP
UT
BI
AS
CUR
RE
NT
(
A)
0.52
0.54
0.56
0.58
0.60
0.62
0.64
0.66
V
S
= 5V
V
S
= 3V
+I
B
I
B
05
88
4-
02
7
O
UT
P
UT
V
O
L
T
AG
E
(
V
)
3.0
2.9
2.8
2.7
2.6
2.5
0.5
0.4
0.3
0.2
0.1
0
V
S
= 3V
0
5
LOAD CURRENT (mA)
5
10
15
20
25
30
35
40
45
05
88
4-
0
41
0
NEGATIVE SWING
POSITIVE SWING
Figure 40. Output Voltage vs. Load Current
Figure 37. Input Bias Current vs. Temperature
ADA4853-1/ADA4853-2
Rev. A | Page 12 of 16
O
UT
P
UT
V
O
L
T
AG
E
(
V
)
5.0
4.9
4.8
4.7
4.6
4.5
0.5
0.4
0.3
0.2
0.1
0
V
S
= 5V
0
50
6
5
4
2
3
1
0
3
2
1
0
1
0
1
2
3
4
5
6
7
8
9
10
P
O
W
E
R DO
W
N
P
I
N V
O
L
T
AG
E
(
V
)
OUT
P
UT
VOL
T
AGE
(
V)
TIME (s)
LOAD CURRENT (mA)
5
10
15
20
25
30
35
40
45
05
88
4-
0
52
NEGATIVE SWING
POSITIVE SWING
POWER DOWN
V
OUT
Figure 41. Output Voltage vs. Load Current
0.25
0
TEMPERATURE (C)
O
UT
P
UT
S
AT
U
RAT
I
O
N V
O
L
T
A
G
E
(
V
)
0.20
0.15
0.10
0.05
40
20
0
20
40
60
80
R
L
= 150
V
S
= 3V
V
SAT
+V
SAT
V
S
= 5V
05
88
4-
05
3
Figure 42. Output Saturation Voltage vs. Temperature for Various Supplies
+0.001
(+0.1%)
0.001
(0.1%)
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
TIME (ns)
VO
L
T
A
G
E (
V)
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
V
S
= 5V
R
L
= 150
V
OUTPUT
2V
INPUT
2V
INPUT
V
OUTPUT
2V
IN
P
U
T
V
OU
T
P
U
T
(V
)
05
88
4-
04
5
Figure 43. 0.1% Settling Time
G = +2
V
S
= 5V
f
IN
= 100kHz
05
88
4-
0
46
Figure 44. Enable/Disable Time
40
100
100k
200M
FREQUENCY (Hz)
C
R
O
S
S
TA
LK
(
dB
)
1M
10M
100M
50
60
70
80
90
V
S
= 5V
G = +2
R
L
= 150
V
OUT
= 2V p-p
V
OUT
1 TO V
OUT
2
V
OUT
2 TO V
OUT
1
0
58
84
-
05
4
Figure 45. Crosstalk vs. Frequency
0
100
0.1
200
FREQUENCY (MHz)
IN
P
U
T-
T
O
-
O
U
T
P
U
T
IS
OLA
T
ION
(
d
B
)
1
10
100
20
40
60
80
V
S
= 5V
R
L
= 150
V
OUT
= 2V p-p
G = +2
05
88
4-
05
5
Figure 46. Input-to-Output Isolation, Chip Disabled
ADA4853-1/ADA4853-2
Rev. A | Page 13 of 16
CIRCUIT DESCRIPTION
The ADA4853-1/ADA4853-2 feature a high slew rate input
stage that is a true single-supply topology capable of sensing
signals at or below the minus supply rail. The rail-to-rail output
stage can pull within 100 mV of either supply rail when driving
light loads and within 200 mV when driving 150 . High speed
performance is maintained at supply voltages as low as 2.65 V.
For signals approaching the minus supply and inverting gain
and high positive gain configurations, the headroom limit is the
output stage. The ADA4853-1/ADA4853-2 use a common
emitter output stage. This output stage maximizes the available
output range, limited by the saturation voltage of the output
transistors. The saturation voltage increases with the drive
current that the output transistor is required to supply due to
the output transistor's collector resistance.
HEADROOM CONSIDERATIONS
The ADA4853-1/ADA4853-2 are designed for use in low
voltage systems. To obtain optimum performance, it is useful to
understand the behavior of the amplifiers as input and output
signals approach their headroom limits. The amplifiers' input
common-mode voltage range extends from the negative supply
voltage (actually 200 mV below this) to within 1.2 V of the
positive supply voltage.
As the saturation point of the output stage is approached, the
output signal shows increasing amounts of compression and
clipping. As in the input headroom case, higher frequency
signals require a bit more headroom than the lower frequency
signals. Figure 24 illustrates this point by plotting the typical
distortion vs. the output amplitude.
OVERLOAD BEHAVIOR AND RECOVERY
Exceeding the headroom limits is not a concern for any
inverting gain on any supply voltage, as long as the reference
voltage at the amplifiers' positive input lies within the
amplifiers' input common-mode range.
Input
The specified input common-mode voltage of the ADA4853-1/
ADA4853-2 is 200 mV below the negative supply to within
1.2 V of the positive supply. Exceeding the top limit results in
lower bandwidth and increased rise time. Pushing the input
voltage of a unity-gain follower to less than 1.2 V from the
positive supply leads to an increasing amount of output error as
well as increased settling time. The recovery time from input
voltages 1.2 V or closer to the positive supply is approximately
40 ns; this is limited by the settling artifacts caused by
transistors in the input stage coming out of saturation.
The input stage is the headroom limit for signals approaching
the positive rail. Figure 47 shows a typical offset voltage vs. the
input common-mode voltage for the ADA4853-1/ADA4853-2
on a 5 V supply. Accurate dc performance is maintained from
approximately 200 mV below the minus supply to within 1.2 V
of the positive supply. For high speed signals, however, there are
other considerations. As the common-mode voltage gets within
1.2 V of positive supply, the amplifier responds well but the
bandwidth begins to drop as the common-mode voltage
approaches the positive supply. This can manifest itself in
increased distortion or settling time. Higher frequency signals
require more headroom than the lower frequencies to maintain
distortion performance.
The amplifiers do not exhibit phase reversal, even for input
voltages beyond the voltage supply rails. Going more than
0.6 V beyond the power supplies turns on protection diodes
at the input stage, greatly increasing the current draw of the
devices.
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
1.0 0.5
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
V
CM
(V)
V
OS
(m
V)
0
58
84
-
02
2
V
S
= 5V
Figure 47. V
OS
vs. Common-Mode Voltage, V
S
= 5 V
ADA4853-1/ADA4853-2
Rev. A | Page 14 of 16
APPLICATIONS
SINGLE-SUPPLY VIDEO AMPLIFIER
LAYOUT
With low differential gain and phase errors and wide 0.5 dB
flatness, the ADA4853-1/ADA4853-2 are ideal solutions for
portable video applications.
As is the case with all high speed applications, careful attention
to printed circuit board (PCB) layout details prevents associated
board parasitics from becoming problematic. The ADA4853-1/
ADA4853-2 can operate up to 100 MHz; therefore, proper RF
design techniques must be employed. The PCB should have a
ground plane covering all unused portions of the component
side of the board to provide a low impedance return path.
Removing the ground plane on all layers from the area near and
under the input and output pins reduces stray capacitance.
Signal lines connecting the feedback and gain resistors should
be kept as short as possible to minimize the inductance and
stray capacitance associated with these traces. Termination
resistors and loads should be located as close as possible to their
respective inputs and outputs. Input and output traces should
be kept as far apart as possible to minimize coupling (crosstalk)
through the board. Adherence to microstrip or stripline design
techniques for long signal traces (greater than 1 inch) is
recommended. For more information on high speed board
layout, go to: www.analog.com to view A Practical Guide to
High-Speed Printed-Circuit-Board Layout.
Figure 48 shows a typical video
driver set for a noninverting gain of +2, where R
F
= R
G
= 1 k.
The video amplifier input is terminated into a shunt 75
resistor. At the output, the amplifier has a series 75 resistor
for impedance matching to the video load.
When operating in low voltage, single-supply applications, the
input signal is only limited by the input stage headroom.
75 CABLE
V
OUT
75
75
V
IN
R
G
R
F
+V
S
P
D
U1
C1
2.2F
C2
0.01F
0
58
84
-
0
43
+
V
Figure 48. Video Amplifier
POWER SUPPLY BYPASSING
Attention must be paid to bypassing the power supply pins of
the ADA4853-1/ADA4853-2. High quality capacitors with low
equivalent series resistance (ESR), such as multilayer ceramic
capacitors (MLCCs), should be used to minimize supply voltage
ripple and power dissipation. A large, usually tantalum, 2.2 F
to 47 F capacitor located in proximity to the ADA4853-1/
ADA4853-2 is required to provide good decoupling for lower
frequency signals. The actual value is determined by the circuit
transient and frequency requirements. In addition, 0.1 F MLCC
decoupling capacitors should be located as close to each of the
power supply pins as is physically possible, no more than
inch away. The ground returns should terminate immediately
into the ground plane. Locating the bypass capacitor return
close to the load return minimizes ground loops and improves
performance.
ADA4853-1/ADA4853-2
Rev. A | Page 15 of 16
OUTLINE DIMENSIONS
COMPLIANT TO JEDEC STANDARDS MO-203-AB
0.22
0.08
0.30
0.15
1.00
0.90
0.70
SEATING
PLANE
4
5
6
3
2
1
PIN 1
0.65 BSC
1.30 BSC
0.10 MAX
0.10 COPLANARITY
0.40
0.10
1.10
0.80
2.20
2.00
1.80
2.40
2.10
1.80
1.35
1.25
1.15
0.46
0.36
0.26
Figure 49. 6-Lead Thin Shrink Small Outline Transistor Package [SC70]
(KS-6)
Dimensions shown in millimeters
1
0.50
BSC
0.60 MAX
PIN 1
INDICATOR
1.50 REF
0.50
0.40
0.30
0.25 MIN
0.45
2.75
BSC SQ
TOP
VIEW
12 MAX
0.80 MAX
0.65 TYP
SEATING
PLANE
PIN 1
INDICATOR
0.90
0.85
0.80
0.30
0.23
0.18
0.05 MAX
0.02 NOM
0.20 REF
3.00
BSC SQ
*1.65
1.50 SQ
1.35
16
5
13
8
9
12
4
EXPOSED
PAD
(BOTTOM VIEW)
*COMPLIANT TO JEDEC STANDARDS MO-220-VEED-2
EXCEPT FOR EXPOSED PAD DIMENSION.
Figure 50. 16-Lead Lead Frame Chip Scale Package [LFCSP_VQ]
3 mm 3 mm Body, Very Thin Quad
(CP-16-3)
Dimensions shown in millimeters
ORDERING GUIDE
Temperature
Range
Ordering
Quantity
Package
Option
Model
Package Description
Branding
ADA4853-1AKSZ-R2
40C to +85C
6-Lead Thin Shrink Small Outline Transistor Package (SC70)
250
KS-6
HEC
1
ADA4853-1AKSZ-R7
40C to +85C
6-Lead Thin Shrink Small Outline Transistor Package (SC70)
3,000
KS-6
HEC
1
ADA4853-1AKSZ-RL
40C to +85C
6-Lead Thin Shrink Small Outline Transistor Package (SC70)
10,000
KS-6
HEC
1
ADA4853-2YCPZ-R2
40C to +105C
16-Lead Lead Frame Chip Scale Package (LFCSP_VQ)
CP-16-3
1
ADA4853-2YCPZ-RL
40C to +105C
16-Lead Lead Frame Chip Scale Package (LFCSP_VQ)
CP-16-3
1
ADA4853-2YCPZ-R7
40C to +105C
16-Lead Lead Frame Chip Scale Package (LFCSP_VQ)
CP-16-3
1
1
Z = Pb-free part.
ADA4853-1/ADA4853-2
Rev. A | Page 16 of 16
NOTES
2006 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D05884-0-7/06(A)
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