_______________General Description
The MAX5154/MAX5155 low-power, serial, voltage-out-
put, dual 12-bit digital-to-analog converters (DACs)
consume only 500A from a single +5V (MAX5154) or
+3V (MAX5155) supply. These devices feature Rail-to-
Rail
output swing and are available in a space-saving
16-pin QSOP package. To maximize the dynamic
range, the DAC output amplifiers are configured with an
internal gain of +2V/V.
The 3-wire serial interface is SPITM/QSPITM and
MicrowireTM compatible. Each DAC has a double-
buffered input organized as an input register followed
by a DAC register, which allows the input and DAC reg-
isters to be updated independently or simultaneously
with a 16-bit serial word. Additional features include
programmable shutdown (2A), hardware-shutdown
lockout (PDL), a separate reference voltage input for
each DAC that accepts AC and DC signals, and an
active-low clear input (CL) that resets all registers and
DACs to zero. These devices provide a programmable
logic pin for added functionality, and a serial-data out-
put pin for daisy chaining.
________________________Applications
Industrial Process Control
Remote Industrial Controls
Digital Offset and Gain
Microprocessor-
Adjustment
Controlled Systems
Motion Control
Automatic Test
Equipment (ATE)
____________________________Features
o
12-Bit Dual DAC with Internal Gain of +2V/V
o
Rail-to-Rail Output Swing
o
12s Settling Time
o
Single-Supply Operation: +5V (MAX5154)
+3V (MAX5155)
o
Low Quiescent Current: 500A (normal operation)
2A (shutdown mode)
o
SPI/QSPI and Microwire Compatible
o
Available in Space-Saving 16-Pin QSOP Package
o
Power-On Reset Clears Registers and DACs
to Zero
o
Adjustable Output Offset
MAX5154/MAX5155
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
________________________________________________________________
Maxim Integrated Products
1
19-1316; Rev 1; 12/97
______________Ordering Information
Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.
SPI and QSPI are trademarks of Motorola, Inc.
Microwire is a trademark of National Semiconductor Corp.
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
For small orders, phone 408-737-7600 ext. 3468.
REFA
V
DD
AGND
DGND
PDL
CL
DOUT
16-BIT
SHIFT
REGISTER
SR
CONTROL
INPUT
REG A
INPUT
REG B
SCLK
UPO
REFB
DIN
CS
DAC B
DAC A
DAC
REG A
LOGIC
OUTPUT
DECODE
CONTROL
DAC
REG B
MAX5154
MAX5155
OUTB
R
R
R
R
OSB
OUTA
OSA
_________________________________________________________Functional Diagram
Ordering Information continued at end of data sheet.
Pin Configuration appears at end of data sheet.
INL
(LSB)
PIN-PACKAGE
TEMP. RANGE
PART
1/2
1
1/2
16 QSOP
16 Plastic DIP
16 Plastic DIP
0C to +70C
0C to +70C
0C to +70C
MAX5154ACEE
MAX5154BCPE
MAX5154
ACPE
1
16 QSOP
0C to +70C
MAX5154BCEE
MAX5154/MAX5155
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS--MAX5154
(V
DD
= +5V 10%, V
REFA
= V
REFB
= 2.048V, R
L
= 10k
, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are
at T
A
= +25C (OS_ tied to AGND for a gain of +2V/V).)
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
DD
to AGND............................................................-0.3V to +6V
V
DD
to DGND ...........................................................-0.3V to +6V
AGND to DGND ..................................................................0.3V
OSA, OSB to AGND........................(AGND - 4V) to (V
DD
+ 0.3V)
REF_, OUT_ to AGND.................................-0.3V to (V
DD
+ 0.3V)
Digital Inputs (SCLK, DIN, CS, CL, PDL)
to DGND............................................................(-0.3V to +6V)
Digital Outputs (DOUT, UPO)
to DGND ................................................-0.3V to (V
DD
+ 0.3V)
Maximum Current into Any Pin .........................................20mA
Continuous Power Dissipation (T
A
= +70C)
Plastic DIP (derate 10.5mW/C above +70C) ...........842mW
QSOP (derate 8.30mW/C above +70C) ...................667mW
CERDIP (derate 10.00mW/C above +70C) ..............800mW
Operating Temperature Ranges
MAX515_ _C_ E .................................................0C to +70C
MAX515_ _E_ E ..............................................-40C to +85C
MAX515_ _MJE.............................................-55C to +125C
Storage Temperature Range .............................-65C to +150C
Lead Temperature (soldering, 10sec) .............................+300C
(Note 1)
Input code = 0000 hex,
V
REF_
= (V
DD
- 1.4Vp-p) at 1kHz
Input code = 1FFE hex,
V
REF_
= 0.67Vp-p at 2.5V
DC
4.5V
V
DD
5.5V
Minimum with code 1554 hex
Normalized to 2.048V
Guaranteed monotonic
Code = 6
Normalized to 2.048V
dB
-82
Reference Feedthrough
kHz
300
Reference 3dB Bandwidth
k
14
20
R
REF
Reference Input Resistance
REF
Reference Input Range
V
0
V
DD
- 1.4
1
LSB
1/2
INL
Bits
12
Resolution
Integral Nonlinearity
PSRR
V
DD
Power-Supply
Rejection Ratio
V/V
20
260
ppm/C
4
Gain-Error Tempco
LSB
1
DNL
Differential Nonlinearity
mV
6
Vos
Offset Error
ppm/C
4
TCVos
Offset Tempco
LSB
-0.2
3
Gain Error
MAX5154A
MAX5154B
CONDITIONS
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
Input code = 1FFE hex,
V
REF_
= 1Vp-p at 1.25V
DC
, f = 25kHz
dB
75
SINAD
Signal-to-Noise plus
Distortion Ratio
CL, PDL, CS, DIN, SCLK
V
0.8
V
IL
Input Low Voltage
V
IN
= 0V to V
DD
A
0.001
1
I
IN
Input Leakage Current
pF
8
C
IN
Input Capacitance
mV
200
V
HYS
Input Hysteresis
CL, PDL, CS, DIN, SCLK
V
3
V
IH
Input High Voltage
STATIC PERFORMANCE
REFERENCE INPUT
MULTIPLYING-MODE PERFORMANCE
DIGITAL INPUTS
MAX5154/MAX5155
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS--MAX5154 (continued)
(V
DD
= +5V 10%, V
REFA
= V
REFB
= 2.048V, R
L
= 10k
, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are
at T
A
= +25C (OS_ tied to AGND for a gain of +2V/V).)
Note 1:
Accuracy is specified from code 6 to code 4095.
Note 2:
Accuracy is better than 1LSB for V
OUT
_ greater than 6mV and less than V
DD
- 50mV. Guaranteed by PSRR test at the end
points.
Note 3:
Digital inputs are set to either V
DD
or DGND, code = 0000 hex, R
L
=
.
Note 4:
SCLK minimum clock period includes the rise and fall times.
CS = V
DD
, f
DIN
= 100kHz, V
SCLK
= 5Vp-p
I
SOURCE
= 2mA
(Note 4)
(Note 3)
(Note 3)
ns
Rail-to-rail (Note 2)
To 1/2LSB of full-scale, V
STEP
= 4V
40
I
SINK
= 2mA
t
CL
SCLK Pulse Width Low
CONDITIONS
ns
40
t
CH
SCLK Pulse Width High
nV-s
5
Digital Crosstalk
nV-s
5
Digital Feedthrough
s
25
Time Required to Exit Shutdown
k
24
34
R
OS_
OSA or OSB Input Resistance
ns
100
t
CP
SCLK Clock Period
A
0
1
Reference Current in Shutdown
A
2
10
I
DD(SHDN)
Power-Supply Current
in Shutdown
mA
0.5
0.65
I
DD
Power-Supply Current
V
4.5
5.5
V
DD
Positive Supply Voltage
ns
40
t
DS
SDI Setup Time
ns
V
V
DD
- 0.5
V
OH
Output High Voltage
0
t
CSH
SCLK Rise to CS Rise
Hold Time
ns
40
t
CSS
CS Fall to SCLK Rise
Setup Time
C
LOAD
= 200pF
V
0 to V
DD
Output Voltage Swing
s
15
Output Settling Time
C
LOAD
= 200pF
ns
80
V
0.13
0.40
V
OL
Output Low Voltage
V/s
0.75
SR
Voltage Output Slew Rate
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
t
DO2
SCLK Fall to DOUT
Valid Propagation Delay
ns
80
t
DO1
SCLK Rise to DOUT
Valid Propagation Delay
ns
0
t
DH
SDI Hold Time
ns
100
t
CSW
CS Pulse Width High
ns
40
t
CS1
CS Rise to SCLK Rise Hold
ns
10
t
CS0
SCLK Rise to CS Fall Delay
DIGITAL OUTPUTS (DOUT, UPO)
DYNAMIC PERFORMANCE
POWER SUPPLIES
TIMING CHARACTERISTICS
Resolution
MAX5154/MAX5155
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS--MAX5155
(V
DD
= +2.7V to +3.6V, V
REFA
= V
REFB
= 1.25V, R
L
= 10k
, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values
are at T
A
= +25C (OS_ pins tied to AGND for a gain of +2V/V).)
nV-s
5
Digital Crosstalk
CS = V
DD
, f
DIN
= 100kHz, V
SCLK
= 3Vp-p
nV-s
5
Digital Feedthrough
s
25
Time Required for Valid
Operation after Shutdown
Input code = 1FFE hex,
V
REF_
= 1Vp-p at 1V
DC
, f = 15kHz
dB
73
SINAD
Signal-to-Noise plus
Distortion Ratio
(Note 5)
Input code = 0000 hex,
V
REF_
= (V
DD
- 1.4)Vp-p at 1kHz
Input code = 1FFE hex,
V
REF_
= 0.67Vp-p at 0.75V
DC
CL, PDL, CS, DIN, SCLK
2.7V
V
DD
3.6V
Minimum with code 1554 hex
Normalized to 1.25V
Guaranteed monotonic
Code = 10
Normalized to 1.25V
V
0.8
VIL
Input Low Voltage
V
IN
= 0V to V
DD
A
0
1
IIN
Input Leakage Current
pF
8
C
IN
Input Capacitance
mV
200
VHYS
Input Hysteresis
CL, PDL, CS, DIN, SCLK
V
dB
-82
Reference Feedthrough
kHz
300
Reference 3dB Bandwidth
2.2
VIH
Input High Voltage
k
14
20
R
REF
Reference Input Resistance
2
MAX5155A
MAX5155B
LSB
1
INL
Bits
12
Integral Nonlinearity
PSRR
V
DD
Power-Supply
Rejection Ratio
V/V
40
320
ppm/C
6.5
Gain-Error Tempco
LSB
1
DNL
Differential Nonlinearity
mV
6
Vos
Offset Error
ppm/C
6.5
TCVos
Offset Tempco
LSB
-0.2
4
Gain Error
Rail-to-rail (Note 6)
I
SOURCE
= 2mA
k
24
34
R
OS_
OSA or OSB Input Resistance
V
0 to V
DD
Output Voltage Swing
V
V
DD
- 0.5
VOH
Output High Voltage
CONDITIONS
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
REF
Reference Input Range
V
0
V
DD
- 1.4
DIGITAL OUTPUTS (DOUT, UPO)
I
SINK
= 2mA
V
0.13
0.4
VOL
Output Low Voltage
To 1/2LSB of full-scale, V
STEP
= 2.5V
s
15
Output Settling Time
V/s
0.75
SR
Voltage Output Slew Rate
REFERENCE INPUT (VREF)
MULTIPLYING-MODE PERFORMANCE
DIGITAL INPUTS
STATIC PERFORMANCE
DYNAMIC PERFORMANCE
MAX5154/MAX5155
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
_______________________________________________________________________________________
5
Note 5:
Accuracy is specified from code 10 to code 4095.
Note 6:
Accuracy is better than 1LSB for V
OUT
greater than 6mV and less than V
DD
- 80mV. Guaranteed by PSRR test at the end
points.
Note 7:
Digital inputs are set to either V
DD
or DGND, code = 0000 hex, R
L
=
.
ELECTRICAL CHARACTERISTICS--MAX5155 (continued)
(V
DD
= +2.7V to +3.6V, V
REFA
= V
REFB
= 1.25V, R
L
= 10k
, C
L
= 100pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values
are at T
A
= +25C (OS_ pins tied to AGND for a gain of +2V/V).)
C
LOAD
= 200pF
ns
120
t
DO2
SCLK Fall to DOUT Valid
Propagation Delay
ns
100
t
CSW
CS Pulse Width High
ns
40
t
CS1
CS Rise to SCLK Rise Hold
ns
10
t
CS0
SCLK Rise to CS Fall Delay
CONDITIONS
UNITS
(Note 7)
mA
0.45
0.6
I
DD
Power-Supply Current
(Note 7)
A
1
8
I
DD (SHDN)
Power-Supply Current
in Shutdown
A
MIN
TYP
MAX
0
1
Reference Current in Shutdown
(Note 4)
ns
100
SYMBOL
PARAMETER
t
CP
SCLK Clock Period
ns
40
t
CH
SCLK Pulse Width High
ns
40
t
CL
SCLK Pulse Width Low
ns
40
t
CSS
CS Fall to SCLK Rise
Setup Time
ns
0
t
CSH
SCLK Rise to CS Rise Hold Time
ns
50
t
DS
SDI Setup Time
ns
0
t
DH
SDI Hold Time
C
LOAD
= 200pF
ns
120
t
DO1
SCLK Rise to DOUT Valid
Propagation Delay
V
2.7
3.6
V
DD
Positive Supply Voltage
POWER SUPPLIES
TIMING CHARACTERISTICS
PDF 
ZIP