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General Description
The MAX5174/MAX5176 low-power, serial, voltage-out-
put, 12-bit digital-to-analog converters (DACs) feature a
precision output amplifier in a space-saving 16-pin
QSOP package. The MAX5174 operates from a single
+5V supply, and the MAX5176 operates from a single
+3V supply. Both devices draw only 280A of supply
current, which reduces to 1A in shutdown. In addition,
the programmable power-up reset feature allows for a
user-selectable output voltage state of either 0 or mid-
scale.
The 3-wire, digital, serial interface is compatible with
SPITM/QSPITM, and MICROWIRETM standards. An input
register followed by a DAC register provides a double-
buffered input, allowing the input and DAC registers to
be updated independently or simultaneously with a 16-
bit serial word. Additional features include software and
hardware shutdown, shutdown lockout, a hardware
clear pin, and a reference input capable of accepting
DC and offset AC signals. These devices provide a pro-
grammable digital output pin for added functionality
and a serial-data output pin for daisy-chaining. All logic
inputs are TTL/CMOS compatible and are internally
buffered with Schmitt triggers to allow direct interfacing
to optocouplers.
The MAX5174/MAX5176 incorporate a proprietary on-
chip circuit that keeps the output voltage virtually
"glitch free," limiting the glitches to a few millivolts dur-
ing power-up.
Both devices are available in 16-pin QSOP packages
and are specified for the extended (-40C to +85C)
temperature range. The MAX5170/MAX5172 are pin-
compatible 14-bit upgrades to the MAX5174/MAX5176.
For 100% pin-compatible DACs with internal reference,
see the 13-bit MAX5130/MAX5131 and the 12-bit
MAX5120/MAX5121 data sheets.
Applications
Industrial Process Controls
Digital Offset and Gain Adjustment
Motion Control
Automatic Test Equipment (ATE)
Remote Industrial Controls
P-Controlled Systems
Features
o
1 LSB INL
o
1A Shutdown Current
o
"Glitch Free" Output Voltage at Power-Up
o
Single-Supply Operation
+5V (MAX5174)
+3V (MAX5176)
o
Full-Scale Output Range
+2.048V (MAX5176, V
REF
= +1.25V)
+4.096V (MAX5174, V
REF
= +2.5V )
o
Rail-to-Rail
Output Amplifier
o
Adjustable Output Offset
o
Low THD (-80dB) in Multiplying Operation
o
SPI/QSPI/MICROWIRE-Compatible 3-Wire Serial
Interface
o
Programmable Shutdown Mode and Power-Up
Reset
o
Buffered Output Capable of Driving 5k
|| 100pF
Loads
o
User-Programmable Digital Output Pin Allows
Serial Control of External Components
o
14-Bit Upgrades Available (MAX5170/MAX5172)
MAX5174/MAX5176
Low-Power, Serial, 12-Bit DACs
with Voltage Output
________________________________________________________________
Maxim Integrated Products
1
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
OS
V
DD
N.C.
REF
AGND
PDL
UPO
DOUT
DGND
TOP VIEW
MAX5174
MAX5176
QSOP
OUT
RS
CS
SHDN
CLR
DIN
SCLK
19-1475; Rev 0; 4/99
PART
MAX5174
AEEE
MAX5174BEEE
MAX5176
AEEE
-40C to +85C
-40C to +85C
-40C to +85C
TEMP. RANGE
PIN-PACKAGE
16 QSOP
16 QSOP
16 QSOP
Pin Configuration
Ordering Information
MAX5176BEEE
-40C to +85C
16 QSOP
INL
(LSB)
1
2
2
4
Functional Diagram appears at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
MAX5174/MAX5176
Low-Power, Serial, 12-Bit DACs
with Voltage Output
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS--MAX5174
(V
DD
= +5V 10%, V
REF
= 2.5V, OS = AGND = DGND, R
L
= 5k
, C
L
= 100pF referenced to ground, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25C.)
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, DGND ............................................-0.3V to +6.0V
AGND to DGND.....................................................-0.3V to +0.3V
Digital Inputs to DGND..........................................-0.3V to +6.0V
DOUT, UPO to DGND ................................-0.3V to (V
DD
+ 0.3V)
OUT, REF to AGND ...................................-0.3V to (V
DD
+ 0.3V)
OS to AGND ...............................(AGND - 4.0V) to (V
DD
+ 0.3V)
Maximum Current into Any Pin............................................50mA
Continuous Power Dissipation (T
A
= +70C)
16-Pin QSOP (derate 8mW/C above +70C)..............667mW
Operating Temperature Range ...........................-40C to +85C
Storage Temperature Range .............................-65C to +150C
Lead Temperature (soldering, 10sec) .............................+300C
CONDITIONS
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
Bits
12
Resolution
MAX5174A
1
MAX5174B
LSB
2
INL
Integral Nonlinearity (Note 1)
LSB
1
DNL
Differential Nonlinearity
mV
10
V
OS
Offset Error (Note 2)
R
L
=
LSB
-0.6
4
GE
Gain Error
R
L
= 5k
-1.6
8
V/V
10
120
PSRR
Power-Supply Rejection Ratio
f = 100kHz
LSBp-p
1
Output Noise Voltage
nV/
Hz
80
Output Thermal Noise Density
V
0
V
DD
- 1.4
V
REF
Reference Input Range
k
18
R
REF
Reference Input Resistance
V
REF
= 0.5Vp-p + 1.5V
DC
, slew-rate limited
kHz
350
Reference -3dB Bandwidth
V
REF
= 2Vp-p + 1.5V
DC
, f = 10kHz,
code = FFF hex
dB
82
SINAD
Signal-to-Noise Plus Distortion
Ratio
V
3
V
IH
Input High Voltage
V
0.8
V
IL
Input Low Voltage
mV
200
V
HYS
Input Hysteresis
V
IN
= 0 or V
DD
A
0.001
1
I
IN
Input Leakage Current
pF
8
C
IN
Input Capacitance
I
SOURCE
= 2mA
V
V
DD
- 0.5
V
OH
Output High Voltage
I
SINK
= 2mA
V
0.13
0.4
V
OL
Output Low Voltage
V
REF
= 3.6Vp-p + 1.8V
DC
, f = 1kHz,
code = all 0s
dB
-80
Reference Feedthrough
STATIC PERFORMANCE
REFERENCE
MULTIPLYING-MODE PERFORMANCE
DIGITAL INPUTS
DIGITAL OUTPUTS
MAX5174/MAX5176
Low-Power, Serial, 12-Bit DACs
with Voltage Output
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS--MAX5174 (continued)
(V
DD
= +5V 10%, V
REF
= 2.5V, OS = AGND = DGND, R
L
= 5k
, C
L
= 100pF referenced to ground, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25C.)
CONDITIONS
V/s
0.6
SR
Voltage Output Slew Rate
V
0
V
DD
Output Voltage Swing (Note 3)
k
80
120
OS Pin Input Resistance
s
40
Time Required to Exit Shutdown
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
CS = V
DD
, f
SCLK
= 100kHz, V
SCLK
= 5Vp-p
nV-s
1
Digital Feedthrough
V
4.5
5.5
V
DD
Positive Supply Voltage
mA
0.35
0.4
I
DD
Power-Supply Current (Note 4)
A
1
10
Shutdown Current (Note 4)
ns
100
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
40
t
DS
SDI Setup Time
ns
0
t
DH
SDI Hold Time
C
LOAD
= 200pF
ns
80
t
DO1
SCLK Rise to DOUT Valid
Propagation Delay
C
LOAD
= 200pF
ns
80
t
DO2
SCLK Fall to DOUT Valid
Propagation Delay
ns
10
t
CS0
SCLK Rise to CS Fall Delay
ns
100
t
CSW
CS Pulse Width High
ns
0
t
CSH
SCLK Rise to CS Rise Hold
Time
ns
40
t
CS1
CS Rise to SCLK Rise Hold Time
To 0.5LSB, from 10mV to full-scale
s
18
Output Settling Time
DYNAMIC PERFORMANCE
POWER SUPPLIES
TIMING CHARACTERISTICS
MAX5174/MAX5176
Low-Power, Serial, 12-Bit DACs
with Voltage Output
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS--MAX5176
(V
DD
= +2.7V to +3.6V, V
REF
= 1.25V, OS = AGND = DGND, R
L
= 5k
, C
L
= 100pF referenced to ground, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25C).
Bits
12
Resolution
MAX5176A
2
V
REF
= 1.6Vp-p + 0.8V
DC
, f = 1kHz,
code = all 0s
dB
MAX5176B
LSB
4
INL
Integral Nonlinearity (Note 5)
LSB
1
DNL
Differential Nonlinearity
mV
10
CONDITIONS
V
OS
Offset Error (Note 2)
R
L
=
LSB
-0.6
4
GE
Gain Error
R
L
= 5k
-1.6
8
-80
V/V
10
120
PSRR
Power-Supply Rejection Ratio
f = 100kHz
LSBp-p
2
Output Noise Voltage
nV/
Hz
80
Output Thermal Noise Density
V
0
V
DD
- 1.4
V
REF
Reference Input Range
k
18
R
REF
Reference Input Resistance
V
REF
= 0.5Vp-p + 0.75V
DC
, slew-rate limited
kHz
350
Reference -3dB Bandwidth
V
REF
= 0.6Vp-p + 0.9V
DC
, f = 10kHz,
code = FFF hex
dB
78
SINAD
Signal-to-Noise Plus Distortion
Ratio
Reference Feedthrough
V
2.2
V
IH
Input High Voltage
V
0.8
V
IL
Input Low Voltage
mV
200
V
HYS
Input Hysteresis
V
IN
= 0 or V
DD
A
0.001
1
I
IN
Input Leakage Current
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
pF
8
C
IN
Input Capacitance
I
SOURCE
= 2mA
V
V
DD
- 0.5
V
OH
Output High Voltage
I
SINK
= 2mA
V
0.13
0.4
V
OL
Output Low Voltage
STATIC PERFORMANCE
REFERENCE
MULTIPLYING-MODE PERFORMANCE
DIGITAL INPUT
DIGITAL OUTPUT
MAX5174/MAX5176
Low-Power, Serial, 12-Bit DACs
with Voltage Output
_______________________________________________________________________________________
5
Note 1:
INL guaranteed between codes 10 and 4095.
Note 2:
Offset is measured at the code that comes closest to 10mV.
Note 3:
Accuracy is better than 1 LSB for V
OUT
= 10mV to V
DD
- 180mV. Guaranteed by PSR test on end points.
Note 4:
R
L
= open and digital inputs are either V
DD
or DGND.
Note 5:
INL guaranteed between codes 20 and 4095.
ELECTRICAL CHARACTERISTICS--MAX5176 (continued)
(V
DD
= +2.7V to +3.6V, V
REF
= 1.25V, OS = AGND = DGND, R
L
= 5k
, C
L
= 100pF referenced to ground, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25C).
Power-Supply Current (Note 4)
I
DD
0.35
0.4
mA
Positive Supply Voltage
V
DD
2.7
3.6
V
Digital Feedthrough
1
nV-s
CS = V
DD
, DIN = 50kHz; f
SCLK
= 100kHz,
V
SCLK
= 3Vp-p
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Time Required to Exit Shutdown
40
s
OS Pin Input Resistance
80
120
k
Output Voltage Swing (Note 3)
0 V
DD
V
Voltage Output Slew Rate
SR
0.6
V/s
CS Pulse Width High
t
CSW
150
ns
SCLK Rise to CS Fall Delay
t
CS0
10
ns
Output Settling Time
18
s
To 0.5LSB, from 10mV to full-scale
SCLK Fall to DOUT Valid
Propagation Delay
t
DO2
200
ns
C
LOAD
= 200pF
CS Rise to SCLK Rise Hold Time
t
CS1
75
ns
SCLK Rise to DOUT Valid
Propagation Delay
t
DO1
200
ns
C
LOAD
= 200pF
SDI Hold Time
t
DH
0
ns
SDI Setup Time
t
DS
60
ns
SCLK Rise to CS Rise Hold Time
t
CSH
0
ns
CSB
Fall to SCLK Rise Setup
Time
t
CSS
60
ns
SCLK Pulse Width Low
t
CL
CONDITIONS
75
ns
SCLK Pulse Width High
t
CH
75
ns
SCLK Clock Period
t
CP
150
ns
Shutdown Current (Note 4)
1
10
A
DYNAMIC PERFORMANCE
POWER SUPPLIES
TIMING CHARACTERISTICS
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