19-1478; Rev 1; 9/02
Low-Power, Serial, 14-Bit DACs
with Voltage Output
General Description
The MAX5170/MAX5172 low-power, serial, voltage-out-
put, 14-bit digital-to-analog converters (DACs) feature a
precision output amplifier in a space-saving 16-pin
QSOP package. The MAX5170 operates from a +5V
single supply and the MAX5172 operates from a +3V
single supply. Both devices draw only 280µA of supply
current, which reduces to 1µA in shutdown. In addition,
the programmable power-up reset feature allows for a
user-selectable power-up output voltage of either 0 or
midscale.
The 3-wire serial interface is compatible with SPI™,
QSPI™, and MICROWIRE™ standards. An input regis-
ter 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 MAX5170/MAX5172 incorporate a proprietary on-chip
circuit that keeps the output voltage virtually “glitch free,”
limiting the glitches to a few millivolts during power-up.
Both devices are available in 16-pin QSOP packages and
are specified for the extended (-40°C to +85°C) tempera-
ture range. For 100% pin-compatible DACS with internal
reference, see the 13-bit MAX5130/MAX5131 and the 12-
bit MAX5120/MAX5121 data sheets.
o
±1 LSB INL
o
1µA Shutdown Current
o
“Glitch Free” Output Voltage at Power-Up
o
Single-Supply Operation
+5V (MAX5170)
+3V (MAX5172)
o
Full-Scale Output Range
+2.048V (MAX5172, V
REF
= +1.25V)
+4.096V (MAX5170, 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 (0 or Midscale)
o
Buffered Output Capable of Driving 5kΩ || 100pF
Loads
o
User-Programmable Digital Output Pin Allows
Serial Control of External Components
o
Pin-Compatible Upgrade to the 12-Bit
MAX5174/MAX5176
Features
MAX5170/MAX5172
Ordering Information
PART
MAX5170AEEE
MAX5170BEEE
MAX5172AEEE
MAX5172BEEE
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
16 QSOP
16 QSOP
16 QSOP
16 QSOP
INL
(LSB)
±1
±2
±2
±4
Applications
Industrial Process Controls
Digital Offset and Gain Adjustment
Motion Control
Automatic Test Equipment (ATE)
Remote Industrial Controls
µP-Controlled Systems
Pin Configuration
TOP VIEW
OS 1
OUT 2
RS 3
PDL 4
CLR 5
CS 6
16 V
DD
15 N.C.
14 REF
MAX5170
MAX5172
13 AGND
12 SHDN
11 UPO
10 DOUT
9
DGND
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.
DIN 7
SCLK 8
QSOP
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Low-Power, Serial, 14-Bit DACs
with Voltage Output
MAX5170/MAX5172
ABSOLUTE MAXIMUM RATINGS
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
= +70°C)
16-Pin QSOP (derate 8mW/°C above +70°C)..............667mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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.
ELECTRICAL CHARACTERISTICS—MAX5170
(V
DD
= +5V ±10%, V
REF
= 2.5V, OS = AGND = DGND, R
L
= 5kΩ, C
L
= 100pF referenced to ground, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
STATIC PERFORMANCE
Resolution
Integral Nonlinearity (Note 1)
Differential Nonlinearity
Offset Error (Note 2)
Gain Error
Power-Supply Rejection Ratio
Output Noise Voltage
Output Thermal Noise Density
REFERENCE
Reference Input Range
Reference Input Resistance
Reference -3dB Bandwidth
Reference Feedthrough
Signal-to-Noise Plus Distortion
Ratio
DIGITAL INPUTS
Input High Voltage
Input Low Voltage
Input Hysteresis
Input Leakage Current
Input Capacitance
DIGITAL OUTPUTS
Output High Voltage
Output Low Voltage
V
OH
V
OL
I
SOURCE
= 2mA
I
SINK
= 2mA
V
DD
- 0.5
0.13
0.4
V
V
SINAD
V
REF
R
REF
V
REF
= 0.5Vp-p + 1.5V
DC
, slew-rate limited
V
REF
= 3.6Vp-p + 1.8V
DC
, f = 1kHz,
code = all 0s
V
REF
= 1.5 Vp-p + 1.5V
DC
, f = 10kHz,
code = 3FFF hex
3
0.8
200
V
IN
= 0 or V
DD
0.001
8
±1
0
18
350
-80
82
V
DD
- 1.4
V
kΩ
kHz
dB
dB
INL
DNL
V
OS
GE
PSRR
f = 100kHz
R
L
=
∞
R
L
= 5kΩ
-0.6
-1.6
10
1
80
MAX5170A
MAX5170B
14
±1
±2
±1
±10
±4
±8
120
Bits
LSB
LSB
mV
LSB
µV/V
LSBp-p
nV/√Hz
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MULTIPLYING-MODE PERFORMANCE
V
IH
V
IL
V
HYS
I
IN
C
IN
V
V
mV
µA
pF
2
_______________________________________________________________________________________
Low-Power, Serial, 14-Bit DACs
with Voltage Output
ELECTRICAL CHARACTERISTICS—MAX5170 (continued)
(V
DD
= +5V ±10%, V
REF
= 2.5V, OS = AGND = DGND, R
L
= 5kΩ, C
L
= 100pF referenced to ground, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
DYNAMIC PERFORMANCE
Voltage Output Slew Rate
Output Settling Time
Output Voltage Swing (Note 3)
OS Pin Input Resistance
Time Required to Exit Shutdown
Digital Feedthrough
POWER SUPPLIES
Positive Supply Voltage
Power-Supply Current (Note 4)
Shutdown Current (Note 4)
TIMING CHARACTERISTICS
SCLK Clock Period
SCLK Pulse Width High
SCLK Pulse Width Low
CS
Fall to SCLK Rise Setup
Time
SCLK Rise to
CS
Rise Hold
Time
DIN Setup Time
DIN Hold Time
SCLK Rise to DOUT Valid
Propagation Delay
SCLK Fall to DOUT Valid
Propagation Delay
SCLK Rise to
CS
Fall Delay
CS
Rise to SCLK Rise Hold Time
CS
Pulse Width High
t
CP
t
CH
t
CL
t
CSS
t
CSH
t
DS
t
DH
t
DO1
t
DO2
t
CS0
t
CS1
t
CSW
C
LOAD
= 200pF
C
LOAD
= 200pF
10
40
100
100
40
40
40
0
40
0
80
80
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
DD
I
DD
4.5
0.28
1
5.5
0.4
10
V
mA
µA
CS
= V
DD
, f
SCLK
= 100kHz, V
SCLK
= 5Vp-p
SR
To ±0.5LSB, from 10mV to full-scale
0
80
120
40
1
0.6
18
V
DD
V/µs
µs
V
kΩ
µs
nV-s
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX5170/MAX5172
_______________________________________________________________________________________
3
Low-Power, Serial, 14-Bit DACs
with Voltage Output
MAX5170/MAX5172
ELECTRICAL CHARACTERISTICS—MAX5172
(V
DD
= +2.7V to +3.6V, V
REF
= 1.25V, OS = AGND = DGND, R
L
= 5kΩ, C
L
= 100pF referenced to ground, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25°C).
PARAMETER
STATIC PERFORMANCE
Resolution
Integral Nonlinearity (Note 5)
Differential Nonlinearity
Offset Error (Note 2)
Gain Error
Power-Supply Rejection Ratio
Output Noise Voltage
Output Thermal Noise Density
REFERENCE
Reference Input Range
Reference Input Resistance
Reference -3dB Bandwidth
Reference Feedthrough
Signal-to-Noise Plus Distortion
Ratio
DIGITAL INPUT
Input High Voltage
Input Low Voltage
Input Hysteresis
Input Leakage Current
Input Capacitance
DIGITAL OUTPUT
Output High Voltage
Output Low Voltage
V
OH
V
OL
I
SOURCE
= 2mA
I
SINK
= 2mA
V
DD
- 0.5
0.13
0.4
V
V
V
IH
V
IL
V
HYS
I
IN
C
IN
V
IN
= 0 or V
DD
200
0.001
8
±1
2.2
0.8
V
V
mV
µA
pF
SINAD
V
REF
R
REF
V
REF
= 0.5Vp-p + 0.75V
DC
, slew-rate limited
V
REF
= 1.6Vp-p + 0.8V
DC
, f = 1kHz,
code = all 0s
V
REF
= 0.6Vp-p + 0.9V
DC
, f = 10kHz,
code = 3FFF hex
0
18
350
-80
78
V
DD
- 1.4
V
kΩ
kHz
dB
dB
INL
DNL
V
OS
GE
PSRR
f = 100kHz
R
L
=
∞
R
L
= 5kΩ
-0.6
-1.6
10
2
80
MAX5172A
MAX5172B
14
±2
±4
±1
±10
±4
±8
120
Bits
LSB
LSB
mV
LSB
µV/V
LSBp-p
nV/√Hz
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MULTIPLYING-MODE PERFORMANCE
4
_______________________________________________________________________________________
Low-Power, Serial, 14-Bit DACs
with Voltage Output
ELECTRICAL CHARACTERISTICS—MAX5172 (continued)
(V
DD
= 2.7V to 3.6V, V
REF
= 1.25V, OS = AGND = DGND, R
L
= 5kΩ, C
L
= 100pF referenced to ground, T
A
= T
MIN
to T
MAX
, unless
otherwise noted. Typical values are at T
A
= +25°C).
PARAMETER
DYNAMIC PERFORMANCE
Voltage Output Slew Rate
Output Settling Time
Output Voltage Swing (Note 3)
OS Pin Input Resistance
Time Required to Exit Shutdown
Digital Feedthrough
POWER SUPPLIES
Positive Supply Voltage
Power-Supply Current (Note 4)
Shutdown Current (Note 4)
TIMING CHARACTERISTICS
SCLK Clock Period
SCLK Pulse Width High
SCLK Pulse Width Low
t
CP
t
CH
t
CL
t
CSS
t
CSH
t
DS
t
DH
t
DO1
t
DO2
t
CS0
t
CS1
t
CSW
C
LOAD
= 200pF
C
LOAD
= 200pF
10
75
150
150
75
75
60
0
60
0
200
200
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
V
DD
I
DD
2.7
0.28
1
3.6
0.4
10
V
mA
µA
CS
= V
DD
, f
SCLK
= 100kHz, V
SCLK
= 3Vp-p
SR
To ±0.5LSB from 10mV to full-scale
0
80
120
40
1
0.6
18
V
DD
V/µs
µs
V
kΩ
µs
nV-s
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX5170/MAX5172
CSB
Fall to SCLK Rise Setup
Time
SCLK Rise to
CS
Rise Hold
Time
DIN Setup Time
DIN Hold Time
SCLK Rise to DOUT Valid
Propagation Delay
SCLK Fall to DOUT Valid
Propagation Delay
SCLK Rise to
CS
Fall Delay
CS
Rise to SCLK Rise Hold Time
CS
Pulse Width High
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
INL guaranteed between codes 40 and 16383.
Offset is measured at the code that comes closest to 10mV.
Accuracy is better than 1.0 LSB for V
OUT
= 10mV to V
DD
- 180mV. Guaranteed by PSR test on end points.
R
L
= open and digital inputs are either V
DD
or DGND.
INL guaranteed between codes 80 and 16383.
_______________________________________________________________________________________
5
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