19-1476; Rev 0; 4/99
Low-Power, Serial, 14-Bit DACs
with Force/Sense Voltage Output
General Description
The MAX5171/MAX5173 low-power, serial, voltage-output,
14-bit digital-to-analog converters (DACs) feature a preci-
sion output amplifier in a space-saving 16-pin QSOP
package. The MAX5171 operates from a +5V single sup-
ply, and the MAX5173 operates from a +3V single supply.
The output amplifier’s inverting input is available to allow
specific gain configurations, remote sensing, and high
output current capability. This makes the MAX5171/
MAX5173 ideal for a wide range of applications, including
industrial process control. Both devices draw only 260µA
of supply current, which reduces to 1µA in shutdown
mode. In addition, the programmable power-up reset fea-
ture allows for a user-selectable output voltage of either 0
or midscale.
The 3-wire serial interface is compatible with SPI™,
QSPI™, and MICROWIRE™ 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 shut-
down, shutdown lockout, a hardware clear pin, and a ref-
erence input capable of accepting DC and offset AC
signals. These devices provide a programmable 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 trig-
gers to allow direct interfacing to optocouplers.
The MAX5171/MAX5173 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. The MAX5171/MAX5173 are pin-compatible
upgrades to the 12-bit MAX5175/MAX5177. For 100% pin-
compatible DACs with an internal reference, see the 13-bit
MAX5132/MAX5133 and the 12-bit MAX5122/MAX5123
data sheets.
o
±1 LSB INL
o
1µA Shutdown Current
o
“Glitch Free” Output Voltage at Power-Up
o
Single-Supply Operation: +5V (MAX5171)
+3V (MAX5173)
o
Full-Scale Output Range:
+2.048V (MAX5173, V
REF
= +1.25V)
+4.096V (MAX5171, V
REF
= +2.5V )
o
Rail-to-Rail
®
Output Amplifier
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 5kΩ || 100pF
Loads
o
User-Programmable Digital Output Pin Allows
Serial Control of External Components
o
Pin-Compatible Upgrade to the 12-Bit
MAX5175/MAX5177
Features
MAX5171/MAX5173
Ordering Information
PART
MAX5171AEEE
MAX5171BEEE
MAX5173AEEE
MAX5173BEEE
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
Pin Configuration
TOP VIEW
FB 1
OUT 2
RS 3
PDL 4
CLR 5
CS 6
DIN 7
SCLK 8
16 V
DD
15 N.C.
14 REF
Applications
Digitally Programmable 4–20mA Current Loops
Industrial Process Control
Digital Offset and Gain Adjustment
Motion Control
Automatic Test Equipment (ATE)
Remote Industrial Controls
µP-Controlled Systems
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.
MAX5171
MAX5173
13 AGND
12 SHDN
11 UPO
10 DOUT
9
DGND
QSOP
Functional Diagram appears at end of data sheet.
1
________________________________________________________________
Maxim Integrated Products
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Low-Power, Serial, 14-Bit DACs
with Force/Sense Voltage Output
MAX5171/MAX5173
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)
FB, OUT, REF to AGND .............................-0.3V 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, 10sec) .............................+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—MAX5171
(V
DD
= +5.0V ±10%, V
REF
= +2.5V, AGND = DGND, FB = OUT, 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 + 2.5V
DC
, slew-rate limited
V
REF
= 3.6Vp-p + 1.8V
DC
, f = 1kHz,
code = all 0s
V
REF
= 1.4Vp-p + 2.5V
DC
, f = 10kHz,
code = 3FFF hex
3
0.8
200
V
IN
= 0 or V
DD
0.001
8
±1
0
18
350
-84
84
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
50
MAX5171A
MAX5171B
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 Force/Sense Voltage Output
ELECTRICAL CHARACTERISTICS—MAX5171 (continued)
(V
DD
= +5V ±10%, V
REF
= +2.5V, AGND = DGND, FB = OUT, 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)
Current into FB
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
SDI Setup Time
SDI 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
0.26
1
5.5
0.35
10
V
mA
µA
CS
= V
DD
; f
SCLK
= 100kHz, V
SCLK
= 5Vp-p
SR
To ±0.5LSB, from 10mV to full scale
0
-0.1
0
40
1
0.6
12
V
DD
0.1
V/µs
µs
V
µA
µs
nV-s
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX5171/MAX5173
_______________________________________________________________________________________
3
Low-Power, Serial, 14-Bit DACs
with Force/Sense Voltage Output
MAX5171/MAX5173
ELECTRICAL CHARACTERISTICS—MAX5173
(V
DD
= +2.7V to +3.6V, V
REF
= 1.25V, AGND = DGND, FB = OUT, 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 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
V
IH
V
IL
V
HYS
I
IN
C
IN
V
IN
= 0 or V
DD
-1
200
0.001
8
±1
2.2
0.8
V
V
mV
µA
pF
SINAD
V
REF
R
REF
V
REF
= 0.5Vp-p + 1.25V
DC
, slew-rate limited
V
REF
= 1.6Vp-p + 0.8V
DC
, f = 1kHz,
code = all 0s
V
REF
= 0.9Vp-p + 1.25V
DC
, f = 10kHz,
code = 3 FFF Hex
0
18
350
-84
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
50
MAX5173A
MAX5173B
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 Force/Sense Voltage Output
ELECTRICAL CHARACTERISTICS—MAX5173 (continued)
(V
DD
= +2.7V to +3.6V, V
REF
= 1.25V, AGND = DGND, FB = OUT, 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)
Current into FB
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
SDI Setup Time
SDI 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:
t
CP
t
CH
t
CL
t
CSS
t
CSS
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
0.26
1
3.6
0.35
10
V
mA
µA
CS
= V
DD
, DIN = 50kHz; f
SCLK
= 100kHz,
V
SCLK
= 3Vp-p
SR
To ±0.5LSB, from 10mV to full-scale
0
-0.1
0
40
1
0.6
12
V
DD
0.1
V/µs
µs
V
µA
µs
nV-s
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX5171/MAX5173
INL guaranteed between codes 64 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 128 and 16383.
_______________________________________________________________________________________
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