19-1476; Rev 0; 4/99
Lo w -P o w e r, S e ria l, 1 4 -Bit DACs
w it h Fo rc e /S e n s e Vo lt a g e Ou t p u t
/MAX5173
Ge n e ra l De s c rip t io n
Fe a t u re s
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.
♦ ±1 LSB INL
♦ 1µA Shutdown Current
♦ “Glitch Free” Output Voltage at Power-Up
♦ Single-Supply Operation: +5V (MAX5171)
+3V (MAX5173)
♦ Full-Scale Output Range:
+2.048V (MAX5173, V
+4.096V (MAX5171, V
♦ Rail-to-Rail® Output Amplifier
= +1.25V)
= +2.5V )
REF
REF
♦ Low THD (-80dB) in Multiplying Operation
♦ SPI/QSPI/MICROWIRE-Compatible 3-Wire
Serial Interface
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.
♦ Programmable Shutdown Mode and Power-Up
Reset
♦ Buffered Output Capable of Driving 5kΩ || 100pF
Loads
♦ User-Programmable Digital Output Pin Allows
Serial Control of External Components
♦ Pin-Compatible Upgrade to the 12-Bit
MAX5175/MAX5177
Ord e rin g In fo rm a t io n
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.
INL
(LSB)
PART
TEMP. RANGE PIN-PACKAGE
MAX5171AEEE
MAX5171BEEE
MAX5173AEEE
MAX5173BEEE
-40°C to +85°C 16 QSOP
-40°C to +85°C 16 QSOP
-40°C to +85°C 16 QSOP
-40°C to +85°C 16 QSOP
±1
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.
±2
±2
±4
P in Co n fig u ra t io n
TOP VIEW
Ap p lic a t io n s
Digitally Programmable 4–20mA Current Loops
Industrial Process Control
FB
OUT
RS
1
2
3
4
5
6
7
8
16 V
DD
15 N.C.
14 REF
13 AGND
Digital Offset and Gain Adjustment
Motion Control
MAX5171
MAX5173
PDL
CLR
CS
12
SHDN
Automatic Test Equipment (ATE)
Remote Industrial Controls
11 UPO
DIN
SCLK
10 DOUT
µP-Controlled Systems
9
DGND
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.
QSOP
Functional Diagram appears at end of data sheet.
________________________________________________________________ Maxim Integrated Products
1
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.
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