MAX5171 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – Low-Power, Serial, 14-Bit DACs with Force/Sense Voltage Output

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.
Features
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
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
INL
(LSB)
16 QSOP
±1
16 QSOP
±2
16 QSOP
±2
16 QSOP
±4
Pin Configuration
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.
TOP VIEW
FB 1
OUT 2
RS 3
PDL 4
CLR 5
CS 6
DIN 7
SCLK 8
MAX5171
MAX5173
16 V_DD
15 N.C.
14 REF
13 AGND
12 SHDN
11 UPO
10 DOUT
9 DGND
QSOP
Functional Diagram appears at end of data sheet.
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