MAX5234-MAX5235 Datasheet, PDF (1/19 Pages) Maxim Integrated Products – Single-Supply 3V/5V, Voltage-Output, Dual, Precision 12-Bit DACs

19-2330; Rev 0; 1/02
Single-Supply 3V/5V, Voltage-Output, Dual,
Precision 12-Bit DACs
General Description
The MAX5234/MAX5235 precision, dual-output, 12-bit
digital-to-analog converters (DACs) consume only 360µA
from a single 5V (MAX5235) or 325µA from a single 3V
(MAX5234) supply. These devices feature output buffers
that swing Rail-to-Rail^®. The internal gain amplifiers maxi-
mize the dynamic range of the DAC output.
The MAX5234/MAX5235 feature a 13.5MHz 3-wire seri-
al interface compatible with SPI™, QSPI™, and
MICROWIRE™. Each DAC input is organized as an
input register followed by a DAC register. A 16-bit shift
register loads data into the input registers. Input regis-
ters update the DAC registers independently or simulta-
neously. In addition, programmable control bits allow
power-down with 1kΩ or 200kΩ internal loads.
The MAX5234/MAX5235 are fully specified over the
extended industrial temperature range (-40°C to +85°C)
and are available in space-saving 10-pin µMAX packages.
Applications
Industrial Process Controls
Automatic Test Equipment
Digital Offset and Gain Adjustment
Motion Control
µP-Controlled Systems
Features
o Guaranteed 1/2LSB INL (max)
o Low Supply Current
325µA (Normal Operation)
0.4µA (Full Power-Down Mode)
o Single-Supply Operation
3V (MAX5234)
5V (MAX5235)
o Space-Saving 10-Pin µMAX Package
o Output Buffers Swing Rail-to-Rail
o Power-On Reset Clears Registers and DACs
to Zero
o Programmable Shutdown Modes with 1kΩ or
200kΩ Internal Loads
o Resets to Zero
o 13.5MHz SPI/QSPI/MICROWIRE-Compatible,
3-Wire Serial Interface
o Buffered Output Drives 5kΩ || 100pF
PART
MAX5234AEUB
MAX5234BEUB
MAX5235AEUB
MAX5235BEUB
Ordering Information
TEMP
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
10 µMAX
10 µMAX
10 µMAX
10 µMAX
INL
(LSB)
±0.5
±1
±0.5
±1
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Pin Configuration
TOP VIEW
OUTA 1
REFA 2
GND 3
LDAC 4
CS 5
MAX5234
MAX5235
µMAX
10 OUTB
9 REFB
8 V_DD
7 DIN
6 SCLK
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