MAX5712 Datasheet, PDF (1/9 Pages) Maxim Integrated Products – 12-Bit, Low-Power, Rail-to-Rail Voltage-Output Serial DAC in SOT23

19-2126; Rev 1; 10/01
12-Bit, Low-Power, Rail-to-Rail
Voltage-Output Serial DAC in SOT23
General Description
The MAX5712 is a small footprint, low-power, 12-bit digi-
tal-to-analog converter (DAC) that operates from a single
+2.7V to +5.5V supply. The MAX5712 on-chip precision
output amplifier provides Rail-to-Rail^® output swing.
Drawing only 85µA supply current at +3V, the MAX5712
is ideally suited for portable battery-operated equipment.
The MAX5712 utilizes a 3-wire serial-interface that is com-
patible with SPI™/QSPI™/MICROWIRE™ and DSP-inter-
face standards. All logic inputs are CMOS-logic
compatible and buffered with Schmitt triggers to allow
direct interfacing to optocouplers. The MAX5712 incorpo-
rates a power-on reset (POR) circuit that ensures the DAC
begins in a zero-volt-state upon power-up. A power-down
mode that reduces current consumption to 0.3µA may be
initiated through a software command.
The MAX5712 is available in a small 6-pin SOT23 pack-
age. For dual and quad 12-bit versions, see the MAX5722
and MAX5742 data sheets. For single, dual, and quad
10-bit versions, see the MAX5711, MAX5721 and
MAX5741 data sheets. The MAX5712 is specified over
the automotive temperature range of -40°C to +125°C.
Applications
Automatic Tuning
Gain and Offset Adjustment
Power Amplifier Control
Process Control I/O Boards
Battery-Powered Equipment
VCO Control
Features
o Wide -40°C to +125°C Operating Temperature
Range
o Low 85µA Supply Current
o Ultra Low 0.3µA Power-Down Supply Current
o Single +2.7V to +5.5V Supply Voltage
o Fast 20MHz 3-Wire SPI/QSPI/MICROWIRE and
DSP-Compatible Serial Interface
o Schmitt-Triggered Inputs for Direct Interfacing to
Optocouplers
o Rail-to-Rail Output Buffer
o Tiny 6-Pin SOT23 Package
o Power-On Reset to 0V
o Three Software-Selectable Power-Down Output
Impedances (100kΩ, 1kΩ, Hi-Z)
Ordering Information
PART
MAX5712EUT
MAX5712AUT
TEMP RANGE
-40°C to +85°C
-40°C to +125°C
PIN-
PACKAGE
6 SOT23
6 SOT23
TOP
MARK
ABCQ
AAUD
Pin Configuration appears at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor, Corp.
Functional Diagram
V_DD GND
DAC
REGISTER
INPUT
CONTROL
LOGIC
REF+ REF-
12-BIT
DAC
OUTPUT
BUFFER
POWER-DOWN
CONTROL
LOGIC
MAX5712
OUT
100kΩ 1kΩ
CS
SCLK
DIN
POWER-ON
RESET
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