MAX5230 Datasheet, PDF (1/18 Pages) Maxim Integrated Products – 3V/5V, 12-Bit, Serial Voltage-Output Dual DACs with Internal Reference

19-2332; Rev 1; 9/03
3V/5V, 12-Bit, Serial Voltage-Output Dual DACs
with Internal Reference
General Description
The MAX5230/MAX5231 low-power, dual 12-bit voltage-
output digital-to-analog converters (DACs) feature an
internal 3ppm/°C precision bandgap voltage reference
and precision output amplifiers. The MAX5231 operates
on a single 5V supply with an internal 2.5V reference and
features a 4.095V full-scale output range. The MAX5230
operates on a single 3V supply with an internal 1.25V ref-
erence and features a 2.0475V full-scale output range.
The MAX5231 consumes only 470µA while the MAX5230
consumes only 420µA of supply current. Both devices
feature low-power (2µA) software- and hardware-
enabled shutdown modes.
The MAX5230/MAX5231 feature a 13.5MHz SPI™-,
QSPI™-, and MICROWIRE™-compatible 3-wire serial
interface. An additional data output (DOUT) allows for
daisy-chaining and read back. Each DAC has a double-
buffered digital input. The MAX5230/MAX5231 feature
two software-selectable shutdown output impedances:
1kΩ or 200kΩ. A power-up reset feature sets DAC out-
puts at ground or at the midscale DAC code.
The MAX5230/MAX5231 are specified over the extended
temperature range (-40°C to +85°C) and are available in
16-pin QSOP packages.
Applications
Industrial Process Controls
Automatic Test Equipment
Digital Offset and Gain Adjustment
Motion Control
µP-Controlled Systems
Pin Configuration
TOP VIEW
OSA 1
OUTA 2
RSTV 3
LDAC 4
CLR 5
CS 6
DIN 7
SCLK 8
MAX5230
MAX5231
QSOP
16 OSB
15 OUTB
14 V_DD
13 AGND
12 REF
11 PDL
10 DOUT
9 DGND
Features
o Internal 3ppm/°C Precision Bandgap Reference
2.465V (MAX5231)
1.234V (MAX5230)
o 10ppm/°C (max) Full-Scale Output Range
4.095V (MAX5231)
2.0475V (MAX5230)
o Single-Supply Operation
5V (MAX5231)
3V (MAX5230)
o Low Supply Current
470µA (MAX5231)
420µA (MAX5230)
o 13.5MHz SPI/QSPI/MICROWIRE-Compatible,
3-Wire Serial Interface
o Pin-Programmable Power-Up Reset State to Zero
or Midscale Output Voltage
o Programmable Shutdown Modes with 1kΩ or
200kΩ Internal Output Loads
o Recalls Output State Prior to Shutdown or Reset
o Buffered Output Drives 5kΩ || 100pF Loads
o Space-Saving 16-Pin QSOP Package
Ordering Information
PART
MAX5230AEEE
MAX5230BEEE
MAX5231AEEE
MAX5231BEEE
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)
±0.5
±1
±0.5
±1
Functional Diagram appears at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor, Corp.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.