Rainbow Electronics MAX5531 - Manual

General Description
The MAX5530/MAX5531 are single, 12-bit, ultra-low-
power, voltage-output, digital-to-analog converters
(DACs) offering Rail-to-Rail
® buffered voltage outputs.
The DACs operate from a 1.8V to 5.5V supply and con-
sume less than 6µA, making them desirable for low-
power and low-voltage applications. A shutdown mode
reduces overall current, including the reference input
current, to just 0.18µA. The MAX5530/MAX5531 use a
3-wire serial interface that is compatible with SPI™,
QSPI™, and MICROWIRE™.
At power-up, the MAX5530/MAX5531 outputs are driven
to zero scale, providing additional safety for applications
that drive valves or for other transducers that must be off
during power-up. The zero-scale outputs enable glitch-
free power-up.
The MAX5530 accepts an external reference input. The
MAX5531 contains an internal reference and provides
an external reference output. Both devices have force-
sense-configured output buffers.
The MAX5530/MAX5531 are available in a 4mm x 4mm x
0.8mm, 12-pin, thin QFN package and are guaranteed
over the extended -40°C to +85°C temperature range.
For 10-bit compatible devices, refer to the MAX5520/
MAX5521 data sheet. For 8-bit compatible devices,
refer to the MAX5510/MAX5511 data sheet.
Applications
Portable Battery-Powered Devices
Instrumentation
Automatic Trimming and Calibration in Factory
or Field
Programmable Voltage and Current Sources
Industrial Process Control and Remote
Industrial Devices
Remote Data Conversion and Monitoring
Chemical Sensor Cell Bias for Gas Monitors
Programmable Liquid Crystal Display (LCD) Bias
Features
♦ Ultra-Low 6µA Supply Current
♦ Shutdown Mode Reduces Supply Current to
0.18µA (max)
♦ Single +1.8V to +5.5V Supply
♦ Small 4mm x 4mm x 0.8mm Thin QFN Package
♦ Flexible Force-Sense-Configured Rail-to-Rail
Output Buffers
♦ Internal Reference Sources 8mA of Current
(MAX5531)
♦ Fast 16MHz 3-Wire SPI-/QSPI-/MICROWIRE-
Compatible Serial Interface
♦ TTL- and CMOS-Compatible Digital Inputs with
Hysteresis
♦ Glitch-Free Outputs During Power-Up
MAX5530/MAX5531
Ultra-Low-Power, 12-Bit,
Voltage-Output DACs
________________________________________________________________ Maxim Integrated Products 1
12
FB
11
N.C.
10
OUT
4 5
N.C.
6
N.C.
1
2 SCLK
3
9
8
7 DIN
GND
V DD
N.C.
MAX5530
MAX5531
CS
REFIN (MAX5530)
REFOUT(MAX5531)
THIN QFN
TOP VIEW
Pin Configuration
Ordering Information
Selector Guide
19-3063; Rev 0; 1/04
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.
PART REFERENCE TOP MARK
MAX5530ETC External AACS
MAX5531ETC Internal AACT
PART TEMP RANGE PIN-PACKAGE
MAX5530 ETC -40°C to +85°C 12 Thin QFN-EP*
MAX5531 ETC -40°C to +85°C 12 Thin QFN-EP*
Rail-to-Rail is a registered trademark of Nippon Motorola, Inc.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp
*EP = Exposed paddle (internally connected to GND).