ICM7373/7353/7333

Dual 12/10/8-Bit Voltage Output DACs

Serial Interface with Adjustable Output Gain

Rev. A1

ICmic reserves the right to change the specifications without prior notice.

1

IC MICROSYSTEMS

FEATURES

•

12/10/8-Bit Monotonic Dual DAC in 16 Lead

QSOP Package

•

Adjustable Output Gain

•

Rail-to-Rail Voltage Output

•

150 µA per DAC at 5V Supply

•

100 µA per DAC at 3V Supply

•

On Board Reference

•

Serial Interface with three-wire SPI/QSPI and

Microwire Interface Compatible

•

Serial Data Out for Daisy-Chaining

•

8 µS Full scale Settling Time

APPLICATION

•

Battery-Powered Applications

•

Industrial Process Control

•

Digital Gain and Offset Adjustment

OVERVIEW

The ICM7373, ICM7353 and ICM7333 are Dual 12-Bit, 10-

Bit and 8-Bit Rail-to-Rail voltage output DACs respectively,

with guaranteed monotonic behavior. These DACs are

available in 16 Lead QSOP package. They include

adjustable output gain for ease of use and flexibility. The

reference output is available on a separate pin and can be

used to drive external loads. The operating supply range is

2.7V to 5.5V.

The input interface is an easy to use three-wire SPI/QSPI

and Microwire compatible interface. The DAC has a

double buffered digital input. And there is a serial data

output port to allow daisy-chaining applications.

BLOCK DIAGRAM

INPUT AND DAC LATCH

INPUT CONTROL LOGIC, REGISTERS AND LATCHES

INPUT AND DAC LATCH

REFERENCE

VOA

VOB

FBA

FBB

SDI

SCK

CS

ICM7373/7353/7333

DAC B

DAC A

SDO

REFB

+

-

+

-

CLR

REFOUT

REFA