DA9188.002

23 February 2005

1 (10)

MAS9188

12 × 8-Bit D to A Converter

• 3-Pin Serial Data Interface

• Low Voltage Output Buffer

• Replaces 12 Potentiometers

• Individually Programmable

Outputs

• Fully Operational Down to 1.2 V

DESCRIPTION

MAS9188 is 12-channel 8-bit DAC, designed

primarily for trimmer replacement. The device is

controlled by a simple 3-line input.

The DAC is selected with the four first bits in the

serial input data (SDI-pin) and the DAC output value

is set according to the last 8 bits in the serial input

data.

FEATURES

APPLICATIONS

• Twelve 8-Bit DACs on a Single Monolithic Chip

• Voltage Level Output

• TSSOP-20 Package

• Single, Low +1.2 V Supply

• Power-On Reset

• Functionally

and

Pin

Compatible

with

AD8802/AD8804

• High Resolution Monitors

• Automatic Gain Control

• Trimmer Replacement

• Portable and Battery-Operated Equipment

BLOCK DIAGRAM

8-BIT DAC

8-BIT DAC

8-BIT DAC

8-BIT DAC

8-BIT DAC

8-BIT DAC

8-BIT DAC

O8

8-BIT DAC

O7

O6

O5

O4

O3

O2

O1

VREFHVREFL

8-BIT DAC

8-BIT DAC

8-BIT DAC

8-BIT DAC

O12

O11

O10

O9

CLK

SDI

XCS

VDD

GND

12-bit

Shift

Register

Address

Decoder

8-bit data