© 2002 Microchip Technology Inc.

DS21388B-page 1

TC1322

Features

• 12-Bit Digital-to-Analog Converter

• 2.7-5.5V Single Supply Operation

• Low Power: 350

µA Operation, 0.5µA Shutdown

• 8-Pin SOIC and 8-Pin MSOP Packages

Applications

• Programmable Voltage Sources

• Digital Controlled Amplifiers/Attenuators

• Process Monitoring and Control

Device Selection Table

General Description

The TC1322 is a serially accessible 12-bit voltage out-

put digital-to-analog converter (DAC). The DAC pro-

duces an output voltage that ranges from ground to an

externally supplied reference voltage. It operates from

a single power supply that can range from 2.7V to 5.5V,

making it ideal for a wide range of applications. Built

into the part is a Power-on Reset function that ensures

that the device starts at a known condition.

Communication with the TC1322 is accomplished via a

the TC1322 acting as a slave only device. The host can

enable the SHDN bit in the CONFIG register to activate

the Low Power Standby mode.

Package Type

Typical Application

Part

Number

Package

Temperature Range

TC1322EOA

8-Pin SOIC (Narrow)

-40°C to +85°C

TC1322EUA

8-Pin MSOP

-40°C to +85°C

GND

SDA

SCL

NC

DAC-OUT

1

8

27

36

45

TC1322

8-Pin MSOP and

8-Pin SOIC (Narrow)

Microcontroller

Serial Port

SDAT

SCLK

(1)

(8)

(3)

(2)

DAC

(5)

TC1322

+

–

12-Bit Digital-to-Analog Converter with Two-Wire Interface