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DIN

SCLK

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D, JG PACKAGE

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FK PACKAGE

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DESCRIPTION

TLV5638

SLAS225C – JUNE 1999 – REVISED JANUARY 2004

2.7-V TO 5.5-V LOW-POWER DUAL 12-BIT DIGITAL-TO-ANALOG CONVERTER WITH

INTERNAL REFERENCE AND POWER DOWN

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Dual 12-Bit Voltage Output DAC

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Programmable Internal Reference

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Programmable Settling Time:

– 1 µs in Fast Mode,

– 3.5 µs in Slow Mode

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Compatible With TMS320 and SPI™ Serial

Ports

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Differential Nonlinearity <0.5 LSB Typ

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Monotonic Over Temperature

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Digital Servo Control Loops

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Digital Offset and Gain Adjustment

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Industrial Process Control

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Machine and Motion Control Devices

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Mass Storage Devices

The TLV5638 is a dual 12-bit voltage output DAC with a flexible 3-wire serial interface. The serial interface allows

glueless interface to TMS320, SPI™, QSPI™, and Microwire™ serial ports. It is programmed with a 16-bit serial

string containing 4 control and 12 data bits.

The resistor string output voltage is buffered by a x2 gain rail-to-rail output buffer. The buffer features a Class AB

output stage to improve stability and reduce settling time. The programmable settling time of the DAC allows the

designer to optimize speed vs power dissipation. With its on-chip programmable precision voltage reference, the

TLV5638 simplifies overall system design.

Because of its ability to source up to 1 mA, the reference can also be used as a system reference. Implemented

with a CMOS process, the device is designed for single supply operation from 2.7 V to 5.5 V. It is available in an

8-pin SOIC package to reduce board space in standard commercial, industrial, and automotive temperature

ranges. It is also available in JG and FK packages in the military temperature range.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

SPI, QSPI are trademarks of Motorola, Inc.

Microwire is a trademark of National Semiconductor Corporation.

PRODUCTION DATA information is current as of publication date.

Copyright © 1999–2004, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.