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LTC7545A

Improved Industry Standard

Parallel 12-Bit Multiplying DAC

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FEATURE

DESCRIPTIO

The LTC

converter (DAC) with a microprocessor compatible paral-

lel input. It is a superior pin compatible replacement for the

industry standard AD7545A and AD7545. Improvements

include better accuracy, better stability over temperature

and supply variations and lower sensitivity to output

amplifier offset.

This very versatile DAC is useful for 2-quadrant and

4-quadrant multiplying, programmable gain and filtering

and single supply noninverting voltage output operation.

Parts are available in 20-pin PDIP and SO packages and

commercial and industrial temperature grades.

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Improved Direct Replacement for AD7545A

and AD7545

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DNL and INL Over Temperature:

±0.5LSB

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Gain Error:

±1LSB Maximum

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4-Quadrant Multiplication

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Single 5V or 15V Supply

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Low Power Consumption

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Low Cost

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Process Control and Industrial Automation

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Software Controlled Gain Adjustment

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Digitally Controlled Filter and Power Supplies

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Automatic Test Equipment

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APPLICATI

, LTC and LT are registered trademarks of Linear Technology Corporation.

APPLICATI

TYPICAL

2-Quadrant Multiplying DAC Has Less Than

0.5LSB (Typ) Total Unadjusted Error

LTC7545A

DGND

3

4–15

17

16

2

18

5V

WR

CS

19

20

1

OUT1

33pF

7545A TA01

AGND

0.1

µF

LT

DIGITAL INPUT CODE

0

4095

7545A TA02

1024

2048

3072

1.0

0.5

0

–0.5

–1.0

512

1536

2560

3584

Integral Nonlinearity Over Temperature