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LTC7541A

Improved

Industry Standard CMOS

12-Bit Multiplying DAC

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Improved Direct Replacement for AD7541A

and AD7541

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4-Quadrant Multiplication

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12-Bit End-Point Linearity:

Over Temperature

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All Grades Guaranteed Monotonic

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Maximum Gain Error:

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Single 5V to 15V Supply

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TTL and CMOS Logic Compatible

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Reduced Sensitivity to Op Amp Offset

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Low Power Consumption

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Virtually Latch-Up Proof

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Low Cost

The LTC

to-analog converter (DAC).

Laser-trimmed thin-film resistors provide excellent abso-

lute accuracy. Precision matched resistors and CMOS

circuitry result in remarkable stability with temperature

and supply variations.

The LTC7541A is a superior pin compatible replacement

for the industry standard AD7541A/AD7541. Improve-

ments include better typical accuracy and stability and

reduced sensitivity to output amplifier offset. The LTC7541A

is also very resistant to latch-up.

In addition to 2-quadrant and 4-quadrant multiplying

configurations, the LTC7541A performs well in digitally

programmable gain and noninverting voltage output ap-

plications. Low cost, improved performance and versatil-

ity make the LTC7541A the best choice for many new

designs and for upgrading existing systems. Parts are

available in 18-pin PDIP and 18-pin SO Wide packages.

FEATURES

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Motion Control Systems

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Microprocessor-Controlled Calibration

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Automatic Test Equipment

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Programmable Gain Amplifiers

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Digitally Controlled Filters

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

2-Quadrant Multiplying DAC Has Less Than

0.5LSB (Typ) Total Unadjusted Error

DIGITAL INPUT CODE

0

4095

7541A TA02

1024

2048

3072

1.0

0.5

0

–0.5

–1.0

512

1536

2560

3584

Integral Nonlinearity Over Temperature

LTC7541A

GND

3

4 TO 15

2

16

15V

17

18

1

OUT 1

33pF

7541 TA01

OUT 2

0.1

µF

LT

DIGITAL INPUTS