LTC7545A

LTC7545A Improved Industry Standard Parallel 12-Bit Multiplying DAC FEATURES s s s s s s s DESCRIPTIO Improved Direct Replacement for AD7545A and AD7545 DNL and INL Over Temperature: ± 0.5LSB Gain Error: ±1LSB Maximum 4-Quadrant Multiplication Single 5V or 15V Supply Low Power Consumption Low Cost The LTC ® 7545A is a 12-bit multiplying digital-to-analog converter (DAC) with a microprocessor compatible parallel 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. , LTC and LT are registered trademarks of Linear Technology Corporation. APPLICATI s s s s S Process Control and Industrial Automation Software Controlled Gain Adjustment Digitally Controlled Filter and Power Supplies Automatic Test Equipment TYPICAL APPLICATI 2-Quadrant Multiplying DAC Has Less Than 0.5LSB (Typ) Total Unadjusted Error VIN 5V 0.1µF Integral Nonlinearity Over Temperature 1.0 INTEGRAL NONLINEARITY (LSB) 18 19 20 RFB VDD VREF 1 OUT1 LTC7545A AGND 2 DGND 4–15 3 33pF 0.5 TA = 85°C 0 TA = –40°C –0.5 TA = 25°C – + LT ®1097 VOUT WR CS 17 16 754...