LTC1590

LTC1590 Dual Serial 12-Bit Multiplying DAC FEATURES s s s s s s s s DESCRIPTION The LTC®1590 is a dual, serial input 12-bit multiplying digital-to-analog converter (DAC). It includes two current output multiplying CMOS DACs and an easy SPI compatible serial interface with daisy-chain output. An asynchronous CLR pin sets both DACs to zero scale. Excellent accuracy, stability and versatility are combined with the smallest package available for a dual 12-bit multiplying DAC. Parts are available in 16-pin PDIP and narrow SO packages and are specified over the commercial and industrial temperature ranges. , LTC and LT are registered trademarks of Linear Technology Corporation. DNL and INL Over Temperature: ±0.5LSB Max Gain Error: ± 1LSB Max Low Supply Current: 10µA Max 4-Quadrant Multiplication Power-On Reset Asynchronous Clear Input Daisy-Chain 3-Wire Serial Interface 16-Pin Narrow SO and PDIP Packages U APPLICATIONS s s s s Process Control and Industrial Automation Software Controlled Gain Adjustment Digitally Controlled Filter and Power Supplies Automatic Test Equipment TYPICAL APPLICATION 1.0 Dual 12-Bit 2-Quadrant Multiplying DAC 5V 16 VCC 13 DIN 14 CLK µP 24-BIT SHIFT REG AND LATCH VREF B RFB B DAC B OUT2 B 4 11 CS/LD OUT1 B 3 INL (LSB) VIN A ±10V 9 VIN B ±10V 1 2 33pF 15V LT ®1112 Daisy-Chained Control Outputs – + VOUT B ±10V 8 VREF A RFB A DAC A OUT2 A 5 33pF OUT1 A 6 – + VOUT A ±10V 12 DOUT CLR 15 5V DGND 10 AGND 7 LTC1590 –15V LTC1590 TA01 INL (LSB) U ...