LTC1458L Datasheet | Linear Technology

LTC1458/LTC1458L Quad 12-Bit Rail-to-Rail Micropower DACs Features s s s s s DESCRIPTION The LTC®1458/LTC1458L are plete single supply, quad rail-to-rail voltage output, 12-bit digital-to-analog converters (DACs) in SO-28 and SSOP-28 packages. They include an output buffer amplifier with variable gain (× 1 or × 2) and an easy-to-use 3-wire cascadable serial interface. The LTC1458 has an onboard reference of 2.048V and a full-scale output of 4.095V in a × 2 gain configuration. It operates from a single 4.5V to 5.5V supply dissipating only 5.5m W (ICC = 1.1m A typ). The LTC1458L has an onboard 1.22V reference and a fullscale output of 2.5V in a × 2 gain configuration. It operates from a single supply of 2.7V to 5.5V dissipating 2.4m W. Excellent DNL, low supply current and a wide range of built-in functions allow these parts to be used in a host of applications when flexibility, power and single supply operation are important. , LTC and LT are registered trademarks of Linear Technology Corporation. s s s s s s 12-Bit Resolution Buffered True Rail-to-Rail Voltage Output 5V Operation, ICC: 1.1m A Typ (LTC1458) 3V Operation, ICC: 800µA Typ (LTC1458L) Built-In Reference: 2.048V (LTC1458) 1.220V (LTC1458L) CLR Pin Power-On Reset SSOP-28 Package 3-Wire Cascadable Serial Interface Maximum DNL Error: 0.5LSB Low Cost U APPLICATIONS s s s s Digital Calibration Industrial Process Control Automatic Test Equipment Low Power Systems TYPICAL APPLICATION Daisy-Chained Control Outputs Functional Block Diagram: Quad 12-Bit Rail-to-Rail DAC 2.048V (LTC1458) 1.22V (LTC1458L) REFOUT REFHI C FROM µP 5V (LTC1458) 3V TO 5V (LTC1458L) DIN VCC REFHI B 0.5 0.4 0.3 0.2 CS/LD CLK DAC C 48-BIT SHIFT REGISTER AND DAC REGISTER DAC B DNL (LSB) VOUT C X1/X2 C REFLO C REFHI D VOUT D X1/X2 D REFLO D VOUT B X1/X2 B REFLO B REFHI A DAC D DAC A VOUT A X1/X2 A REFLO A DOUT 1458 BD01 Differential Nonlinearity vs Input Code 0.1 0 - 0.1 - 0.2 - 0.3 - 0.4 - 0.5 0 512 1024 1536 2048...