LINEAR(凌特) LTC1446LCS8 1446L 封装SOP-8 12位数模转换器

LTC1446/LTC1446L

• Dual DACs with 12-Bit Resolution 

• SO-8 Package 

• Rail-to-Rail Output Amplifiers 

• Internal Reference 

• Maximum DNL Error: 0.5LSB 

• 3V Operation (LTC1446L): ICC = 650ìA Typ 

• 5V Operation (LTC1446): ICC = 1000ìA Typ 

• Settling Time: 14ìs to ±0.5LSB 

• Power-On Reset Clears DACs to 0V 

• 3-Wire Cascadable Serial Interface with 500kHz 

Update Rate 

• Schmitt Trigger On Input Allows Direct 

Optocoupler Interface 

• Low Cost 

APPLICATIO S 

• Digital Calibration 

• Industrial Process Control 

• Automatic Test Equipment 

• Cellular Telephones 

TYPICAL APPLICATION
Functional Block Diagram: Dual 12-Bit Rail-to-Rail DAC 

LTC1446: 5V 

7 LTC1446L: 3V TO 5V 

LTC1446/LTC1446L 

Dual 12-Bit Rail-to-Rail Micropower DACs in SO-8 

DESCRIPTIO 

The LTC®1446/LTC1446L are dual 12-bit digital-to-analog converters (DACs) available in an SO-8 package. They are complete with a rail-to-rail voltage output amplifier, an internal reference and an easy-to-use 3-wire cascadable serial interface. 

The LTC1446 has an internal reference and a full-scale output of 4.095V. It operates from a single 4.5V to 5.5V supply. 

The LTC1446L has an internal reference and a full-scale output of 2.5V. It operates from a single 2.7V to 5.5V supply. 

The low power supply current makes the LTC1446 family ideal for battery-powered applications. These DACs are available in space saving 8-pin SO and PDIP packages and require no external components for operation.