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LTC1446IN8 Datasheet(PDF) 1 Page - Linear Technology |
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LTC1446IN8 Datasheet(HTML) 1 Page - Linear Technology |
1 / 12 page 1 LTC1446/LTC1446L Dual 12-Bit Rail-to-Rail Micropower DACs in SO-8 S FEATURE DESCRIPTIO s Dual DACs with 12-Bit Resolution s SO-8 Package s Rail-to-Rail Output Amplifiers s 3V Operation (LTC1446L): ICC = 650µA Typ s 5V Operation (LTC1446): ICC = 1000µA Typ s Internal Reference s Power-On Reset Clears DACs to 0V s 3-Wire Cascadable Serial Interface s Maximum DNL Error: 0.5LSB s Low Cost s Schmitt Trigger On Input Allows Direct Optocoupler Interface 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. APPLICATI TYPICAL Differential Nonlinearity vs Input Code CODE 0 –0.5 –0.4 –0.2 –0.1 0 0.5 0.2 1024 2048 2560 1446/46L G13 –0.3 0.3 0.4 0.1 512 1536 3072 3584 4095 – + – + 12-BIT DAC B LTC1446: 5V LTC1446L: 3V TO 5V RAIL-TO-RAIL VOLTAGE OUTPUT 12-BIT DAC A POWER-ON RESET 24-BIT SHIFT REG AND DAC LATCH µP DIN 2 7 DOUT 4 6 1446/1446L TA01 CLK 1 CS/LD 3 8 VOUT B 5 VOUT A VCC GND Functional Block Diagram: Dual 12-Bit Rail-to-Rail DAC S APPLICATI s Digital Calibration s Industrial Process Control s Automatic Test Equipment s Cellular Telephones , LTC and LT are registered trademarks of Linear Technology Corporation. |
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