资 源 简 介
The TLC542 is a CMOS converter built around an8-bit switched-capacitor successive-approximaTIonanalog-to-digital converter. The device is designedfor serial interface to a microprocessor or peripheralvia a 3-state output with three inputs [including I/OCLOCK, CS (chip select), and ADDRESS INPUT].The TLC542 allows high-speed data transfers andsample rates of up to 40,000 samples per second. In addiTIon to the high-speed converter and versaTIle controllogic, an on-chip 12-channel analog mulTIplexer can sample any one of 11 inputs or an internal self-test voltage,and the sample and hold is started under microprocessor control. At the end of conversion, the end-ofconversion(EOC) output pin goes high to indicate that conversion is complete.The converter incorporated in the TLC542 features differential high-impedance reference inputs that facilitateratiometric conversion, scaling, and isolation of analog circuitry from logic and supply noises. A switchedcapacitordesign allows low-error (±0.5 LSB) conversion in 20 μs over the full operating temperature range.The TLC542C is characterized for operation from 0°C to 70°C and the TLC542I is characterized for operationfrom –40°C to 85°C.
