SLAS075A - FEBRUARY 1989 - REVISED MARCH 1995
The TLC542 is a CMOS converter built around an 8-bit switched-capacitor successive-approximation analog-to-digital converter. The device is designed for serial interface to a microprocessor or peripheral via a 3-state output with three inputs [including I/O CLOCK, CS\ (chip select), and ADDRESS INPUT]. The TLC542 allows high-speed data transfers and sample rates of up to 40,000 samples per second. In addition to the high-speed converter and versatile control logic, 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-of-conversion (EOC) output pin goes high to indicate that conversion is complete. Detailed information on interfacing to most popular microprocessors is readily available from the factory.
The converter incorporated in the TLC542 features differential high-impedance reference inputs that facilitate ratiometric conversion, scaling, and isolation of analog circuitry from logic and supply noises. A switched-capacitor design allows low-error (±0.5 LSB) conversion in 20 us over the full operating temperature range.
The TLC542C is characterized for operation from 0°C to 70°C and the TLC542I is characterized for operation from -40°C to 85°C.
View more information about generic part numbers:TLC542
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