TLC2543I

 12-Bit-Resolution A/D Converter
 10-ms Conversion Time Over Operating Temperature
 11 Analog Input Channels
 3 Built-In Self-Test Modes
 Inherent Sample-and-Hold Function
 Linearity Error . . . ±1 LSB Max
 On-Chip System Clock
 End-of-Conversion Output
 Unipolar or Bipolar Output Operation (Signed Binary With Respect to 1/2 the Applied Voltage Reference)
 Programmable MSB or LSB First
 Programmable Power Down
 Programmable Output Data Length
 CMOS Technology
 Application Report Available†

The TLC2543C and TLC2543I are 12-bit, switchedcapacitor,successive-approximation, analog-todigital converters. Each device has three control inputs [chip select (CS), the input-output clock (I/O CLOCK), and the address input (DATA INPUT)] and is designed for communication with the serial port of a host processor or peripheral through a serial 3-state output. The device allows high-speed data transfers from the host.

In addition to the high-speed converter and versatile control capability, the device TLC2543C and TLC2543I has an on-chip 14-channel multiplexer that can select any one of 11 inputs or any one of three internal self-test voltages. The sample-and-hold function is automatic. At the end of conversion, the end-of-conversion (EOC) output goes high to indicate that conversion is complete. The converter incorporated in the device features differential high-impedance reference inputs that facilitate ratiometric conversion, scaling, and isolation of analog circuitry from logic and supply noise. A switched-capacitor design allows low-error conversion over the full operating temperature range.