Qualified for Automotive Applications

12-Bit Resolution A/D Converter

10-μs Conversion Time Over Operating

Temperature

11 Analog Input Channels

Three 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‡

description

The TLC2543 is a 12-bit, switched-capacitor, successive-approximation, analog-to-digital converters. Each

device, with three control inputs [chip select (CS), the input-output clock, and the address input (DATA INPUT)],

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 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.