FEATURES

· Controlled Baseline

– One Assembly/Test Site, One Fabrication

Site

· Extended Temperature Performance of –40°C

to 125°C (TLC2543Q) and –55°C to 125°C

(TLC2543M)

· Enhanced Diminishing Manufacturing Sources

(DMS) Support

· Enhanced Product Change Notification

· Qualification Pedigree (1)

· 12-Bit-Resolution Analog-to-Digital Converter

(ADC)

· 10-ms 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 (EOC) Output

· Unipolar or Bipolar Output Operation (Signed

Binary With Respect to 1/2 the Applied

Voltage Reference)

· Programmable Most Significant Bit (MSB) or

Least Significant Bit (LSB) First

· Programmable Power Down

· Programmable Output Data Length

· CMOS Technology

· Application Report Available (2)

DESCRIPTION/ORDERING INFORMATION

The TLC2543 is a 12-bit, switched-capacitor, successive-approximation, analog-to-digital converter (ADC). This

device, with three control inputs [chip select (CS), input-output clock (I/O CLOCK), and 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 1 of 11 inputs or any 1 of 3 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.