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.