12-Bit-Resolution A/D Converter

10-ms Conversion Time Over Operating

Temperature Range

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 (EOC) Output

Unipolar or Bipolar Output Operation

(Signed Binary With Respect to Half of the

Applied Referenced Voltage)

Programmable MSB or LSB First

Programmable Power Down

Programmable Output Data Length

CMOS Technology

description

The TLV2543C and TLV2543I are 12-bit, switched-capacitor, successive-approximation, analog-to-digital

converters (ADCs). 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 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.

The TLV2543 is available in the DW, DB, and N packages. The TLV2543C is characterized for operation from

0°C to 70°C, and the TLV2543I is characterized for operation from –40°C to 85°C.