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.