描述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.特性12-Bit-Resolution A/D Converter 10-us 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