ADC08138 - National Semiconductor

ADC08138 8-Bit High-Speed Serial I/O A/D Converters

The ADC08131/ADC08134/ADC08138 are 8-bit successive approximation A/D converters with serial I/O and configurable input multiplexers with up to 8 channels. The serial I/O is configured to comply with the NSC MICROWIRE™ serial data exchange standard for easy interface to the COPS™ family of controllers, and can easily interface with standard shift registers o.

Features

n Serial digital data link requires few I/O pins n Analog input track/hold function n 4- or 8-channel input multiplexer options with address logic n On-chip 2.5V band-gap reference (±2% over temperature guaranteed) n No zero or full scale adjustment required n TTL/CMOS input/output compatible n 0V to 5V analog input range with single 5V power supply Key Specifications n Resolution 8 Bits n Conversion time (fC = 1 MHz) 8 µs (Max) n Power dissipation 20 mW (Max) n Single supply n Total unadjusted error 5 VDC (±5%) ±1⁄2 LSB and ±1 LSB n Linearity Error (VREF = 2.5V) ±1⁄2 LSB n No miss.