ADC08831 Datasheet | National Semiconductor

Description The ADC08831/ADC08832 are 8-bit successive approximation Analog to Digital converters with 3-wire serial interfaces and a configurable input multiplexer for 2 channels. The serial I/O will interface to COPS™family of micro-controllers, PLD’s, microprocessors, DSP’s, or shift registers. The serial I/O is configured to ply with the NSC MICROWIRE™ serial data exchange standard. To minimize total power consumption, the ADC08831/ADC08832 automatically go into low power mode whenever they are not performing conversions. A track/hold function allows the analog voltage at the positive input to vary during the actual A/D conversion. The analog inputs can be configured to operate in various binations of single-ended, differential, or pseudo-differential modes. The voltage reference input can be adjusted to allow encoding of small analog voltage spans to the full 8-bits of resolution. n Remote sensing in noisy environments n Instrumentation n Embedded Systems Features n n n n n n n 3-wire serial digital data link requires few I/O pins Analog input track/hold function 2-channel input multiplexer option with address logic Analog input voltage range from GND to VCC No zero or full scale adjustment required TTL/CMOS input/output patible Superior pin patible replacement for ADC0831/2 Key Specifications n n n n n n n Resolution: 8 bits Conversion time (f C = 2 MHz): 4µs (max) Power dissipation: 8.5m W (typ) Low power mode: 3.0m W (typ) Single supply: 5VDC Total unadjusted error: ± 1LSB No missing codes over temperature Applications n Digitizing sensors and waveforms n Process control monitoring Typical Application DS100108-44 DS100108-43 COPS™ is a trademark of National Semiconductor Corporation. MICROWIRE™ is a trademark of National Semiconductor Corporation. TRI-STATE™ © 1999 National Semiconductor Corporation DS100108 .national. Connection Diagrams ADC08831 Wide Body SO Packages ADC08832 Wide Body SO Packages DS100108-4 DS100108-3 ADC08831 N,M,MM...