ADC0819

Features:

Separate asynchronous converter clock and serial data I/O clock.
19-Channel multiplexer with 5-Bit serial address logic.
Built-in sample and hold function.
Ratiometric or absolute voltage referencing.
No zero or full-scale adjust required.
Internally addressable test voltage.
0V to 5V input range with single 5V power supply.
TTL/MOS input/output compatible.
28-pin molded chip carrier or 28-pin molded DIP


Pinout




Specifications

Supply Voltage (VCC)                                           6.5V
Voltage
Inputs and Outputs                      -0.3V to VCC +0.3V
Input Current Per Pin (Note 3)                             5mA
Total Package Input Current (Note 3)                20mA



Description

The ADC0819 is an 8-Bit successive approximation A/D converter with simultaneous serial I/O. The serial input controls an analog multiplexer which selects from 19 input channels or an internal half scale test voltage. An input sample-and-hold is implemented by a capacitive reference ladder and sampled data comparator. This allows the input signal to vary during the conversion cycle. Separate serial I/O and conversion clock inputs are provided to facilitate the interface to various microprocessors.