ADC08131

Features:

Serial digital data link requires few I/O pins
Analog input track/hold function
4- or 8-channel input multiplexer options with address logic
On-chip 2.5V band-gap reference (±2% over temperature guaranteed)
No zero or full scale adjustment required
TTL/CMOS input/output compatible
0V to 5V analog input range with single 5V power supply


Application

Digitizing automotive sensors
Process control/monitoring
Remote sensing in noisy environments
Embedded diagnostics


Pinout




Specifications

Supply Voltage (V_CC)                                                  6.5V
Voltage at Inputs and Outputs          −0.3V to V_CC + 0.3V
Input Current at Any Pin (Note 4)                             ±5mA
Package Input Current (Note 4)                            ±20 mA
Power Dissipation at TA = 25˚C
(Note 5)                                                                800 mW
ESD Susceptibility (Note 6)                                      1500V


Description

The ADC08131/ADC08134/ADC08138 are 8-bit successive approximation A/D converters with serial I/O and config- urable 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 or microprocessors. All three devices provide a 2.5V band-gap derived reference with guaranteed performance over temperature.

A track/hold function of ADC08131/ADC08134/ADC08138 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 combinations of single-ended, differential, or pseudo-differential modes. In addition, input voltage spans as small as 1V can be accommodated.