ADC0834

Features:

NSC MICROWIRE compatible-direct interface to COPS family processors
Easy interface to all microprocessors, or operates "stand-alone"
Operates ratiometrically or with 5 V_DC voltage reference
No zero or full-scale adjust required
2-, 4- or 8-channel multiplexer options with address logic
Shunt regulator allows operation with high voltage supplies
0V to 5V input range with single 5V power supply
Remote operation with serial digital data link
TTL/MOS input/output compatible
0.3" standard width, 8-, 14- or 20-pin DIP package
20 Pin Molded Chip Carrier Package (ADC0838 only)
Surface-Mount Package




Pinout






Specifications

Current into V⁺ (Note 3) 15 mA
Supply Voltage, V_CC (Note 3) 6.5V
Voltage
Logic Inputs −0.3V to V_CC + 0.3V
Analog Inputs −0.3V to V_CC + 0.3V
Input Current per Pin (Note 4) ±5mA
Package ±20 mA
Storage Temperature−65˚C to +150˚C
Package Dissipation
at TA=25˚C (Board Mount)0.8W

Resolution	8 bits
Input Channels	4
Interface Type	Microwire (Serial I/O)
Differential Input	Yes
Max KSample Rate	31 ksps
Min Supply Voltage	4.5 Volt
Max Supply Voltage	6.3 Volt
Reference Source	External
Temperature Min	-40 deg C
Temperature Max	85 deg C
Power Down	No
Input Sample/Hold	No
Special Features	Total unadjusted error is +/-1.0 LSB, Total unadjusted error is +/-0.5 LSB
Data Converter Type	ADC
Max Sample Rate	0.031 MSPS
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Description

The ADC0831 series are 8-bit successive approximation A/D converters with a 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 processors, and can interface with standard shift registers or µPs. The 2-, 4- or 8-channel multiplexers are software configured for single-ended or differential inputs as well as channel assignment.

The differential analog voltage input of ADC0831 series allows increasing the common-mode rejection and offsetting the analog zero input voltage value. In addition, the voltage reference input can be adjusted to allow encoding any smaller analog voltage span to the full 8 bits of resolution.