8-Bit Serial I/O A/D Converter - Texas Instruments
Description
ADC0831-N, ADC0832-N, ADC0834-N, ADC0838-N
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SNAS531B – AUGUST 1999 – REVISED MARCH 2013
ADC0831-N/ADC0832-N/ADC0834-N/ADC0838-N 8-Bit Serial I/O A/D Converters with Multiplexer Options
Check for Samples: ADC0831-N, ADC0832-N, ADC0834-N, ADC0838-N
FEATURES
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•2 TI MICROWIRE Compatible—Direct Interface to COPS Family Processors
• Easy Interface to All Microprocessors, or Operates “Stand-Alone”
• Operates Ratiometrically or with 5 VDC 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 in.
Standard Width, 8-, 14- or 20-Pin PDIP
Package • 20 Pin PLCC Package (ADC0838-N Only) • SOIC Package
KEY SPECIFICATIONS
• Resolution: 8 Bits
• Total Unadjusted Error: ±½ LSB and ±1 LSB
• Single Supply: 5 VDC • Low Power: 15 mW
• Conversion Time: 32 μs
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 TI 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 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.
Typical Application
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