ADC08831 Datasheet, PDF (1/32 Pages) National Semiconductor (TI) – 8-Bit Serial I/O CMOS A/D Converters with Multiplexer and Sample/Hold Function

ADC08831, ADC08832
www.ti.com
SNAS015C – SEPTEMBER 1999 – REVISED MARCH 2013
ADC08831 /ADC08832 8-Bit Serial I/O CMOS A/D Converters with Multiplexer and
Sample/Hold Function
Check for Samples: ADC08831, ADC08832
FEATURES
1
•2 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 V_CC
• No Zero or Full Scale Adjustment Required
• TTL/CMOS Input/Output Compatible
• Superior Pin Compatible Replacement for
ADC0831/2
APPLICATIONS
• Digitizing Sensors and Waveforms
• Process Control Monitoring
• Remote Sensing in Noisy Environments
• Instrumentation
• Embedded Systems
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
COPSfamily of micro-controllers, PLD's,
microprocessors, DSP's, or shift registers. The serial
I/O is configured to comply with the 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 combinations 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.
KEY SPECIFICATIONS
• Resolution: 8 Bits
• Conversion Time (f_C = 2 MHz): 4μs (Max)
• Power Dissipation: 8.5mW (Typ)
• Low Power Mode: 3.0mW (Typ)
• Single Supply: 5V_DC
• Total Unadjusted Error: ±1LSB
• No Missing Codes over Temperature
Typical Application
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2013, Texas Instruments Incorporated