ADC08131_13 Datasheet, PDF (1/24 Pages) Texas Instruments – 8-Bit High-Speed Serial I/O A/D Converters

OBSOLETE
ADC08131, ADC08134, ADC08138
www.ti.com
SNAS066D – JUNE 1999 – REVISED APRIL 2013
ADC08131/ADC08134/ADC08138 8-Bit High-Speed Serial I/O A/D Converters with
Multiplexer Options, Voltage Reference, and Track/Hold Function
Check for Samples: ADC08131, ADC08134, ADC08138
FEATURES
1
•23 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 Ensured)
• No Zero or Full Scale Adjustment Required
• TTL/CMOS Input/Output Compatible
• 0V to 5V Analog Input Range with Single 5V
Power Supply
APPLICATIONS
• Digitizing Automotive Sensors
• Process Control/Monitoring
• Remote Sensing in Noisy Environments
• Embedded Diagnostics
DESCRIPTION
The ADC08131/ADC08134/ADC08138 are 8-bit
successive approximation A/D converters with serial
I/O and configurable input multiplexers with up to 8
channels. The serial I/O is configured to comply with
the 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 ensured performance over
temperature.
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. In addition, input voltage
spans as small as 1V can be accommodated.
KEY SPECIFICATIONS
• Resolution: 8 Bits
• Conversion Time (f_C = 1 MHz): 8 µs (Max)
• Power Dissipation: 20 mW (Max)
• Single Supply: 5 V_DC (±5%)
• Total Unadjusted Error: ±½ LSB and ±1 LSB
• Linearity Error (V_REF = 2.5V): ±½ LSB
• No Missing Codes (Over Temperature)
• On-Board Reference: +2.5V ±1.5% (Max)
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.
COPS is a trademark of Texas Instruments.
2
All other trademarks are the property of their respective owners.
3
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