ADC12H034CIMSA/NOPB

Analog To Digital Converters (ADC) Overview

The ADC12H034CIMSA/NOPB is a self-calibrating, 12-bit plus sign successive approximation analog-to-digital converter (ADC) manufactured by Texas Instruments. It features an integrated 8-channel multiplexer with sample-and-hold functionality and serial I/O compatible with MICROWIRE protocols. The device operates on a single +5V supply, consuming a maximum of 33 mW in active mode and 100 μW in power-down mode. Key electrical specifications include a maximum conversion time of 5.5 μs at an 8 MHz clock rate, an integral linearity error of ±1 LSB after auto-calibration, and a fully differential unipolar analog input range of 0V to +5V.

Analog To Digital Converters (ADC) Feature Summary

• Self-Calibrating Architecture: Automatically adjusts linearity, zero, and full-scale errors to less than ±1 LSB without external adjustment components.
• 8-Channel Multiplexer: Supports configurable differential, pseudo-differential, or single-ended input modes via CH0–CH7 pins.
• Serial Interface: MICROWIRE-compatible 3-wire serial I/O allows for variable digital output word length and format configuration.
• Low Power Consumption: Maximum active power dissipation is 33 mW; typical power-down current is 20 μA.

Analog To Digital Converters (ADC) Applications

• Medical Instruments
• Process Control Systems
• Test Equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify component availability status prior to procurement, as the datasheet indicates that some devices within this family may be obsolete or subject to lifetime buy restrictions. Confirm package integrity and ESD handling procedures during storage, as the leads require shorting or conductive foam placement to prevent electrostatic damage to MOS gates.

Analog To Digital Converters (ADC) Selection Notes

Select the ADC12H034CIMSA/NOPB when an 8-channel input multiplexer is required alongside high-speed conversion capabilities up to 8 MHz. Ensure the application utilizes a single +5V supply and requires serial communication interfaces. Note that the 'H' designation specifies support for higher clock frequencies compared to the standard '0' family variants.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADC12(H)03x family of self-calibrating A/D converters from Texas Instruments. The specific suffix 'H' denotes support for an 8 MHz conversion clock, distinguishing it from the ADC1203x series which is limited to 5 MHz. The 'CIMSA' suffix identifies the industrial temperature range (-40°C to +85°C) and the 20-pin wide-body SOIC package.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consider the ADC12034CIN/NOPB for lower speed requirements (5 MHz) or the ADC128S102CIMTX/NOPB for parallel interface applications, though pinouts and interfaces differ significantly.