ADS1112IDGSR

Analog To Digital Converters (ADC) Overview

The ADS1112IDGSR is a precision, continuous self-calibrating analog-to-digital converter (ADC) manufactured by Texas Instruments. It features a 16-bit resolution and delta-sigma architecture within a compact 10-VSSOP package. The device supports two differential or three single-ended input channels via an internal multiplexer. It operates on a single supply voltage ranging from 2.7V to 5.5V for both analog and digital domains. Key electrical parameters include a maximum sampling rate of 240 samples per second (SPS), an internal 2.048V reference voltage providing a ±2.048V input range, and a programmable gain amplifier (PGA) with gains up to 8x. The component functions within a temperature range of -40°C to +85°C and utilizes an I²C-compatible serial interface.

Analog To Digital Converters (ADC) Feature Summary

• Integrated self-calibration mechanism ensures high accuracy without external calibration requirements.
• On-chip programmable gain amplifier allows measurement of small signals with high resolution.
• Dual address pins enable connection of up to eight devices on a single I²C bus.
• Automatic power-down in single-shot mode significantly reduces current consumption during idle periods.

Analog To Digital Converters (ADC) Applications

• Portable battery-powered instrumentation
• Industrial process control systems
• Smart transmitters and sensors

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'DGSR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 'I' grade designation meets the operational temperature range specifications for the intended environment. Ensure compatibility with the target I²C bus voltage levels and check for any RoHS3 compliance documentation if required by regional regulations.

Analog To Digital Converters (ADC) Selection Notes

Select this component when high resolution is prioritized over conversion speed, as the maximum data rate is limited to 240 SPS. Consider the internal reference and PGA capabilities to simplify analog front-end design. Verify that the 10-VSSOP footprint fits the available PCB space. Compare against the ADS1113 or ADS1115 if different channel counts or higher sampling rates are necessary for the application.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS111x family of low-power, 16-bit ADCs from Texas Instruments. It shares architectural similarities with the ADS1113 (single-channel) and ADS1115 (four-channel) but is distinct in its dual/differential input configuration. The IDGSR suffix indicates industrial temperature range and reel packaging, distinguishing it from the DGST variant which uses cut-tape packaging.

Analog To Digital Converters (ADC) Replacement Considerations

ADS1112IDGST is a parameter-equivalent alternative from Texas Instruments, differing primarily in packaging type (cut tape vs. reel). Other ADS111x series members may serve as functional substitutes if channel count or speed requirements differ, though pinouts and register maps should be verified for compatibility.