DDC118IRTCTG4

Analog To Digital Converters (ADC) Overview

The DDC118IRTCTG4 is a 32-channel, current-input analog-to-digital converter manufactured by Texas Instruments. It features a delta-sigma architecture with 20-bit resolution and integrated programmable gain amplifiers for each channel. The device supports input currents ranging from 1 nA to 5 mA per channel. It utilizes an SPI-compatible serial interface for configuration and data readout. The component operates within a supply voltage range of 2.7 V to 5.5 V and is housed in a 64-pin TQFP package.

Analog To Digital Converters (ADC) Feature Summary

• Integrates 32 independent channels with dedicated programmable gain amplifiers
• Provides high-resolution 20-bit delta-sigma conversion for low-level signals
• Supports wide dynamic range through selectable integration times and gain settings

Analog To Digital Converters (ADC) Applications

• X-ray detector readout systems
• Gamma-ray spectroscopy instrumentation
• Photodiode array signal conditioning

Analog To Digital Converters (ADC) Procurement Notes

Verify the complete part number including the suffix against official Texas Instruments documentation to ensure correct package type and temperature rating. Confirm RoHS compliance status as indicated by the G4 suffix. Cross-reference the specific revision level with the manufacturer's datasheet to validate pinout and electrical characteristics before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when designing systems requiring simultaneous acquisition of multiple low-current signals. Evaluate the required channel count and resolution against alternative single-channel or lower-density devices. Ensure the system power supply meets the specified voltage range and that the microcontroller interface supports the required SPI communication speed.

Analog To Digital Converters (ADC) Part Context

This device belongs to the DDC family of current-input ADCs designed for precision measurement applications. It serves as a direct replacement for previous generations of Burr-Brown current-input converters. The integration of amplifiers and ADCs reduces external component count compared to discrete solutions.

Analog To Digital Converters (ADC) Replacement Considerations

Publicly confirmed substitute part numbers include DDC118IRTCR and DDC118IRGTR. Verify pin compatibility and software register mapping when transitioning between these variants.