ADS1174IPAPR

Analog To Digital Converters (ADC) Overview

The ADS1174IPAPR is a quad, simultaneous-sampling, 16-bit analog-to-digital converter (ADC) from Texas Instruments. It utilizes a sigma-delta architecture with four independent channels operating at a maximum sample rate of 52 kS/s per channel. The device accepts single-ended inputs and communicates via an SPI interface. It requires an external reference and operates on separate analog (4.75 V to 5.25 V) and digital (1.65 V to 1.95 V) power supplies. Key performance metrics include a signal-to-noise ratio of 97 dB, differential nonlinearity of ±1 LSB, and integral nonlinearity of ±1 LSB. It is housed in a 64-pin HTQFP package and functions within a temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• Provides true simultaneous sampling across all four input channels for synchronized data acquisition.
• Supports daisy-chainable operation to simplify multi-device system architectures.
• Integrates a high-performance sigma-delta modulator for precise 16-bit resolution conversion.

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring multi-channel monitoring
• Medical instrumentation such as ECG and EEG front-ends
• High-fidelity audio acquisition equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix IPAPR to confirm the HTQFP-64 package and reel packaging configuration. Ensure the design supports the required dual voltage rails for analog and digital domains. Confirm that the external reference circuit meets the noise specifications necessary to maintain the advertised 97 dB SNR performance under operational conditions.

Analog To Digital Converters (ADC) Selection Notes

Select this component when simultaneous sampling of four channels is critical, distinguishing it from multiplexed ADCs. Consider the ADS1178 if eight channels are needed, or the ADS1274 for higher resolution applications. Evaluate the power consumption requirements against the typical 135 mW dissipation to ensure adequate thermal management within the target enclosure.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS117x family of precision analog-to-digital converters. It shares architectural similarities with the ADS1178 but offers four channels instead of eight. The IPAPR designation indicates a specific tape-and-reel packaging variant suitable for automated surface-mount assembly processes in high-volume manufacturing environments.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS1178 serves as a compatible alternative for designs requiring additional channels while maintaining similar electrical characteristics. Verify pin compatibility and software register configurations when migrating between these family members to ensure seamless integration without hardware redesign.