ADS1174IPAPT

Analog To Digital Converters (ADC) Overview

The ADS1174IPAPT is a quad, simultaneous-sampling, 16-bit analog-to-digital converter (ADC) from Texas Instruments. It utilizes a sigma-delta architecture with an external reference and single-ended inputs. The device operates on a 5V analog supply (4.75 V to 5.25 V) and a 1.8V digital core supply, with I/O levels compatible with 1.65 V to 3.3 V logic. It delivers a data rate of 52 kS/s per channel, achieving a signal-to-noise ratio (SNR) of 97 dB. Key linearity specifications include differential nonlinearity (DNL) and integral nonlinearity (INL) both within +/- 1 LSB. The component is housed in a 64-pin HTQFP package and supports daisy-chainable SPI interfaces.

Analog To Digital Converters (ADC) Feature Summary

• Simultaneous sampling across four independent channels ensures precise phase alignment for multi-phase applications.
• Sigma-delta modulation structure provides high resolution and excellent noise rejection capabilities.
• Daisy-chainable serial interface allows efficient connection of multiple devices without additional pin overhead.

Analog To Digital Converters (ADC) Applications

• Three-phase power monitoring systems
• Coriolis mass flow meters
• Vibration and modal analysis equipment

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'APT' corresponds to the tape-and-reel or cut-tape packaging variant required for your assembly process. Confirm that the operating temperature range of -40°C to +85°C aligns with your environmental design constraints. Ensure the external reference voltage matches the ADC's input requirements for optimal accuracy.

Analog To Digital Converters (ADC) Selection Notes

Select this model when simultaneous multi-channel acquisition is critical, as opposed to multiplexed alternatives which introduce aperture delay errors. Compare against the ADS1178 if eight channels are needed, or the ADS1274 if higher 24-bit resolution is required at lower data rates. Verify that the 52 kS/s speed meets your Nyquist criteria for the input signal bandwidth.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADS117x family of precision data converters. It shares the same HTQFP-64 footprint and pinout compatibility with the ADS1178 octal ADC, facilitating board layout reuse. It serves as a mid-range solution between high-resolution slow converters and high-speed lower-resolution devices.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS1174IPAPR is the reel-packaged equivalent of this part. For direct pin-compatible upgrades requiring higher resolution, consider the ADS1274 series, though data rates will differ. Ensure any substitute maintains the 5V analog supply requirement.