ADS1278IPAPT

Overview

The ADS1278IPAPT is a high-performance, eight-channel, 24-bit analog-to-digital converter (ADC) from Texas Instruments. It utilizes a sigma-delta architecture with simultaneous sampling capabilities across all channels. The device supports data rates up to 144 kSPS and features an SNR of 111 dB in high-resolution mode. It operates with an analog supply voltage range of 4.75 V to 5.25 V and a digital supply voltage range of 1.65 V to 2.2 V. The component is housed in a 64-pin HTQFP package and includes daisy-chainable serial interfaces for system expansion.

Feature Summary

• Integrates eight independent, high-order chopper-stabilized modulators with FIR digital filters for precise signal conditioning.
• Supports multiple operating modes including high-speed, high-precision, low-power, and low-speed configurations via pin-selectable settings.
• Features linear phase digital filtering with significant out-of-band attenuation to minimize noise and distortion.

Applications

• Bridge vibration monitoring and dynamic strain measurement systems
• Multi-channel acoustic analysis and modal testing equipment
• High-precision industrial pressure sensor interfaces

Procurement Notes

Verify the specific suffix IPAPT corresponds to the HTQFP-64 package and tape-and-reel or cut-tape availability as listed by authorized distributors. Confirm RoHS compliance status and moisture sensitivity level requirements before integration into the manufacturing process. Ensure the external reference voltage matches the specified input ranges for optimal performance.

Selection Notes

Select this component when eight simultaneous sampling channels are required with 24-bit resolution at speeds up to 144 kSPS. Consider the external reference requirement and the specific power supply constraints for analog and digital domains. Evaluate the need for daisy-chaining capabilities if expanding beyond eight channels in the design.

Part Context

This part belongs to the ADS127x series of precision ADCs, which also includes variants like the ADS1274 with fewer channels. The IPAPT suffix denotes the specific surface-mount packaging and terminal finish. It serves as a direct replacement for previous generations requiring multi-channel, high-resolution data acquisition in industrial environments.

Replacement Considerations

The ADS1278IPAPR is the reel-based equivalent of this component. Other family members include the ADS1274, which offers four channels instead of eight. Verify pin compatibility and software register configurations when substituting within the ADS127x family.