ADS1224IPWT

Overview

The ADS1224IPWT is a low-power, 24-bit analog-to-digital converter (ADC) from Texas Instruments, housed in a 20-pin TSSOP package. It utilizes a sigma-delta architecture to provide high-resolution data conversion with a maximum sampling rate of 240 samples per second. The device supports four input channels and accepts both differential and single-ended inputs. It operates on a single supply voltage ranging from 2.7 V to 5.5 V for both analog and digital domains. Communication is handled via an SPI interface. Key performance metrics include a differential nonlinearity (DNL) of +/- 1 LSB and an integral nonlinearity (INL) of 0.0015% FSR. Power consumption is specified at 1.35 mW typical.

Feature Summary

• Integrated internal oscillator eliminates the need for external clock components.
• Built-in programmable gain amplifier (PGA) allows direct signal conditioning.
• Includes integrated temperature sensor for system monitoring.
• Features programmable notch filters for effective 50/60 Hz line frequency rejection.

Applications

• Industrial process control systems requiring precise measurement.
• Portable battery-powered instrumentation due to low power consumption.
• Weight scales and load cell interfaces.
• Medical equipment such as pulse oximeters and blood pressure monitors.

Procurement Notes

Verify the specific suffix IPWT corresponds to the TSSOP-20 package and reel/cut-tape packaging format when ordering. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets prior to procurement. Ensure compatibility with existing PCB footprint designs for the 20-lead thin-shrink small-outline package.

Selection Notes

Select this component when high resolution is required alongside moderate speed capabilities. Compare against the ADS1220 if higher sampling rates up to 2 kSPS are necessary, noting the pinout differences. Consider the ADS1222 if only two input channels are sufficient for the application design. Verify that the 2.7 V minimum supply voltage aligns with the system's power budget constraints.

Part Context

This part belongs to the ADS122x family of precision ADCs designed for low-power applications. It shares architectural similarities with the ADS1220 and ADS1222 but offers four input channels instead of two. The IPWT suffix indicates a plastic TSSOP package with tape-and-reel shipping options, distinguishing it from tube-packaged variants like the ADS1224IPW.

Replacement Considerations

The ADS1224IPWR is a pin-compatible alternative available in a reel package variant. For applications requiring higher speed, the ADS1220 series may serve as a functional upgrade, though pin configurations differ. No direct cross-manufacturer equivalents are documented in the provided source material.