ADS1243IPWTG4

Overview

The ADS1243IPWTG4 is a 24-bit analog-to-digital converter (ADC) from Texas Instruments, housed in a TSSOP-20 package. It features four differential input channels and utilizes a sigma-delta architecture. The device supports SPI and 3-wire serial interfaces with sampling rates up to 15 S/s. It operates on dual power supplies ranging from 2.7 V to 5.25 V for both analog and digital domains. Key performance metrics include a differential nonlinearity of +/- 1 LSB and integral nonlinearity of +/- 0.0015% FSR. Power consumption is specified at 600 uW typical and 1.9 mW maximum. The operational temperature range spans from -40°C to +85°C.

Feature Summary

• Integrated programmable gain amplifier (PGA) for signal conditioning
• Built-in GPIO functionality for system control flexibility
• Hardware filtering capability providing 50/60 Hz line frequency rejection

Applications

• Industrial process control systems requiring high-resolution data acquisition
• Weigh scales and load cell measurement applications
• Portable instrumentation utilizing low-power operation

Procurement Notes

Verify the specific suffix G4 indicates lead-free compliance and RoHS adherence when sourcing. Confirm the IPWT designation corresponds to the TSSOP-20 surface-mount package variant. Ensure the ordering information matches the exact pinout and electrical specifications required for the target design implementation.

Selection Notes

Select this component when four differential inputs are necessary within a single channel count constraint. Compare against the ADS1242 if fewer channels are sufficient or the ADS1244 if additional channels are required. Evaluate the 15 S/s speed limit against application bandwidth requirements before finalizing the choice.

Part Context

This part belongs to the ADS124x family of precision ADCs designed for low-noise, high-resolution applications. It shares architectural similarities with the ADS1242 and ADS1244 but offers a specific four-channel configuration. The series targets industrial and scientific instruments where accuracy and low power consumption are critical design parameters.

Replacement Considerations

The ADS1243IPWRG4 serves as a tape-and-reel alternative to the cut-tape IPWTG4 variant. Verify that the functional specifications remain identical across packaging differences before substitution.