ADS1230IPWG4

Overview

The ADS1230IPWG4 is a 20-bit delta-sigma analog-to-digital converter (ADC) designed for resistive bridge sensor applications. It integrates a low-noise programmable gain amplifier (PGA) with selectable gains of 64 or 128, supporting full-scale differential inputs of ±39 mV or ±19.5 mV respectively. The device operates on a single supply voltage ranging from 2.7 V to 5.3 V and consumes a maximum power dissipation of 7.7 mW. It offers two data rates: 10 SPS with 50 Hz and 60 Hz line frequency rejection, and 80 SPS. The component features an internal oscillator or external clock input, offset calibration capabilities, and serial interface connectivity compatible with microcontrollers.

Feature Summary

• Integrates a precision 20-bit delta-sigma ADC with a built-in low-noise PGA for direct bridge sensor interfacing
• Provides selectable PGA gain settings of 64 or 128 to accommodate varying sensor signal levels
• Includes digital filtering with configurable 50 Hz and 60 Hz notch rejection for noise suppression
• Supports low-power operation with dedicated standby and shutdown modes controlled by hardware pins

Applications

• High-precision weighing scales and load cell measurements
• Strain gauge and pressure sensor signal conditioning
• Industrial process control instrumentation requiring high resolution
• Medical equipment utilizing resistive bridge transducers

Procurement Notes

Verify the suffix G4 indicates RoHS compliance and lead-free construction as per Texas Instruments standards. Confirm the package designation IPWR corresponds to the 16-pin TSSOP form factor. Ensure the operating temperature range meets the -40°C to +85°C requirement for the specific application environment. Cross-reference the datasheet revision date to ensure compatibility with current design specifications.

Selection Notes

Select this component when a single-channel, high-resolution conversion is required for low-level differential signals. The integrated PGA eliminates the need for external amplification stages, reducing board space. Consider the 10 SPS mode if strict 50/60 Hz rejection is necessary, or the 80 SPS mode for higher throughput needs. Verify that the external reference voltage source matches the device's input requirements for optimal accuracy.

Part Context

The ADS1230IPWG4 belongs to the ADS123x family of precision ADCs from Texas Instruments. It shares architectural similarities with the ADS1231 and ADS1232 but differs in resolution and channel count. The 'G4' suffix denotes a green/RoHS-compliant variant with copper clip lead frame technology. This part serves as a specialized solution for bridge sensors, distinct from general-purpose multi-channel converters like the ADS1232.

Replacement Considerations

The ADS1230IPWR is the non-RoHS compliant equivalent with identical electrical characteristics. For higher resolution needs, the ADS1231 or ADS1232 may be considered, though they offer different pinouts and resolutions. The ADS1130 provides a lower-cost alternative with reduced resolution and no integrated PGA.