ADS1246IPW

Overview

The ADS1246IPW is a low-noise, precision 24-bit analog-to-digital converter (ADC) manufactured by Texas Instruments. It utilizes a sigma-delta architecture with an integrated programmable gain amplifier (PGA) and supports data rates up to 2 kS/s. The device operates on single-supply voltages ranging from 2.7 V to 5.25 V for both analog and digital domains. It features a 16-pin TSSOP package and offers differential input capability. Key performance metrics include a differential nonlinearity of ±1 LSB and an integral nonlinearity of 15 ppm. The component is designed for industrial applications requiring high accuracy within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates a low-noise programmable gain amplifier with selectable gains up to 128
• Includes a built-in internal oscillator and temperature sensor for system monitoring
• Provides synchronous 50 Hz and 60 Hz rejection at lower data rates

Applications

• RTD and thermocouple measurement systems
• Industrial process control instrumentation
• High-precision pressure measurement devices

Procurement Notes

Verify the specific suffix 'IPW' corresponds to the TSSOP-16 tube packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration into surface-mount assembly lines. Ensure the ordering part number matches the exact pinout and electrical specifications defined in the official datasheet.

Selection Notes

Select this component when a single-channel, high-resolution conversion path is required. The ADS1246IPW is suitable for designs needing integrated signal conditioning without external multiplexers. Consider alternative models if multiple differential inputs or additional GPIO functionality are necessary for the application.

Part Context

This device belongs to the ADS124x family of precision ADCs from Texas Instruments. The family shares common architectural features such as sigma-delta modulation and SPI compatibility. The ADS1246IPW specifically serves as the single-channel variant within this series, distinguishing itself from multi-channel counterparts like the ADS1247 and ADS1248.

Replacement Considerations

Direct functional substitutes within the same package include other members of the ADS124x family, such as the ADS1247 or ADS1248, provided the channel count difference is acceptable. Verify pin compatibility and software register mapping before substituting.