ADS1219IPW

Overview

The ADS1219IPW is a 24-bit, low-power analog-to-digital converter (ADC) manufactured by Texas Instruments. It utilizes a delta-sigma architecture and features four programmable input channels with an integrated multiplexer. The device supports sampling rates up to 1 kilospamples per second (kSPS) and includes a programmable gain amplifier (PGA) with gains ranging from 1 to 32. It operates on a single supply voltage between 2.3V and 5.5V for both analog and digital domains. Communication is handled via a standard SPI interface. The component is housed in a 16-pin TSSOP package and is designed for high-precision applications requiring low noise and high resolution.

Feature Summary

• Integrates a 24-bit delta-sigma ADC core with a built-in programmable gain amplifier and internal reference voltage source.
• Features a flexible input multiplexer supporting four single-ended or two differential analog input channels.
• Includes comprehensive digital filtering capabilities with selectable notch filters for 50Hz and 60Hz line frequency rejection.

Applications

• Industrial process control systems requiring high-resolution sensor signal acquisition.
• Portable battery-powered instrumentation due to low power consumption characteristics.
• Precision weighing scales and load cell measurement interfaces.
• Medical equipment and patient monitoring devices needing accurate physiological signal digitization.

Procurement Notes

Verify the specific suffix 'IPW' corresponds to the 16-pin TSSOP tube packaging variant when sourcing. Confirm that the order quantity aligns with the manufacturer's standard tube pack size to avoid partial tube handling issues. Ensure compatibility with the required operating temperature range of -40°C to +125°C for industrial-grade specifications. Cross-reference the datasheet revision to ensure pinout and electrical parameters match the design requirements.

Selection Notes

Select this component when a balance of high resolution and moderate speed is required. The ADS1219 is suitable for applications where channel count is limited to four but precision is critical. Consider the internal reference accuracy if external calibration is not feasible. Compare against the ADS1220 if higher sampling rates or different interface protocols are needed. Evaluate power budget constraints as the device offers multiple low-power modes.

Part Context

The ADS1219 belongs to Texas Instruments' family of low-power, high-precision sigma-delta ADCs. It shares architectural similarities with the ADS1220 and ADS1232 but differs in interface type and sampling speed. The IPW suffix denotes the plastic small-outline package with wide body, distinct from the IPWR reel variant. This part serves as a bridge between general-purpose microcontroller ADCs and specialized multi-channel data acquisition systems.

Replacement Considerations

The ADS1219IPWR is the identical functional device packaged in tape-and-reel format instead of tubes. No other direct cross-model replacements with identical pinouts and specifications are publicly confirmed in the provided documentation.