ADS1120IPW

Analog To Digital Converters (ADC) Overview

The ADS1120IPW is a low-power, low-noise 16-bit analog-to-digital converter (ADC) from Texas Instruments. It utilizes a sigma-delta architecture and features four channels with differential or single-ended input capabilities. The device supports an SPI interface and achieves sampling rates up to 2 kS/s. It operates on both analog and digital supply voltages ranging from 2.3 V to 5.5 V. Key specifications include a maximum power consumption of 1.4 mW, an integral nonlinearity (INL) of 0.002% FSR, and an internal reference voltage of 2 V. The component is housed in a TSSOP-16 package and functions within a temperature range of -40°C to +125°C.

Analog To Digital Converters (ADC) Feature Summary

• Integrated programmable gain amplifier (PGA) and excitation current sources (iDACs) for sensor interfacing
• Built-in 50/60 Hz rejection filters to minimize power line interference
• On-chip oscillator and temperature sensor for system monitoring

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring high-resolution signal acquisition
• Weigh scales and load cell measurement applications
• Medical instrumentation devices needing low-noise data conversion

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix to confirm the packaging format, as the IPW designation typically indicates tube packaging while other suffixes may denote tape and reel options. Ensure compatibility with the target PCB footprint for the TSSOP-16 package. Confirm that the selected variant meets the required operating temperature range and humidity sensitivity classifications for the intended deployment environment.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 16-bit resolution and multi-channel capability are required for precision measurements. Consider the integrated PGA and iDACs if external amplification or RTD excitation is needed. Verify that the SPI interface speed and power consumption constraints align with the system design requirements compared to higher-speed SAR ADC alternatives.

Analog To Digital Converters (ADC) Part Context

The ADS1120IPW belongs to the ADS1120 family of precision ADCs designed for low-power applications. This series includes variants such as the ADS1120QPWRQ1 for automotive use. The IPW part number specifically identifies the commercial grade version in a TSSOP-16 package, distinguishing it from automotive qualified or different package options within the same functional family.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS1120IPWR serves as a tape-and-reel alternative to the IPW tube version. For automotive applications, the ADS1120QPWRQ1 provides AEC-Q100 qualification with similar electrical characteristics.