ADS1220IPWR

Overview

The ADS1220IPWR is a low-power, low-noise 24-bit analog-to-digital converter (ADC) manufactured by Texas Instruments. It utilizes delta-sigma architecture and features an integrated multiplexer, programmable gain amplifier (PGA), and internal reference voltage. The device supports data rates up to 2,000 samples per second (SPS). It operates on a single supply voltage ranging from 2.3V to 5.5V for both analog and digital domains. The component is housed in a 16-pin Thin-Shrink Small-Outline Package (TSSOP) with a width of 4.40mm. It includes an onboard temperature sensor and offers differential or single-ended input configurations.

Feature Summary

• Integrates a 24-bit delta-sigma ADC with a programmable gain amplifier and input multiplexer for signal conditioning.
• Features a low-noise design suitable for precision small-signal sensor applications.
• Includes an internal reference voltage source and an onboard temperature sensor to reduce external component count.

Applications

• IO-Link sensor transmitters
• Precision industrial process control systems
• Battery-powered measurement devices

Procurement Notes

Verify the specific package variant and suffix when ordering, as the IPWR designation indicates a tape-and-reel packaging format. Confirm that the required operating temperature range aligns with the commercial/industrial specifications defined in the official datasheet. Ensure compatibility with the host microcontroller's SPI interface timing requirements before finalizing procurement.

Selection Notes

Select this component for applications requiring high resolution with minimal power consumption. Compare against the ADS1222 if multiple differential inputs are necessary, as the ADS1220 provides four single-ended or two differential channels. Verify that the maximum sampling rate of 2kSPS meets the system bandwidth requirements. Check pinout compatibility if replacing older versions of the ADS1220 family.

Part Context

The ADS1220 belongs to Texas Instruments' family of low-power, 24-bit sigma-delta ADCs designed for battery-operated systems. It is functionally similar to the ADS1221 but differs in channel configuration and package options. The IPWR suffix specifically denotes the surface-mount TSSOP-16 package supplied in a reel format for automated assembly processes.

Replacement Considerations

The ADS1222IPWR serves as a compatible alternative for designs requiring two differential inputs instead of four single-ended inputs. Other members of the ADS122x family may offer different pin counts or performance trade-offs; verify electrical characteristics and pin assignments before substitution.