ADS8681IPWR

Analog To Digital Converters (ADC) Overview

The Texas Instruments ADS8681IPWR is a 16-bit, high-speed, single-supply Successive Approximation Register (SAR) Analog-to-Digital Converter (ADC) designed as an integrated data acquisition system. It operates with a 5V analog supply and supports digital logic voltages from 1.65V to 5.25V. The device features a throughput of 1MSPS and includes an integrated programmable gain amplifier (PGA), sample-and-hold circuit, and input drivers. It offers overvoltage protection up to ±20V and utilizes a low-drift on-chip 4.096V reference. The ADS8681IPWR supports true bipolar input ranges such as ±12.288V, ±6.144V, ±10.24V, ±5.12V, and ±2.56V, as well as unipolar ranges including 0V to 12.288V, 0V to 10.24V, 0V to 6.144V, and 0V to 5.12V. It communicates via a standard SPI interface and is housed in a 16-pin TSSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Integrated analog front-end with programmable gain amplifier and input drivers for simplified signal conditioning
• Built-in overvoltage protection capable of withstanding input voltages up to ±20V
• On-chip low-temperature-drift 4.096V voltage reference ensuring high DC accuracy
• Flexible input range configuration supporting both bipolar and unipolar signal types

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring high precision
• Medical equipment and diagnostic devices
• Factory automation and sensor interfaces
• Data acquisition modules in test and measurement instruments

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix IPWR corresponds to the 16-TSSOP package variant when sourcing. Confirm RoHS3 compliance status through official manufacturer documentation or authorized distributor certificates prior to procurement. Ensure the ordering part number matches the required temperature grade and packaging format to avoid integration errors during assembly.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS8681IPWR when a single-channel, 16-bit resolution with 1MSPS throughput is required in a surface-mount TSSOP package. This component is suitable for designs needing integrated overvoltage protection and programmable input ranges without external signal conditioning components. Compare against the ADS8681IRUMT if a smaller WQFN footprint is preferred, or the ADS8689IPW if a lower sampling rate of 100kSPS suffices for the application.

Analog To Digital Converters (ADC) Part Context

The ADS8681IPWR belongs to the ADS868x family of 16-bit SAR ADCs from Texas Instruments. This series integrates the ADC, PGA, and reference into a compact solution. The IPWR suffix specifically denotes the plastic small-outline package (TSSOP) variant, distinguishing it from the WQFN versions like the IRUMT. All members share similar electrical characteristics but differ in physical package dimensions and pinout configurations.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS8681IPWRG4 is a lead-free version of the same device. For package alternatives within the same performance class, consider the ADS8681IRUMT (WQFN) or ADS8689IPW (TSSOP, 100kSPS). Verify pin compatibility and thermal requirements before substituting.