ADS8887IDGS

Analog To Digital Converters (ADC) Overview

The ADS8887IDGS is a single-channel, 18-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates with an analog supply voltage ranging from 2.7 V to 3.6 V and a digital supply voltage from 1.65 V to 3.6 V. The device supports a maximum sampling rate of 100 kSPS and features a true differential input architecture. It utilizes an SPI-compatible serial interface and includes an internal oscillator. Key performance metrics include a signal-to-noise ratio of 100 dB and a signal-to-noise and distortion ratio of 99.9 dB. Power consumption is optimized at 700 uW, with a power dissipation of 1.2 mW. It functions within a temperature range of -40°C to +85°C and is housed in a 10-VSSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Supports daisy-chainable operation for cascading multiple devices via the SPI interface.
• Features an integrated internal oscillator to reduce external component requirements.
• Provides a busy indicator pin to facilitate synchronization with digital hosts.

Analog To Digital Converters (ADC) Applications

• Battery-powered instrumentation systems requiring low power consumption
• Industrial process control applications utilizing differential inputs
• Medical equipment data acquisition channels

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix against official Texas Instruments documentation to ensure correct packaging and tape-and-reel specifications. Confirm that the external reference voltage matches the device's operational requirements, as the ADS8887IDGS requires an external reference. Check moisture sensitivity levels and storage conditions prior to assembly to maintain component integrity during surface mount placement.

Analog To Digital Converters (ADC) Selection Notes

Select this component when an 18-bit resolution and 100 kSPS throughput are required in a compact MSOP-10 footprint. Ensure the system design accommodates the specified dual-supply voltage ranges and provides a stable external reference voltage. Consider the daisy-chain capability if multiple converters are needed in the application architecture.

Analog To Digital Converters (ADC) Part Context

This part belongs to the Texas Instruments microPOWER ADS888x family of 18-bit SAR ADCs. The family shares common architectural features such as differential inputs and SPI interfaces, but varies in sampling speed and specific pinout configurations. The ADS8887IDGS represents the lower-speed variant within this series, optimized for ultra-low power applications compared to higher-speed counterparts like the ADS8881.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS8885IDGS offers similar 18-bit resolution and packaging but operates at a higher sampling rate of 400 kSPS. Verify pin compatibility and power budget differences before substitution. No other direct cross-model replacements are confirmed in the provided documentation.