ADS8881IDGS

Analog To Digital Converters (ADC) Overview

The ADS8881IDGS is an 18-bit, 1-MSPS true-differential input analog-to-digital converter (ADC) from Texas Instruments. It operates with a 2.7 V to 3.6 V analog supply and a 1.65 V to 3.6 V digital supply, supporting a 2.5 V to 5 V external reference voltage. The device features a SAR architecture with SPI-compatible serial interface and daisy-chain capability. Key performance metrics include a signal-to-noise ratio of 100 dB and a SINAD of 99.9 dB. Power consumption is 5.5 mW at full speed. It functions within a temperature range of -40°C to +85°C and is housed in a 10-lead MSOP package.

Analog To Digital Converters (ADC) Feature Summary

• Supports unipolar true-differential analog input signals with a differential input swing ranging from -VREF to +VREF.
• Features an optional busy-indicator bit to facilitate synchronization with the digital host system.
• Power consumption scales directly with sampling speed, optimizing efficiency for lower-speed applications.

Analog To Digital Converters (ADC) Applications

• Automatic test equipment (ATE)
• Precision medical equipment
• Instrumentation and process controls
• Low-power, battery-operated instruments

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix IDGS confirms the industrial temperature range (-40°C to +85°C) and MSOP-10 packaging. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets before procurement. Ensure the external reference voltage requirements align with the 2.5 V to 5 V specification for proper system integration.

Analog To Digital Converters (ADC) Selection Notes

Select this component when high resolution and moderate speed are required for single-channel differential inputs. Compare against the ADS8885 for higher throughput or ADS8887 for lower power consumption at reduced speeds. Ensure the system design accommodates the independent digital and analog supply voltages and provides adequate decoupling for the 1 MSPS operation.

Analog To Digital Converters (ADC) Part Context

The ADS8881IDGS belongs to the microPOWER™ series of ADCs from Texas Instruments. This series emphasizes low power consumption relative to performance. Other variants in the family include the ADS8885 and ADS8887, which offer different sampling rates while maintaining similar resolution and interface characteristics. The IDGS suffix specifically denotes the industrial grade temperature range and surface-mount packaging.

Analog To Digital Converters (ADC) Replacement Considerations

ADS8881CDGS: Commercial temperature range variant (0°C to +70°C). ADS8881IDGSR: Tape and reel packaging version of the same electrical specifications. ADS8881IDRCT: VSON-10 package alternative with identical electrical performance.