ADS7881IRGZR

Analog To Digital Converters (ADC) Overview

The ADS7881IRGZR is a 12-bit, 4-MSPS successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features a pseudo-differential input stage with a range of −0 V to 2.5 V and an integrated 2.5-V reference. The device utilizes a high-speed parallel interface and supports back-to-back conversion for maximum throughput. Power management includes Nap mode (10 mW) and Power Down mode (10 µW). It operates within a temperature range of −40°C to 85°C and is housed in a 48-pin QFN package.

Analog To Digital Converters (ADC) Feature Summary

• 12-Bit Resolution at 4 MSPS Sampling Rate
• Pseudo-Differential Input Range: −0 V to 2.5 V
• Integrated 2.5-V Reference with Internal Buffer
• Nap Mode (10 mW) and Power Down Mode (10 µW)
• High Speed Parallel Interface with Byte Mode Support

Analog To Digital Converters (ADC) Applications

• Optical Networking (DWDM, MEMS Based Switching)
• Spectrum Analyzers
• High Speed Data Acquisition Systems
• Telecommunication Equipment
• Ultra-Sound Detection

Analog To Digital Converters (ADC) Procurement Notes

Verify the RGZ package designator and tape-and-reel transport media quantity of 2500 units. Confirm the operating temperature range is −40°C to 85°C. Ensure compatibility with +VA supply voltages between 4.75 V and 5.25 V and digital logic levels defined by +VBD.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 12-bit resolution and 4 MHz throughput are required with low power consumption options. The internal 2.5-V reference simplifies external circuitry. The pseudo-differential input allows for common-mode noise cancellation. Verify that the system can accommodate the 48-pin QFN footprint and thermal pad requirements.

Analog To Digital Converters (ADC) Part Context

The ADS7881 belongs to the ADS788x family of high-speed SAR ADCs from Texas Instruments. This series provides varying resolutions and sampling rates while maintaining a consistent parallel interface architecture. The IRGZR suffix specifically denotes the industrial temperature grade and the QFN surface-mount packaging format.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitutes include ADS7881IPFBR and ADS7881IPFBT. These alternatives offer identical electrical specifications but utilize the 48-pin TQFP package instead of the QFN form factor.