AD7991YRJZ-1500RL7

Overview

The AD7991YRJZ-1500RL7 is a 12-bit successive approximation analog-to-digital converter (ADC) featuring four single-ended analog input channels and an I2C-compatible serial interface. It operates from a single 2.7 V to 5.5 V power supply with a typical conversion time of 1 µs. The device supports standard, fast, and high-speed I2C modes and includes a track-and-hold amplifier capable of handling input frequencies up to 14 MHz. It is housed in an 8-lead SOT-23 package and functions within a temperature range of −40°C to +125°C.

Feature Summary

• Four single-ended analog input channels or three inputs with one reference input channel
• I2C-compatible serial interface supporting standard, fast, and high-speed modes
• Automatic shutdown mode for low power consumption
• Reference derived from the power supply or external reference

Applications

• System monitoring
• Battery-powered systems
• Data acquisition
• Medical instruments

Procurement Notes

Verify the specific ordering suffix against official Analog Devices documentation to confirm package type, temperature grade, and reel specifications. Ensure compatibility with system voltage requirements and I2C bus constraints before procurement.

Selection Notes

Select this component when a compact 12-bit ADC with multiple channels and I2C connectivity is required. Consider the Y version for extended industrial temperature ranges and verify that the 8-lead SOT-23 package fits the design constraints.

Part Context

This part belongs to the AD7991/AD7995/AD7999 family of low-power, multi-channel ADCs. The AD7991 variant specifically offers 12-bit resolution, distinguishing it from the 10-bit AD7995 and 8-bit AD7999 models within the same series.

Replacement Considerations

Direct substitutes include the AD7995 and AD7999, though they offer lower resolutions. For higher channel counts, consider the AD7994 or AD7998.