AD7991YRJZ-0500RL7

Overview

The AD7991YRJZ-0500RL7 is a 12-bit, 4-channel successive approximation register (SAR) analog-to-digital converter (ADC) from Analog Devices. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and features an I2C-compatible serial interface supporting standard, fast, and high-speed modes. The device includes a track-and-hold amplifier capable of handling input frequencies up to 14 MHz and offers four single-ended analog input channels. It is housed in an 8-lead SOT-23 package and is specified for operation across a temperature range of −40°C to +125°C.

Feature Summary

• Four single-ended analog input channels with integrated multiplexer
• I2C-compatible serial interface with support for 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 documentation to confirm package type and temperature grade. Confirm that the component matches the required I2C address variant for system integration. Ensure compatibility with the host controller's I2C bus speed requirements before procurement.

Selection Notes

Select this component when a compact, multi-channel ADC with digital interface is required. Consider the 12-bit resolution and 14 MHz bandwidth for signal fidelity needs. Evaluate the power consumption characteristics relative to the system's battery life requirements and thermal constraints within the operating temperature range.

Part Context

This part belongs to the AD7991/AD7995/AD7999 family of low-power, 12-/10-/8-bit ADCs. These devices share similar architectures and interfaces but differ in resolution and channel configurations. The AD7991 specifically provides 12-bit resolution across four channels, distinguishing it from lower-resolution variants in the same series.

Replacement Considerations

Direct substitutes include other members of the AD799x family such as the AD7995 (10-bit) or AD7999 (8-bit), provided resolution requirements are met. Cross-family replacements require verification of pin compatibility, interface protocols, and electrical specifications.