AD7999ARJZ-1RL

Overview

The AD7999ARJZ-1RL is an 8-bit, low-power 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 supply with a typical conversion time of 1 µs. The device includes a track-and-hold amplifier supporting input frequencies up to 14 MHz and allows reference derivation from VDD or an external source on the VIN3/VREF pin. It supports standard, fast, and high-speed I2C modes, offers automatic shutdown with 1 µA maximum current, and is qualified for automotive applications in an 8-lead SOT-23 package.

Feature Summary

• Four single-ended analog input channels with integrated multiplexer
• I2C-compatible serial interface supporting standard, fast, and high-speed modes
• Automatic power-down mode reducing consumption to 1 µA maximum
• Reference voltage selectable between internal VDD or external VIN3/VREF input

Applications

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

Procurement Notes

Verify the specific suffix ARJZ-1RL against the manufacturer's ordering guide to confirm package type, temperature range, and reel quantity. Ensure the I2C address matches system requirements, as this variant corresponds to the designated address configuration. Confirm RoHS compliance and automotive qualification status through official documentation before integration.

Selection Notes

Select this component when eight-bit resolution and four-channel sampling are required within a compact SOT-23 footprint. It is suitable for designs needing low power consumption and simple serial communication. Verify that the 14 MHz full-power bandwidth meets signal frequency requirements and that the I2C bus speed aligns with the controller capabilities.

Part Context

This part belongs to the AD7991/AD7995/AD7999 family of low-power ADCs. While sharing the same package and interface, it differs from the AD7991 (12-bit) and AD7995 (10-bit) primarily in resolution and associated accuracy metrics such as integral nonlinearity and gain error specifications.

Replacement Considerations

Direct functional replacements within the same family include the AD7991ARJZ-1RL and AD7995ARJZ-1RL, though these offer higher resolutions. For lower channel counts, consider the AD7992 or AD7993 series.