AD7992BRMZ-1REEL

Overview

The AD7992BRMZ-1REEL is a 12-bit successive approximation analog-to-digital converter (ADC) featuring an I2C-compatible serial interface. It integrates a two-channel multiplexer and track-and-hold amplifier, supporting single-ended inputs with a range of 0 to REFIN. The device operates on a single supply voltage from 2.7 V to 5.5 V and achieves a throughput rate up to 188 kSPS. Key electrical specifications include a signal-to-noise ratio of 71 dB minimum, integral nonlinearity of ±1 LSB maximum, and differential nonlinearity of +1/–0.9 LSB maximum. It supports standard, fast, and high-speed I2C modes, with a shutdown current of 1 µA maximum.

Feature Summary

• I2C-compatible serial interface supporting standard, fast, and high-speed modes for flexible system integration
• Integrated out-of-range indicator/alert function with programmable limit registers for real-time monitoring
• Automatic power-down mode between conversions to minimize energy consumption in battery-operated applications
• Pin-selectable addressing via the AS pin allows multiple devices to share the same serial bus

Applications

• Portable instrumentation requiring low power consumption and multi-channel data acquisition
• Industrial process control systems utilizing I2C communication protocols
• Battery-powered measurement devices needing extended operational life through efficient power management

Procurement Notes

Verify that the ordering suffix matches the required I2C speed capabilities, as the -1 variant supports high-speed mode unlike the -0 version. Confirm package availability and reel specifications if automated assembly is planned. Ensure the external reference voltage falls within the specified 1.2 V to VDD range for optimal performance.

Selection Notes

Select this component when a 12-bit resolution is sufficient for dual-channel single-ended input applications. Consider the AD7992-0 if high-speed I2C operation above 400 kHz is not required. Evaluate the need for the ALERT output feature; if unused, the pin can be configured as a BUSY indicator or left unconnected depending on design constraints.

Part Context

This part belongs to the AD7992 family of low-power ADCs from Analog Devices. It shares architectural similarities with other members like the AD7993 and AD7994 but differs in channel count and package options. The BRMZ designation indicates the industrial temperature range and MSOP packaging.

Replacement Considerations

Direct functional substitutes include the AD7992BRMZ-0REEL, though it lacks high-speed I2C support. For higher channel counts, consider the AD7994 or AD7998 series. Verify pin compatibility and register mapping before replacing with other SAR ADCs.