AD7812YR-REEL7

Overview

The AD7812YR-REEL7 is a high-speed, low-power 10-bit analog-to-digital converter featuring eight single-ended input channels. It operates from a single 2.7 V to 5.5 V supply and includes an onboard track-and-hold amplifier and a 2.5 V reference. The device supports a throughput rate of 350 kSPS with a conversion time of 2.3 µs. It utilizes a DSP-compatible serial interface and offers automatic power-down modes to minimize energy consumption during idle periods.

Feature Summary

• Eight-channel multiplexing capability with configurable single-ended or pseudo-differential input modes
• Integrated 2.5 V reference circuitry with external reference support option
• Hardware and software control for conversion start and power-down states
• Package address pin enabling multiple devices to share a single serial bus

Applications

• Industrial process control data acquisition systems
• Battery-powered instrumentation requiring low power consumption
• Multipoint temperature monitoring applications
• Portable test and measurement equipment

Procurement Notes

Verify the REEL7 suffix indicates tape and reel packaging when sourcing components. Confirm the Y version designation matches the required linearity specifications. Ensure the SOIC package variant aligns with PCB footprint requirements. Cross-reference the automotive qualification status if operating in harsh environments.

Selection Notes

Select this component for applications requiring eight input channels within a compact surface-mount package. Consider the 2.3 µs conversion time for signal bandwidth requirements. Evaluate the power-down modes against system duty cycles to optimize battery life. Verify compatibility with existing microcontroller serial interfaces regarding voltage levels.

Part Context

This part belongs to the AD7811/AD7812 family of successive approximation register ADCs. The AD7812 specifically provides eight channels compared to the four channels in the AD7811. Both share identical core architecture, speed, and interface characteristics, differing primarily in channel count and pin configuration.

Replacement Considerations

The AD7811 serves as a functional substitute if only four channels are required. Other Analog Devices SAR ADCs may replace this part if channel count or resolution differences are acceptable. Verify pin compatibility and serial interface timing before substitution.