AD7812YRZ-REEL7

Overview

The AD7812YRZ-REEL7 is an 8-channel, 10-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices. It operates from a single 2.7 V to 5.5 V supply and features a conversion time of 2.3 µs with a throughput rate up to 350 kSPS. The device integrates a track-and-hold amplifier, a 2.5 V internal reference, and a serial interface compatible with DSPs and microcontrollers. It supports both single-ended and pseudo-differential input configurations via control registers. The component is housed in a 20-lead Small Outline IC (SOIC) package and is qualified for automotive applications.

Feature Summary

• Eight single-ended inputs configurable as seven pseudo-differential pairs or four independent pseudo-differential channels using the control register.
• Integrated 2.5 V ±2.5% on-chip reference circuit that powers down when an external reference is selected.
• Hardware and software control capabilities for Convert Start and Power-Down modes to optimize power consumption at lower throughput rates.
• Package address pin allows two devices to share the same serial bus in multipackage applications.

Applications

• Multipoint data acquisition systems requiring multiple analog inputs.
• Industrial process control and monitoring applications.
• Automotive electronic systems and instrumentation.

Procurement Notes

Verify the specific REEL7 suffix against the manufacturer's current ordering guide to confirm tape and reel packaging specifications. Ensure the Y version designation matches the required linearity and accuracy specifications for your design. Confirm RoHS compliance status and automotive qualification requirements prior to final procurement decisions.

Selection Notes

Select this component when eight analog channels are required within a single package. Consider the AD7811 if only four channels are needed. Evaluate the need for an external reference versus the integrated 2.5 V option based on system accuracy requirements. Ensure the serial interface timing aligns with the host microcontroller or DSP capabilities.

Part Context

This part belongs to the AD7811/AD7812 family of high-speed, low-power sampling ADCs. The AD7812 variant specifically provides eight input channels compared to the four channels in the AD7811. Both devices share identical core architecture, including the SAR converter, serial interface, and power management features, differing primarily in channel count and package lead configuration.

Replacement Considerations

The AD7812YR is a direct equivalent in the same series with identical electrical characteristics but may differ in packaging format. Verify pin compatibility and control register settings when substituting between SOIC and other package types within the AD7812 family.