AD7812YRZ-REEL

Overview

The AD7812YRZ-REEL is an 8-channel, 10-bit successive approximation register (SAR) analog-to-digital converter manufactured by Analog Devices. It operates from a single 2.7 V to 5.5 V supply and achieves a throughput of 350 kSPS with a conversion time of 2.3 µs. The device integrates a track-and-hold amplifier and a 2.5 V reference circuit. It features a serial interface compatible with DSPs and microcontrollers, allowing for software or hardware control of conversions and power-down modes.

Feature Summary

• Integrates eight single-ended input channels configurable as pseudo-differential pairs via the control register.
• Includes an onboard 2.5 V reference circuit that powers down when an external reference is selected.
• Supports multipackage applications through a package address pin for sharing a single serial bus.

Applications

• Industrial process control systems requiring multi-channel data acquisition
• Battery-powered instrumentation utilizing low-power SAR architecture
• Automotive sensor interfaces meeting qualification standards

Procurement Notes

Verify the specific suffix 'REEL' indicates tape-and-reel packaging during procurement. Confirm the 'Y' grade meets the required operating temperature range of -40°C to +105°C. Ensure the serial interface timing parameters align with the host controller's clock specifications before finalizing orders.

Selection Notes

Select this component when eight channels are required within a single package. Compare against the AD7811 if only four channels are needed. Verify that the 10-bit resolution and 350 kSPS speed meet system requirements. Check if the integrated 2.5 V reference is sufficient or if an external precision reference is necessary for higher accuracy.

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 share identical core performance characteristics, including the 10-bit SAR architecture and serial interface compatibility.

Replacement Considerations

The AD7812YRUZ serves as a direct pin-compatible alternative in TSSOP-20 packaging. The AD7812YN offers a plastic DIP option. Cross-reference the AD7811 if fewer channels are acceptable for the application design.