AD7812YR-REEL

Overview

The AD7812YR-REEL 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 circuit. The device supports a throughput rate of 350 kSPS with a conversion time of 2.3 µs. It utilizes a DSP-compatible serial interface for data transfer and control. The Y version guarantees ±1 LSB linearity error. This specific part number indicates the component is supplied in a tape and reel packaging format within a 20-lead Small Outline IC (SOIC) package.

Feature Summary

• Eight-channel multiplexing capability with configurable single-ended or pseudo-differential input modes via internal control registers.
• Integrated 2.5 V reference circuitry that powers down when an external reference is selected to minimize current consumption.
• Hardware and software control options for conversion start and power-down states, including automatic power-down between conversions.
• Package address pin allows two devices to share the same serial bus in multipackage applications.

Applications

• Industrial process control systems requiring multi-channel data acquisition.
• Battery-powered instrumentation benefiting from low power consumption and single-supply operation.
• Automotive data acquisition systems qualified for automotive applications.
• Portable test equipment utilizing microcontroller-compatible serial interfaces.

Procurement Notes

Verify the ordering suffix matches the required package type and quantity format. Confirm the revision level aligns with design specifications. Ensure ESD precautions are observed during handling due to sensitivity. Check for RoHS compliance status if required by environmental regulations. Validate that the reel size meets automated assembly requirements.

Selection Notes

Select this model for applications requiring eight input channels with 10-bit resolution. Consider the SOIC package for surface-mount assembly needs. Evaluate power consumption at the target throughput rate using the provided graphs. Ensure the serial interface timing matches the host processor capabilities. Verify voltage levels against the specified logic input ranges.

Part Context

The AD7812 is part of the AD7811/AD7812 family of sampling ADCs. It shares architectural similarities with the AD7811 but offers double the input channels. The Y variant denotes specific linearity performance. The REEL suffix specifies bulk packaging for high-volume manufacturing. It competes in the general-purpose SAR ADC market segment.

Replacement Considerations

Direct substitutes include other ADI 10-bit SAR ADCs with similar channel counts. Verify pin compatibility and serial interface protocols before substitution. Check thermal characteristics and package dimensions for mechanical fit. Ensure electrical specifications meet or exceed original design requirements.