AD7812YRZ

Overview

The AD7812YRZ 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 achieves a throughput rate of 350 kSPS with a conversion time of 2.3 µs. The device integrates an on-chip track-and-hold amplifier and a 2.5 V reference circuit, which can be bypassed for external references ranging from 1.2 V to VDD. It utilizes a DSP-compatible serial interface and includes hardware and software control for automatic power-down modes.

Feature Summary

• Configurable multi-channel input architecture supporting single-ended or pseudo-differential signal acquisition
• Integrated onboard voltage reference and track-and-hold amplifier for simplified system design
• Hardware address pin enabling dual-device sharing of a common serial bus in multipackage applications

Applications

• Multipoint data acquisition systems requiring channel scanning
• Industrial process control monitoring
• Automotive instrumentation interfaces

Procurement Notes

Verify the specific package marking and date code against the manufacturer's current production status. Confirm that the Y suffix corresponds to the specified linearity error and operating temperature range. Ensure the SOIC-20 footprint matches the target PCB layout dimensions before finalizing procurement orders.

Selection Notes

Select this component when eight independent analog inputs are required within a single package. It is suitable for designs needing a serial interface to minimize microcontroller pin usage. Consider the internal reference accuracy if external precision references cannot be accommodated in the bill of materials.

Part Context

This part belongs to the AD7811/AD7812 family of successive approximation register ADCs. While the AD7811 provides four channels in a 16-lead package, the AD7812 expands this capability to eight channels using a 20-lead SOIC format. Both share identical core performance specifications and control logic.

Replacement Considerations

The AD7811YRZ serves as a functional substitute if only four channels are required, utilizing a 16-lead package instead of the 20-lead configuration.