AD7813YRZ

Overview

The AD7813YRZ is a 10-bit successive approximation analog-to-digital converter manufactured by Analog Devices Inc. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and supports a maximum throughput of 400 kSPS with a conversion time of 2.3 µs. The device features an internal track-and-hold circuit, an on-chip clock oscillator, and an 8-bit parallel interface that requires two read cycles to access the full 10-bit result. It includes automatic power-down functionality, consuming 17.5 mW in normal operation at 5 V and significantly less at lower throughput rates. The component is housed in a 16-lead SOIC package and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates an on-chip track-and-hold amplifier and clock oscillator for simplified system design.
• Features an 8-bit wide parallel interface compatible with standard microprocessors and DSPs.
• Includes automatic power-down mode that activates after each conversion to minimize energy usage.
• Provides dynamic performance specifications including signal-to-noise ratio and distortion metrics.

Applications

• Battery-powered instrumentation systems requiring low power consumption.
• Microprocessor-based data acquisition systems utilizing parallel interfaces.
• Industrial process control applications needing high-speed sampling.

Procurement Notes

Verify the specific ordering suffix to confirm the package type, as the base model may be available in DIP or TSSOP variants. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected variant matches the required thermal and electrical specifications for the target application environment.

Selection Notes

Select this component when a 10-bit resolution and 400 kSPS throughput are required within a single-supply architecture. Consider the automatic power-down feature if average current consumption must be minimized at lower sampling rates. Verify that the host system can support the necessary parallel bus timing and address decoding logic for the two-step read operation.

Part Context

The AD7813 belongs to a family of high-speed, microprocessor-compatible ADCs designed for cost-sensitive applications. It utilizes a charge redistribution DAC architecture to achieve its specified linearity and speed. The Y version indicates specific linearity error guarantees, while the RZ suffix denotes the SOIC package and lead-free construction.

Replacement Considerations

Check for AD7813YRUZ (TSSOP package) or AD7813YN (DIP package) if pin compatibility differs. Evaluate AD7910 or AD7920 for SPI interface alternatives with similar resolution and power profiles.