AD7811YRUZ

Overview

The AD7811YRUZ is a 10-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It features four single-ended analog input channels and operates from a single 2.7 V to 5.5 V supply. The device integrates an onboard track-and-hold amplifier, a 2.5 V reference circuit, and a high-speed serial interface compatible with DSPs and microcontrollers. Key electrical specifications include a maximum conversion time of 2.3 µs, a throughput rate of 350 kSPS, and a typical power consumption of 10 mW during normal operation. The Y version guarantees ±1 LSB relative accuracy and differential nonlinearity.

Feature Summary

• Configurable input channels support both single-ended and pseudo-differential modes via control registers.
• Integrated 2.5 V reference circuitry reduces external component requirements.
• Hardware and software control options allow for automatic power-down at lower throughput rates.
• Package address pin enables multiple devices to share the same serial bus.

Applications

• Portable instrumentation systems requiring low power consumption.
• Battery-operated data acquisition applications.
• Industrial process control monitoring.
• Automotive sensor signal conditioning.

Procurement Notes

Verify the package type matches the RU-16 designation for the Thin Shrink Small Outline Package. Confirm that the Y suffix indicates the specified linearity performance of ±1 LSB. Ensure the ordering code corresponds to the specific tape and reel or tube quantity required for the manufacturing process. Check for automotive qualification status if the application demands it.

Selection Notes

Select this component when a 10-bit resolution with four input channels is sufficient for the application. Consider the AD7812 if eight channels are required instead of four. Evaluate the power consumption requirements against the available throughput rates, as power scales with sampling speed. Ensure the serial interface timing meets the host microcontroller's capabilities.

Part Context

The AD7811YRUZ belongs to the AD7811/AD7812 family of 10-bit sampling ADCs. It shares architectural similarities with the AD7810 but offers multiple input channels. The YRUZ variant specifically denotes the TSSOP-16 package option within the broader product line designed for space-constrained designs.

Replacement Considerations

The AD7811YR serves as a direct alternative in the SOIC-16 package. The AD7811YN is available in the 16-lead Plastic DIP package. These parts share identical electrical characteristics and pinouts, differing only in the physical package form factor.