AD7819YRUZ

Overview

The AD7819YRUZ is an 8-bit successive approximation register (SAR) 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 200 kSPS with a conversion time of 4.5 µs. The device features an 8-bit parallel interface, an on-chip track-and-hold circuit, and an internal clock oscillator. It is housed in a 16-lead Thin Shrink Small Outline Package (TSSOP). DC accuracy specifications include a differential nonlinearity (DNL) and integral nonlinearity (INL) of ±0.5 LSB, with a gain error of ±0.5 LSB. Power consumption is 17.5 mW at 5 V during normal operation, significantly reduced via automatic power-down modes.

Feature Summary

• Automatic power-down mode reduces average power consumption at lower throughput rates by powering down after each conversion cycle.
• Microprocessor-compatible 8-bit wide parallel interface allows direct connection to most popular microprocessors and DSPs with minimal external logic.
• On-chip track-and-hold circuitry ensures accurate signal acquisition with a specified acquisition time of 100 ns.

Applications

• Battery-powered instrumentation systems requiring low power consumption
• Industrial process control data acquisition
• Portable medical devices

Procurement Notes

Verify the specific ordering suffix RUZ corresponds to the TSSOP-16 package and lead-free RoHS compliance status as defined in the manufacturer's current documentation. Confirm availability through authorized distributors, as stock levels may vary. Ensure the component meets the required operating temperature range of -40°C to +125°C for the intended application environment.

Selection Notes

Select the AD7819YRUZ when an 8-bit resolution and up to 200 kSPS sampling rate are sufficient for the application. Consider this part if a parallel interface is preferred over serial options and if single-supply operation between 2.7 V and 5.5 V is required. Evaluate the automatic power-down feature against system throughput requirements to optimize energy efficiency.

Part Context

The AD7819YRUZ belongs to the AD7819 family of 8-bit SAR ADCs from Analog Devices. This series includes variants such as the AD7819YNZ (Plastic DIP) and AD7819YR (SOIC), offering different packaging options while maintaining identical electrical performance characteristics. The YRUZ designation specifically identifies the TSSOP package variant within this product line.

Replacement Considerations

Direct pin-compatible replacements within the same family include AD7819YR (SOIC-16) and AD7819YNZ (DIP-16). Verify that any substitute maintains the 2.7 V to 5.5 V supply range and 8-bit parallel interface compatibility.