AD7819YRZ-REEL7

Overview

The AD7819YRZ-REEL7 is an 8-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices. It features a single-ended input, parallel interface, and operates on a single supply voltage ranging from 2.7 V to 5.5 V for both analog and digital sections. The device achieves a maximum throughput of 200 kSPS with a conversion time of 4.5 µs. Key performance metrics include a differential nonlinearity (DNL) of ±0.5 LSB, integral nonlinearity (INL) of ±0.5 LSB, and gain error of ±0.5 LSB. Power dissipation is 17.5 mW in normal operation at 5 V. It is housed in a 16-lead SOIC package.

Feature Summary

• Integrates an on-chip track-and-hold circuit and clock oscillator for simplified system design.
• Supports automatic power-down mode to significantly reduce average power consumption at lower sampling rates.
• Features an 8-bit wide parallel interface compatible with standard microprocessors and DSPs.

Applications

• Battery-powered instrumentation systems requiring low power consumption.
• Industrial process control applications utilizing microprocessor-based architectures.
• Data acquisition systems interfacing with DSPs requiring high-speed sampling.

Procurement Notes

Verify the specific ordering suffix REEL7 confirms tape-and-reel packaging upon procurement. Confirm RoHS compliance status through official manufacturer documentation or distributor specifications prior to integration. Ensure ESD precautions are observed during handling due to the sensitivity of the CMOS structure. Validate that the SOIC-16 footprint matches the target PCB layout requirements.

Selection Notes

Select this component when an 8-bit resolution and 200 kSPS throughput are sufficient for the application. Consider the parallel interface requirements and available address decoding logic for microprocessor integration. Evaluate the single-supply operation range against the system's available power rails. Assess whether the automatic power-down feature meets the specific battery life or thermal constraints of the design.

Part Context

The AD7819 belongs to the AD7819 series of 8-bit ADCs from Analog Devices. Variants such as AD7819YNZ and AD7819YRUZ offer identical electrical characteristics but differ in package type, specifically PDIP and TSSOP respectively. The Y suffix denotes the extended temperature range version (-40°C to +125°C).

Replacement Considerations

Direct pin-compatible replacements within the same family include AD7819YR (SOIC-16 tube) and AD7819YRU (TSSOP-16). Verify that any substitute maintains the 2.7 V to 5.5 V supply range and 8-bit parallel interface compatibility.