AD7819YRUZ-REEL7

Overview

The AD7819YRUZ-REEL7 is an 8-bit successive approximation analog-to-digital converter (ADC) 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 on-chip track-and-hold circuit, an internal clock oscillator, and an 8-bit parallel interface. It is housed in a 16-lead Thin Shrink Small Outline Package (TSSOP). Key performance metrics include a signal-to-noise ratio of 48 dB minimum, total harmonic distortion of -70 dB typical, and linearity errors (DNL/INL/Gain Error) within ±0.5 LSB.

Feature Summary

• Automatic power-down mode significantly reduces average power consumption at lower sampling rates.
• Integrated track-and-hold circuitry and internal clock oscillator simplify system design.
• Microprocessor-compatible 8-bit parallel interface allows direct connection to standard logic.

Applications

• Battery-powered instrumentation systems requiring low power operation.
• Industrial process control applications utilizing microprocessors or DSPs.
• Data acquisition systems interfacing with 8051 or PIC microcontrollers.

Procurement Notes

Verify the specific suffix RUZ indicates RoHS compliance and lead-free status as per manufacturer specifications. Confirm the REEL7 designation corresponds to tape-and-reel packaging for automated assembly. Ensure compatibility with the required operating temperature range of -40°C to +125°C for the intended application environment.

Selection Notes

Select this component when an 8-bit resolution and 200 kSPS speed are sufficient for the application. Consider the TSSOP package if space constraints preclude larger DIP or SOIC footprints. Evaluate the external reference requirements, as the AD7819 utilizes an external VREF input rather than an internal reference source.

Part Context

This part belongs to the AD7819 family of high-speed, microprocessor-compatible ADCs. It shares core architectural features with variants such as the AD7819YNZ (PDIP) and AD7819YRZ (SOIC), differing primarily in the physical package type and manufacturing lot specifications defined by the ordering suffixes.

Replacement Considerations

Direct pin-compatible replacements include other AD7819 variants such as AD7819YRZ or AD7819YNZ, provided the package style matches the PCB footprint. Verify that any substitute maintains the same 2.7 V to 5.5 V supply range and 8-bit parallel interface timing characteristics.