AD7819YN

Overview

The AD7819YN is an 8-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from 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, internal clock oscillator, and an 8-bit parallel interface compatible with microprocessors and DSPs. Power consumption is 10.5 mW at 3 V in normal operation, reducing to 57.75 µW at 1 kSPS via automatic power-down mode. It is housed in a 16-lead plastic dual-in-line package (DIP).

Feature Summary

• Single-supply operation with low power consumption and automatic power-down capabilities.
• Integrated track-and-hold amplifier and internal clock oscillator for simplified system design.
• 8-bit wide parallel interface designed for direct connection to microprocessors and DSPs.

Applications

• Battery-powered data acquisition systems requiring low power consumption.
• Industrial process control and monitoring applications.
• Portable instrumentation and handheld meters.

Procurement Notes

Verify the specific ordering suffix 'YN' corresponds to the 16-lead Plastic DIP package as documented in the manufacturer's ordering guide. Confirm that the component meets the required operating temperature range of -40°C to +125°C for your application environment. Ensure proper electrostatic discharge precautions are observed during handling due to the device's sensitivity.

Selection Notes

Select this component when an 8-bit resolution and up to 200 kSPS sampling rate are sufficient for the application. It is suitable for designs requiring a parallel interface without external clock generation. Consider the automatic power-down feature if battery life is critical at lower sampling rates. Verify that the source impedance of the analog input signal allows for the specified 100 ns acquisition time.

Part Context

The AD7819 is part of Analog Devices' family of high-speed, low-power ADCs. The 'YN' designation specifically identifies the version packaged in a 16-lead Plastic Dual-In-Line (DIP) format. This packaging option facilitates through-hole mounting on printed circuit boards, distinguishing it from surface-mount variants like the SOIC or TSSOP packages available within the same product line.

Replacement Considerations

Direct pin-compatible replacements within the same package include the AD7819YR (SOIC) and AD7819YRU (TSSOP), provided the board layout supports the respective form factors. Other series members may require interface modifications.