The AD654 from Analog Devices Inc. is a monolithic Voltage-to-Frequency Converter (VFC) that offers high performance and versatility in a compact package. Designed for easy integration into a wide range of applications, the AD654 is well-suited for use in process control systems, remote sensing, data acquisition, and frequency modulation applications.

Key Features

• Low Cost: The AD654 is an affordable solution for converting analog signals to frequency output, making it ideal for budget-sensitive projects without compromising quality.
• Single Supply Operation: It can operate from a single 5 V to 36 V supply or dual ±5 V to ±18 V supplies, providing flexibility in various power environments.
• High Linearity: The device ensures excellent linearity with a nonlinearity error of typically 0.005% at 10 kHz, ensuring accurate frequency representation of the input voltage.
• Wide Dynamic Range: The AD654 can handle zero to 10 V input range with a frequency output from 1 Hz to 1 MHz, accommodating a broad spectrum of signal inputs.
• Low Power Consumption: With a typical supply current of 2 mA, the device is energy efficient, making it suitable for portable and battery-operated equipment.

Applications

The versatility of the AD654 allows it to be used in a variety of applications, including:

• Frequency to Digital Conversion
• Long-Term Integration
• Linear Frequency Modulation and Demodulation
• V/F or F/V Conversion
• Motor Speed Control

Technical Specifications

With its ease of use, including no external components for operation at 10 kHz, and its 8-lead PDIP and SOIC packaging options, the AD654 provides a flexible and reliable solution for all your VFC needs.