Analog Devices AD737BQ True RMS-to-DC Converter

The AD737BQ from Analog Devices Inc. is a high-precision, low-power, true RMS-to-DC converter that delivers a precise direct current output proportional to the root mean square (RMS) value of the input voltage. This integrated circuit (IC) is designed to offer accurate RMS calculations over a wide range of waveforms, including complex patterns such as those found in industrial, audio, and communication applications.

One of the key features of the AD737BQ is its ability to process waveforms with large crest factors without the need for external scaling or attenuation. This makes it an ideal choice for applications that require precise energy measurement or signal level analysis. The device can handle input frequencies up to 1 MHz, ensuring versatility across a broad spectrum of applications.

The AD737BQ operates from a single +5 V supply or dual ±5 V supplies, providing flexibility in system design. Its low power consumption, typically 200 μA, makes it suitable for portable and battery-powered instruments where power efficiency is critical. Additionally, the device's high input impedance reduces loading on the signal source, preserving signal integrity.

With its compact 8-pin PDIP package, the AD737BQ is easy to integrate into existing designs, saving valuable board space. The straightforward pin configuration simplifies the implementation process, allowing designers to add true RMS functionality without complex circuitry.

Key specifications of the AD737BQ include:

• True RMS-to-DC conversion
• Wide bandwidth: DC to 1 MHz
• Low power consumption: 200 μA typical
• High accuracy over a wide temperature range
• Single or dual supply operation: +5 V or ±5 V
• High input impedance
• Compact 8-pin PDIP package

Whether you're designing audio equipment, precision measurement instruments, or any other system requiring reliable RMS calculations, the AD737BQ is a robust solution that combines performance with simplicity. Analog Devices Inc. continues to lead in the field of analog technology, and the AD737BQ is a testament to their commitment to providing high-quality, innovative products.