Analog Devices AD637SD High Precision, Wide Bandwidth RMS-to-DC Converter

The AD637SD from Analog Devices Inc. is a high-precision, wide bandwidth integrated true RMS-to-DC converter that delivers a level of performance previously unavailable in monolithic form. It is designed to compute the true root-mean-square level of complex waveforms with a crest factor of up to 7 and a frequency range from DC to 8MHz. The device offers a high level of integration, which simplifies design processes and enhances overall system reliability.

With its laser-trimmed accuracy, the AD637SD is an ideal choice for high-performance applications in measurement, industrial, and communication systems. It features an auxiliary dB output that provides a voltage proportional to the logarithm of the RMS value of the input, facilitating the calculation of signal power in dB form. This is particularly useful in signal processing applications where decibel scaling is required.

The AD637SD operates over a wide supply range of ±5 V to ±18 V and is specified for the extended industrial temperature range of -55°C to +125°C. The device is encapsulated in a hermetic ceramic dual in-line package (DIP), ensuring robust performance in harsh environmental conditions and making it suitable for military and aerospace applications.

Key features of the AD637SD include:

• True RMS-to-DC conversion
• High bandwidth up to 8 MHz
• Low power consumption
• High accuracy with laser-trimmed calibration
• dB output available
• Wide supply voltage range
• Extended industrial temperature range
• Hermetic ceramic DIP packaging

Engineers and designers can rely on the AD637SD for its precision and durability in critical and demanding applications. Its comprehensive feature set ensures that it can handle complex signals with ease, providing accurate and reliable RMS calculations in a variety of electronic systems.

For detailed specifications, application notes, and implementation guidance, visit the Analog Devices website or consult the AD637SD datasheet.