AD636KHZ

The AD636KHZ is a low power monolithic integrated circuit designed for true RMS-to-DC conversion of low-level signals. It provides performance comparable to more expensive hybrid and modular converters. The device is specified for a signal range of 0 mV to 200 mV RMS and can accommodate crest factors up to 6 with less than 0.5% additional error, making it suitable for complex input waveforms.

Key electrical specifications include a wide response capability with a -3 dB bandwidth of 1 MHz for signals above 100 mV RMS. The AD636KHZ operates from a broad range of dual power supplies (±2.5 V to ±16.5 V) or single supplies (+5 V to +24 V), with a low quiescent current of typically 800 µA, ideal for battery-powered applications. It features laser-trimmed accuracy with a maximum error of 1.0% for the J-version.

The component is housed in a TO-100-10 Metal Can package and is designed for through-hole mounting. The input and output terminals are protected, and the input signal can exceed the power supply without damaging the device. The output buffer amplifier is short-circuit protected. An auxiliary dB output is also available, derived from an internal circuit point representing the logarithm of the RMS output.