AD637KDZ

Overview

The AD637KDZ is a high-precision, wideband RMS-to-DC converter manufactured by Analog Devices Inc. It operates within a supply voltage range of 3 V to 18 V and supports input signals from 20 mVrms to 7 Vrms. The device features a maximum nonlinearity of 0.05% for inputs between 0 V and 2 Vrms, with an additional error of 0.1% up to a crest factor of 3. It provides true RMS, square, mean square, absolute value, and dB outputs across a 60 dB range. The component utilizes a 14-pin DIP package and functions within a temperature range of 0°C to +70°C.

Feature Summary

• Computes true RMS, square, mean square, absolute value, and logarithmic dB outputs
• Features chip select and power-down modes for analog three-state operation and reduced quiescent current
• Provides high accuracy with low nonlinearity over a wide dynamic input range

Applications

• Precision signal processing systems requiring accurate RMS measurement
• Audio and vibration analysis equipment
• Power monitoring and control circuits

Procurement Notes

Verify the specific suffix KDZ against official Analog Devices documentation to confirm pinout compatibility and environmental ratings. Ensure the procurement source provides valid traceability for this commercial grade variant. Cross-reference the 14-pin DIP package dimensions with your PCB footprint requirements before finalizing orders.

Selection Notes

Select the AD637KDZ when a through-hole solution is required for RMS-to-DC conversion in industrial or commercial environments. This part is suitable for designs needing wide bandwidth and high precision without the complexity of external computation. Consider the thermal performance within the 0°C to +70°C operating range during system integration.

Part Context

The AD637 series represents a family of high-performance RMS-to-DC converters designed for demanding applications. The KDZ suffix typically denotes the commercial temperature grade and the specific 14-pin dual in-line package configuration. This variant shares core architectural features with other AD637 models but differs in packaging and operational temperature limits.

Replacement Considerations

The AD637JDZ serves as a direct physical replacement offering identical functionality in the same 14-pin DIP package. Verify that the commercial temperature range of the JDZ meets the specific application requirements previously defined for the KDZ variant.