Manufacturer Part Number
AD637JRZ
Manufacturer
Analog Devices, Inc.
Introduction
The AD637 is a precision integrated circuit that converts an AC input signal to a DC output voltage proportional to the RMS (Root Mean Square) value of the input. It is designed for applications that require accurate RMS measurement, such as power meters, true RMS voltmeters, and wattmeters.
Product Features and Performance
Accurately converts AC input signals to a DC output proportional to the true RMS value
Wide bandwidth of 1 MHz
High crest factor capability of up to 7
Low nonlinearity of 0.2% typical
Low temperature coefficient of 50 ppm/°C typical
Low power consumption of 2.2 mA typical
Product Advantages
Precise RMS-to-DC conversion
Wide dynamic range and high crest factor handling
Low power consumption
Small footprint with 16-SOIC package
Key Technical Parameters
Voltage Supply: ±3V to ±18V
Current Supply: 2.2 mA typical
Bandwidth: 1 MHz
Crest Factor: Up to 7
Nonlinearity: 0.2% typical
Temperature Coefficient: 50 ppm/°C typical
Quality and Safety Features
RoHS3 compliant
Surface mount package for reliable and compact integration
Compatibility
Suitable for a wide range of applications that require accurate RMS measurement, such as power meters, true RMS voltmeters, and wattmeters.
Application Areas
Power measurement
True RMS voltmeters
Wattmeters
AC/DC conversion
Product Lifecycle
The AD637 is a mature and well-established product in Analog Devices' portfolio.
There are no indications of the product being discontinued or reaching end-of-life.
Replacement or upgrade options are available within Analog Devices' product lineup.
Key Reasons to Choose This Product
Precise and accurate RMS-to-DC conversion
Wide dynamic range and high crest factor handling
Compact and power-efficient design
Proven reliability and long-term support from Analog Devices
Compatibility with a wide range of RMS measurement applications
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