AD637JR

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The AD637JR is a specially designed monolithic, bipolar, rms-to-dc converter integrated circuit. It was designed for the conversion of ac signals, such as sinusoidal, trapezoidal, and rectified sine waveforms into their dc equivalent. It is primarily used in applications which require high accuracy, low power dissipation, wide bandwidth, and low cost. It is also well suited for applications in systems operating from batteries or other low power sources.

The AD637JR works by measuring ac input signals across a resistor network and converting them to dc outputs. The rms-to-dc conversion is done by measuring the rms value of the ac input signals and then converting it to the corresponding dc value through a series of switchable amplifiers. The amplifier is then switched between the low and the high gain setting according to the input signal, with half-waves of internal clock rate converted before and after the amplifier, resulting in an accurate dc output. This is accomplished through the use of capacitors and transistors.

The AD637JR is capable of measuring signals ranging from 0 mV to as high as 40V. It has a conversion rate of up to 50 kHz, and can handle input frequencies up to 10MHz. It also has an integrated surge protection feature, which provides protection against voltage spikes on the input signals. In addition, it has a low power dissipation, with its typical power dissipation of only 6.5 mW.

The AD637JR is primarily used in applications such as smart meters, analog-to-digital converters, data acquisition systems, electronic metering systems, and power amplifiers. It can also be used in applications such as instrumentation, automotive systems, and industrial control systems. Furthermore, it is an excellent choice for use in portable applications, as it has a low voltage operation of 3V to 5.5V, and a low power operation of 0.6 mA to 6.5 mW.

In conclusion, the AD637JR is an excellent choice for applications that require rms-to-dc conversion. It has excellent accuracy, wide bandwidth, low power dissipation, and low cost. It is ideal for use in applications such as smart meters, analog-to-digital converters, data acquisition systems, electronic metering systems, power amplifiers, instrumentation, automotive systems, industrial control systems, and portable applications.

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