AD8436

低成本，低功耗 Low Cost, Low Power

The is a new generation, translinear precision, low power, true rms to dc converter that is loaded with options. It computes a precise dc equivalent of the rms value ac waveforms, including complex patterns such as those generated by switch mode power supplies and triacs. Its accuracy spans a wide range of input levels and temperatures. The AD8436 delivers instant true rms results for less cost than misleading peak, averaging, or digital solutions. On-board buffer amplifiers enable the widest range of options for any rms to dc converter available, regardless of cost. For minimal applications, only a single external averaging capacitor is required. The built in high impedance FET buffer provides an interface for external attenuators, frequency compensation, or driving low impedance loads.

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Delivers true rms or average rectified value of an ac waveform

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Fast settling at all input levels

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100 µV rms to 3 V rms 8.5 V p-p full-scale input range

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Wide bandwidth: 1 MHz for -3 dB 300 mV

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Zero converter dc output offset

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No residual switching products

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Specified at 300 mV rms input

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Accurate conversion with crest factors up to 10

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High Z FET separately powered input buffer

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Precision dc output buffer