ADI AD8436ACPZ-R7

325 µA±2.4V ~ 18V，4.8V ~ 36V表面贴装型

Overview

The AD8436ACPZ-R7 is a new generation translinear precision true RMS-to-DC Converter loaded with options. It computes a precise DC equivalent of the RMS value of 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 ensured accuracy of <=±0.5% and <=10µV output offset result from the latest Analogue Devices, Inc., technology. The crest factor error is <0.5% for CF values between 1 and 10. The AD8436ACPZ-R7 delivers true RMS results at 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.

Features

• 65kHz for additional 1% error

• -3dB bandwidth is 1MHz at (300mV)

• Operating temperature is -40°C to +125°C

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

• Packaging style is 20-lead lead frame chip scale [LFCSP]

• Supply current is 325µA typ at (no input), ESD protected

• Zero converter DC output offset, no residual switching products

• Accuracy is ±10µV ±0.5% of reading, larger inputs with external scaling

• Power supply voltage range is ±2.4V to ±18V (dual), 4.8V to 36V (single)

• Specified at 300mV rms input, accurate conversion with crest factors up to 10

Applications

• Industrial

• Automotive

• Enterprise systems