AD8436ACPZ-R7

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 AD8436 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.

• Low power
• Delivers true RMS or average rectified value of AC waveform
• Fast settling at all input levels
• ±10µV ±0.25% of reading (B grade) Accuracy
• Wide dynamic input range -100µVrms to 3Vrms (8.5Vp-p) full-scale input range
• Wide dynamic input range -larger inputs with external scaling
• Zero converter DC output offset
• No residual switching products
• Specified at 300mVrms input
• Accurate conversion with crest factors up to 10
• 300µA typical at ±2.4V Low power
• High-Z FET separately powered input buffer
• Precision DC output buffer