IC Integrated Circuits AD637JR SOIC-16

IC Integrated Circuits AD637JR SOIC-16

DESCRIPTION:

The AD637 is a complete, high accuracy, rms-to-dc converter that computes the true rms value of any complex waveform. It offers performance that is unprecedented in integrated circuit rms-to-dc converters and comparable to discrete and modular techniques in accuracy, bandwidth, and dynamic range. The AD637 computes the true root mean square, mean square, or absolute value of any complex ac (or ac plus dc) input waveform and gives an equivalent dc output voltage. The true rms value of a waveform is more useful than an average rectified signal because it relates directly to the power of the signal. The rms value of a statistical signal relates to the standard deviation of the signal. Superior crest factor compensation permits measurements of signals with crest factors of up to 10 with less than 1% additional error. The wide bandwidth of the AD637 permits the measurement of signals up to 600 kHz with inputs of 200 mV rms and up to 8 MHz when the input levels are above 1 V rms. Direct dB value of the rms output with a range of 60 dB is available on a separate pin. An externally programmed reference current allows the user to select the 0 dB reference voltage to correspond to any level between 0.1 V and 2.0 V rms. A chip select connection on the AD637 permits the user to decrease the supply current from 2.2 mA to 350 µA during periods when the rms function is not in use. This feature facilitates the addition of precision rms measurement to remote or handheld applications where minimum power consumption is critical. In addition, when the AD637 is powered down, the output goes to a high impedance state. This allows several AD637s to be tied together to form a wideband true rms multiplexer.

FEATURES:
 

High accuracy
0.02%% maximum nonlinearity, 0 V to 2 V rms input

0.1% additional error to crest factor of 3

Wide bandwidth
8 MHz at 2 V rms input
600 kHz at 100 mV rms
Computes
True rms
Square

Mean square

Absolute value
dB output (60 dB range)
Chip select/power-down feature allows

Analog three-state operation

Quiescent current reduction from 2.2 mA to 350 uA

Parameter Table:

FAQ:

• Whats your MOQ?

No MOQ needed, and if you buy more, will enjoy better prices.

• Can i get a free sample?

You can ask our staff for apply free samples.

• What payment methods do you support?

We provide: Visa/MasterCard/Wire Transfer/WU/MG/PayPal etc.

• What about the shipment methods?

We provide:DHL/UPS/TNT/Fedex/EMS/Aramex/ePacket etc.

• How will you Guaranteed quality?

Quality Warranty Period:12 Months.

• Are the products tested before shipment?

All products were tested before shipment, and the quality problems were negligible.

• Do you provide BOM services?

Yes, We provide one-stop purchase service, Please send us your Bom List