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Description:120 MHz, 50 dB Demodulating Logarithmic Amplifier
Manufacturer:Analog Devices
Datasheet:PDF (278K).
Click here to download *)

The logarithmic response is absolutely calibrated to within 1 dB for dc or square wave inputs from 0.75 mV to 200 mV, with an intercept (logarithmic offset) at 1 mV dc. An integral X10 attenuator provides an alternative input range of 7.5 mV to 2 V dc. Scaling is also guaranteed for sinusoidal inputs. The AD640B is specified for the industrial temperature range of 40C to +85C and the AD640T, available processed to MILSTD-883B, for the military range of 55C to +125C. Both are available in 20-lead side-brazed ceramic DIPs or leadless chip carriers (LCC). The AD640J is specified for the commercial temperature range of 0C to +70C, and is available in both 20-lead plastic DIP (N) and PLCC (P) packages. This device is now available to Standard Military Drawing (DESC) number 5962-9095501MRA and 5962-9095501M2A.

Click here to download AD640BPZ Datasheet
Click here to download AD640BPZ Datasheet
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