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Partname:AD650JP
Description:Voltage-to-frequency and frequency-to-voltage converter, gain tempco ppm/C 100 kHz 150 typ, 1 MHz linearity 0.1% typ
Manufacturer:Analog Devices
Package:PLCC
Pins:20
Oper. temp.:0 to 70
Datasheet:PDF (434K).
Click here to download *)

The AD650 V/F/V (voltage-to-frequency or frequency-to-voltage converter) provides a combination of high frequency operation and low nonlinearity previously unavailable in monolithic form. The inherent monotonicity of the V/F transfer function makes the AD650 useful as a high-resolution analog-to-digital converter. A flexible input configuration allows a wide variety of input voltage and current formats to be used, and an open-collector output with separate digital ground allows simple interfacing to either standard logic families or opto-couplers. The linearity error of the AD650 is typically 20 ppm (0.002% of full scale) and 50 ppm (0.005%) maximum at 10 kHz full scale. This corresponds to approximately 14-bit linearity in an analog-to-digital converter circuit. Higher full-scale frequencies or longer count intervals can be used for higher resolution conversions. The AD650 has a useful dynamic range of six decades allowing extremely high resolution measurements. Even at 1 MHz full scale, linearity is guaranteed less than 1000 ppm (0.1%) on the AD650KN, KP, BD and SD grades. In addition to analog-to-digital conversion, the AD650 can be used in isolated analog signal transmission applications, phased locked-loop circuits, and precision stepper motor speed controllers. In the F/V mode, the AD650 can be used in precision tachometer and FM demodulator circuits. The input signal range and full-scale output frequency are userprogrammable with two external capacitors and one resistor. Input offset voltage can be trimmed to zero with an external potentiometer.

Click here to download AD650JP Datasheet
Click here to download AD650JP Datasheet
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