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Series Information for AD650KNZ - Analog Devices


  • feature
    V/F conversion to 1 MHz Reliable monolithic construction Very low nonlinearity 0.002% typ at 10 kHz 0.005% typ at 100 kHz 0.07% typ at 1 MHz Input offset trimmable to zero CMOS- or TTL-compatible Unipolar, bipolar, or differential V/F V/F or F/V conversion Available in surface mount MIL-STD-883 compliant versions available



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, 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 user- programmable with two external capacitors and one resistor. Input offset voltage can be trimmed to zero with an external potentiometer. The AD650JN and AD650KN are offered in plastic 14-lead DIP packages. The AD650JP is available in a 20-lead plastic leaded chip carrier (PLCC). Both plastic packaged versions of the AD650 are specified for the commercial temperature range (0°C to 70°C). For industrial temperature range (−25°C to +85°C) applications, the AD650AD and AD650BD are offered in ceramic packages. The AD650SD is specified for the full −55°C to +125°C extended temperature range.


Full Scale Range:
0Hz to 1MHz
Linearity %:
Supply Voltage Range:
± 9V to ± 18V
Digital IC Case:
No. of Pins:
Product Range:
AD650 Series
RoHS Phthalates Compliant:
No SVHC (07-Jul-2017)
Base Number:
Converter Type:
Frequency / Voltage + Voltage / Frequency
Input Voltage Max:
Operating Temperature Max:
Operating Temperature Min:
Operating Temperature Range:
0°C to +70°C
Output Voltage Max:
Supply Current:
Supply Voltage Max:
Supply Voltage Min:
Termination Type:
Through Hole

Alternate Descriptions

RS Components
VFC/FVC Non-Sync 1MHz 14-Pin PDIP N
RS Components UK
VFC/FVC Non-Sync 1MHz 14-Pin PDIP N
RS Components DE
Spannung/Frequenz Wandler AD650KNZ, Nicht-Synchron 1000kHz ±0.1%FSR PDIP, 14-Pin Wandler-Funktion : FVC, VFC Stromversorgungs-Typ : Dual Versorgungsspannung bipolar typ. : ±12 V, ±15 V Montage-Typ : Durchsteckmontage Abmessungen : 19.05 x 6.35 x 3.3mm Länge : 19.05mm Betriebstemperatur max. : +70 °C Breite : 6.35mm, Analog Devices
RS Components HK
VFC/FVC Non-Sync 1MHz 14-Pin PDIP N
RS Components JP
VFC/FVC Non-Sync 1MHz 14-Pin PDIP N
RS Components FR
Convertisseur non synchrone 1MHz DIPN-14
RS Components CN
VFC/FVC Non-Sync 1MHz 14-Pin PDIP N
RS Components ES
VFC/FVC Non-Sync 1MHz 14-Pin PDIP N
RS Components NL
VFC/FVC Non-Sync 1MHz 14-Pin PDIP N
RS Components NO
VFC/FVC Non-Sync 1MHz 14-Pin PDIP N
RS Components US
VFC/FVC Non-Sync 1MHz 14-Pin PDIP N
RS Components SG
VFC/FVC Non-Sync 1MHz 14-Pin PDIP N
RS Components TW
VFC/FVC Non-Sync 1MHz 14-Pin PDIP N