Voltage-to-Frequency & Frequency-to-Voltage Converters

Converters are electrical devices that can you can use to change the frequency and voltage of a power source.
A VFC (voltage to frequency converter) is an oscillator with a frequency that is linearly proportional to a control voltage and consumes a very small amount of power.
An FVC (frequency to voltage converter) is an electronic device that converts current signal inputs to corresponding voltage outputs. They use analogue and digital channels.

What are voltage to frequency converters and frequency to voltage converters used for?
Voltage to frequency converters are typical components in analogue-to-digital conversion applications of engines, telecommunication devices and automotive components.
Frequency to voltage converters are suitable for speed governors, tachometers, timers, encoders and switches.

Types of voltage to frequency converters and frequency to voltage converters
VFCs come with either single or integrated circuit adaptations. Single circuit converters consist of analogue voltage amplifiers, oscillator circuits, resistors, capacitors and driving power supplies.
FVCs have integral, low pass or programmable filtering capabilities. Integral filters allow some signal frequencies through, but bar others. Low pass filters have a set threshold. Signals below the threshold are allowed to pass, while signals above are blocked.
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Part Details Brand Converter Function Converter Type Full Scale Frequency Linearity Error Power Supply Type Typical Single Supply Voltage Typical Dual Supply Voltage Mounting Type Package Type Pin Count Dimensions Height Length Maximum Operating Temperature Width Minimum Operating Temperature
TC9400COD, Voltage-to-Frequency Converter, Voltage, 100kHz 0.05 %FSR @ 10 kHz, 14-Pin SOIC Microchip Technology - Voltage 100kHz 0.05 %FSR @ 10 kHz Single 8 → 15 V ±4 to ±7.5V Surface Mount SOIC 14 8.65 x 3.9 x 1.5mm 1.5mm 8.65mm +70 °C 3.9mm 0 °C
TC9400COD, Voltage-to-Frequency Converter, Voltage, 100kHz 0.05 %FSR @ 10 kHz, 14-Pin SOIC Microchip Technology - Voltage 100kHz 0.05 %FSR @ 10 kHz Single 8 → 15 V ±4 to ±7.5V Surface Mount SOIC 14 8.65 x 3.9 x 1.5mm 1.5mm 8.65mm +70 °C 3.9mm 0 °C
VIPER115XSTR, Voltage - Frequency Converters, Voltage, , 10-Pin SSOP
  • £ 0.343
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STMicroelectronics - Voltage - - Single 4.5 → 30 V - Surface Mount SSOP 10 5 x 4 x 1.5mm 1.5mm 5mm +150 °C 4mm -40 °C
VIPER115LSTR, Voltage - Frequency Converters, Voltage, , 10-Pin SSOP
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STMicroelectronics - Voltage - - Single 4.5 → 30 V - Surface Mount SSOP 10 5 x 4 x 1.5mm 1.5mm 5mm +150 °C 4mm -40 °C
LM2917N-8/NOPB, Frequency to Voltage Converter, Voltage, ±1%FSR, 8-Pin MDIP Texas Instruments FVC Voltage - ±1%FSR Single 12 V - Through Hole MDIP 8 9.27 x 6.35 x 3.3mm 3.3mm 9.27mm +85 °C 6.35mm -40 °C
VIPER114LSTR, Voltage - Frequency Converters, Voltage, , 10-Pin SSOP
  • £ 0.343
  • Each (On a Reel of 2500)
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STMicroelectronics - Voltage - - Single 4.5 → 30 V - Surface Mount SSOP 10 5 x 4 x 1.5mm 1.5mm 5mm +150 °C 4mm -40 °C
LM2917N-8/NOPB, Frequency to Voltage Converter, Voltage, ±1%FSR, 8-Pin MDIP Texas Instruments FVC Voltage - ±1%FSR Single 12 V - Through Hole MDIP 8 9.27 x 6.35 x 3.3mm 3.3mm 9.27mm +85 °C 6.35mm -40 °C
AD652AQ, Voltage to Frequency Converter, Synchronous, 2000kHz 0.005% of Span, 16-Pin CERDIP Analog Devices VFC Synchronous 2000kHz 0.005% of Span Dual, Single 12 → 36 V ±15V Through Hole CERDIP 16 21.34 x 7.87 x 3.56mm 3.56mm 21.34mm +85 °C 7.87mm -40 °C
LM2917N/NOPB, Frequency to Voltage Converter ±1%FSR, 14-Pin MDIP Texas Instruments FVC - - ±1%FSR Single 12 V - Through Hole MDIP 14 19.05 x 6.35 x 3.3mm 3.3mm 19.05mm +85 °C 6.35mm -40 °C
Voltage to Frequency Converter 100kHz ±0.25%FSR, 14-Pin PDIP Microchip FVC, VFC - 100kHz ±0.25%FSR Dual, Single 9 V, 12 V ±5V Through Hole PDIP 14 19.05 x 6.35 x 3.3mm 3.3mm 19.05mm +70 °C 6.35mm 0 °C
AD7741YRZ, Voltage to Frequency Converter, Synchronous, 1350kHz ±0.024% of Span, 8-Pin SOIC Analog Devices VFC Synchronous 1350kHz ±0.024% of Span Single 5 V - Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm +105 °C 4mm -40 °C
AD7741BNZ, Voltage to Frequency Converter, Synchronous, 1350kHz ±0.024% of Span, 8-Pin PDIP Analog Devices VFC Synchronous 1350kHz ±0.024% of Span Single 5 V - Through Hole PDIP 8 9.27 x 7.24 x 3.43mm 3.43mm 9.27mm +85 °C 7.24mm -40 °C
AD654JNZ, Voltage to Frequency Converter, Non-Synchronous, 500kHz ±0.4%FSR, 8-Pin PDIP Analog Devices VFC Non-Synchronous 500kHz ±0.4%FSR Dual, Single 12 V, 15 V, 18 V, 24 V, 28 V, 5 V, 9 V ±12 V, ±15 V, ±9 V Through Hole PDIP 8 9.27 x 7.24 x 3.43mm 3.43mm 9.27mm +85 °C 7.24mm -40 °C
AD652BQ, Voltage to Frequency Converter, Synchronous, 2000kHz 0.005% of Span, 16-Pin CERDIP Analog Devices VFC Synchronous 2000kHz 0.005% of Span Dual, Single 12 → 36 V ±15V Through Hole CERDIP 16 21.34 x 7.87 x 3.56mm 3.56mm 21.34mm +85 °C 7.87mm -40 °C
AD654JRZ, Voltage to Frequency Converter, Non-Synchronous, 500kHz ±0.4%FSR, 8-Pin SOIC Analog Devices VFC Non-Synchronous 500kHz ±0.4%FSR Dual, Single 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V ±12 V, ±15 V, ±9 V Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm +85 °C 4mm -40 °C
AD7740YRMZ, Voltage to Frequency Converter, Synchronous, 1000kHz ±0.018% of Span, 8-Pin uSOIC Analog Devices VFC Synchronous 1000kHz ±0.018% of Span Single 3.3 V, 5 V - Surface Mount uSOIC 8 3 x 3 x 0.85mm 0.85mm 3mm +105 °C 3mm -40 °C
LM2917M-8/NOPB, Voltage to Frequency Converter ±1%FSR, 8-Pin SOIC Texas Instruments FVC - - ±1%FSR Single 12 V - Surface Mount SOIC 8 4.9 x 3.9 x 1.45mm 1.45mm 4.9mm +85 °C 3.9mm -40 °C
LM2907M/NOPB, Frequency to Voltage Converter +1%, 14-Pin SOIC Texas Instruments FVC - - +1% Single 0 → 28 V - Surface Mount SOIC 14 8.75 x 4 x 1.5mm 1.5mm 8.75mm +85 °C 4mm -40 °C
KA331, Voltage to Frequency Converter, Non-Synchronous, 100kHz, 8-Pin PDIP ON Semiconductor VFC Non-Synchronous 100kHz - Single 40 V - Through Hole PDIP 8 9.6 x 6.4 x 3.4mm 5.08mm 9.6mm +70 °C 6.4mm 0 °C
LM231AN/NOPB, Voltage to Frequency Converter 100kHz 0.01%, 8-Pin PDIP Texas Instruments VFC - 100kHz 0.01% Single 5 V - Through Hole PDIP 8 10.16 x 6.35 x 3.302mm 3.302mm 10.16mm +85 °C 6.35mm -25 °C
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