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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Description Price 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
RS Stock No. 522-8225
Mfr. Part No.AD654JRZ
PHP533.03
Each
units
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
RS Stock No. 912-8992
Mfr. Part No.AD654JRZ
PHP493.935
Each (In a Tube of 98)
units
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
RS Stock No. 161-0615
Mfr. Part No.AD7740KRMZ
PHP114.119
Each (In a Tube of 50)
units
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 +85 °C
RS Stock No. 497-3362
Mfr. Part No.AD7740KRMZ
PHP134.564
Each (In a Pack of 5)
units
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 +85 °C
RS Stock No. 121-9286
Mfr. Part No.LM331AN/NOPB
PHP416.515
Each (In a Tube of 40)
units
VFC - 100kHz 0.01% Single 5 V - Through Hole PDIP 8 10.16 x 6.35 x 3.302mm 3.302mm 10.16mm +70 °C
RS Stock No. 761-4603
Mfr. Part No.LM331AN/NOPB
PHP483.58
Each
units
VFC - 100kHz 0.01% Single 5 V - Through Hole PDIP 8 10.16 x 6.35 x 3.302mm 3.302mm 10.16mm +70 °C
RS Stock No. 121-8693
Mfr. Part No.LM331N/NOPB
PHP190.162
Each (In a Tube of 40)
units
VFC - 100kHz ±0.14%FSR Single 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - Through Hole MDIP 8 9.27 x 6.35 x 3.3mm 3.3mm 9.27mm +70 °C
RS Stock No. 533-5755
Mfr. Part No.LM331N/NOPB
PHP221.58
Each
units
VFC - 100kHz ±0.14%FSR Single 12 V, 15 V, 18 V, 24 V, 28 V, 5 V, 9 V - Through Hole MDIP 8 9.27 x 6.35 x 3.3mm 3.3mm 9.27mm +70 °C
RS Stock No. 460-948
Mfr. Part No.LM2917N/NOPB
PHP101.284
Each (In a Pack of 5)
units
FVC - - ±1%FSR Single 12 V - Through Hole MDIP 14 19.05 x 6.35 x 3.3mm 3.3mm 19.05mm +85 °C
RS Stock No. 533-3074
Mfr. Part No.LM231N/NOPB
PHP285.72
Each
units
VFC - 100kHz ±0.14%FSR Single 12 V, 15 V, 18 V, 24 V, 28 V, 5 V, 9 V - Through Hole MDIP 8 9.27 x 6.35 x 3.3mm 3.3mm 9.27mm +85 °C
RS Stock No. 121-8681
Mfr. Part No.LM231N/NOPB
PHP246.345
Each (In a Tube of 40)
units
VFC - 100kHz ±0.14%FSR Single 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - Through Hole MDIP 8 9.27 x 6.35 x 3.3mm 3.3mm 9.27mm +85 °C
RS Stock No. 100-0723
Mfr. Part No.LM2917N/NOPB
PHP93.13
Each (In a Tube of 25)
units
FVC - - ±1%FSR Single 12 V - Through Hole MDIP 14 19.05 x 6.35 x 3.3mm 3.3mm 19.05mm +85 °C
RS Stock No. 159-7769
Mfr. Part No.AD650JPZ
PHP1,428.61
Each (In a Tube of 49)
units
FVC, VFC Non-Synchronous 1000kHz ±0.05%FSR Dual - ±12 V, ±15 V Surface Mount PLCC 20 9.04 x 9.04 x 3.68mm 3.68mm 9.04mm +70 °C
RS Stock No. 264-951
Mfr. Part No.TC9400CPD
BrandMicrochip
PHP367.56
Each
units
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
RS Stock No. 759-0907
Mfr. Part No.AD652AQ
PHP1,704.96
Each
units
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
RS Stock No. 709-5487
Mfr. Part No.AD652JPZ
PHP1,603.85
Each
units
VFC Synchronous 2000kHz ±0.05%FSR Dual, Single 15 V, 18 V, 24 V ±15V Surface Mount PLCC 20 9.04 x 9.04 x 3.68mm 3.68mm 9.04mm +70 °C
RS Stock No. 538-4218
Mfr. Part No.ADVFC32KNZ
PHP1,050.21
Each
units
FVC, VFC Non-Synchronous 500kHz ±0.2%FSR Dual - ±15V Through Hole PDIP 14 19.05 x 6.35 x 3.3mm 3.3mm 19.05mm +70 °C
RS Stock No. 460-944
Mfr. Part No.LM2917N-8/NOPB
PHP110.334
Each (In a Pack of 5)
units
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
RS Stock No. 158-1945
Mfr. Part No.AD537JH
PHP1,222.552
Each (In a Box of 100)
units
VFC Non-Synchronous 150kHz ±0.25%FSR Dual, Single 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V ±12 V, ±15 V, ±9 V Through Hole TO-100 10 9.4 x 9.4 x 4.7mm 4.7mm 9.4mm +70 °C
RS Stock No. 923-3681
Mfr. Part No.VFC32KP
PHP609.00
Each (In a Tube of 25)
units
FVC, VFC - 100kHz ±0.05%FSR Dual - ±15V Through Hole PDIP 14 19.3 x 6.35 x 4.57mm 4.57mm 19.3mm +70 °C
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Description:
National Semiconductor's economic Voltage to Frequency converters feature low power consumption and a wide dynamic range, and are ideal for analogue-to-digital conversion applications.Also available in this range are Frequency to Voltage converters that are well suited to applications such as ...
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Description:
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This voltage to frequency converter features excellent linearity ...
Description:
This voltage to frequency converter features excellent linearity and either voltage or current input, providing an option between either voltage-to-frequency or frequency-to-voltage conversion. This device is typically used in applications such as isolated data transmission or motor speed control.