RFVoltage to Frequency Converter Manufacturers and Vendors
This page provides information about voltage to frequency converter manufacturers and vendors.
The popular manufacturers of Voltage to frequency converter ICs include Analog Devices, National Semiconductor, Texas Instruments, Fairchild Semiconductor, Microchip, Nexperia, MaxLinear Inc., etc.
Introduction
The VFC (Voltage to Frequency Converter) is an oscillator circuit where the output frequency is proportional to the input voltage. It has wide applications, including automotive, instrumentation, test and measurement, industrial and automation, communication systems, etc. In telecommunication systems, it is used in PLL (Phase Locked Loop), FM (Frequency Modulation), and Frequency Synthesizers. The most common ICs used for frequency to voltage conversion are the LM331 and NE555.
It is also known as VCO (Voltage Controlled Oscillator).
Following are the typical specifications of a Voltage to Frequency Converter (VFC):
- Input type: single-ended/Differential
- Voltage input range
- Output frequency range
- Linearity (% Max.)
- Supply current (Amp.)
- Supply voltage range
- Package type (DIP, SOIC)
Voltage to Frequency Converter Vendors or Manufacturers
The following table mentions vendors or manufacturers of Voltage to Frequency Converter ICs.
| Manufacturers | Part number with features |
|---|---|
| Analog Devices | Synchronous VFCs part numbers: AD7740, AD7741, AD7742 Non-synchronous VFCs part numbers: ADVFC32, AD537, AD650, AD652, AD654 Features: Above VFCs support different output frequencies at different input voltages with different accuracies. Visit analog.com for information. |
| National Semiconductor (Acquired by Texas Instruments) | Part numbers LM231/LM331 are voltage to frequency converters, whereas part number LM2917N8 is a frequency to voltage converter. Visit ti.com for more information. |
| Texas Instruments | Part numbers of voltage to frequency converter ICs are VFC32, VFC100, VFC110, VFC121, VFC320 etc. Features of VFC32: Output up to 500 KHz, Input Voltage (0V to -10V) etc. Visit ti.com for more information. |
| Fairchild Semiconductor (Acquired by ON Semiconductor) | Part number: KA331 Features: The part is obsolete now. Visit onsemi.com for more information. |
| Microchip Technology Inc. | Part numbers: TC9400, TC9401, TC9402 Features: DC to 100 KHz (F/V converter), 1 Hz to 100 KHz (V/F converter), Linearity (%): 0.01 (in TC9401), 0.05 (in TC9400), 0.25 (in TC9402), low power dissipation, etc. Visit microchip.com for more information. |
| Nexperia | Part number: HEF4046B (PLL IC) with voltage range from 3 to 15 V, Max. frequency from 1.0 MHz to 2.7 MHz (Typically) Refer nexperia.com for more information. |
| MaxLinear Inc. | Part number: XR4151CP functions as V2F and F2V, available in 8 pin PDIP package Refer maxlinear.com for more information. |
