ADVFC32 Low Cost Monolithic Voltage-to-Frequency (V/F) Converter

The industry standard ADVFC32 is a low cost monolithic voltage-to-frequency (V/F) converter or frequency-to-voltage (F/V) converter with good linearity (0.01% max error at 10 kHz) and operating frequency up to 0.5 MHz. In the V/F configuration, positive or negative input voltages or currents can be converted to a proportional frequency using only a few external components. For F/V conversion, the same components are used with a simple biasing network to accommodate a wide range of input logic levels.

TTL or CMOS compatibility is achieved in the V/F operating mode using an open collector frequency output. The pullup resistor can be connected to voltages up to 30 volts, or to +15 V or +5 V for conventional CMOS or TTL logic levels. This resistor should be chosen to limit current through the open collector output to 8 mA. A larger resistance can be used if driving a high impedance load.

Input offset drift is only 3ppm of full scale per °C, and full-scale calibration drift is held to a maximum of 100 ppm/°C (ADVFC32BH) due to a low T.C. Zener diode.

The ADVFC32 is available in commercial, industrial, and extended temperature grades. The commercial grade is packaged in a 14-pin plastic DIP while the two wider temperature range parts are packaged in hermetically sealed TO-100 cans.

Features and Benefits
  • High Linearity
    ±0.01%Max at 10 kHz FS
    ±0.05%Max at 100 kHz FS
    ±0.2%Max at 500 kHz FS
  • Output TTL/CMOS-Compatible
  • V/F or F/V Conversion
  • 6 Decade Dynamic Range
  • Voltage or Current Input
  • Reliable Monolithic Construction
  • MIL-STD-883-Compliant Versions Available
Analog to Digital Converters
Data Sheets
Documentnote
ADVFC32: Low Cost Monolithic V/F Converter or F/V Converter Data Sheet (Rev. B)PDF 343 kB
Application Notes
Documentnote
AN-276: Analog to Digital Conversion by Using V/F ConvertersPDF 646 kB
Frequently Asked Questions
Documentnote
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
ADVFC32BH ProductionROUND HEADER/METAL CANOTH 100-25 to 85C9.658.23N
ADVFC32KN Production14 ld PDIPOTH 250 to 70C9.117.76N
ADVFC32KN/+ Last Time Buy14 ld PDIPOTH 25-25 to 85C9.489.48N
ADVFC32KNZ Production14 ld PDIPOTH 250 to 70C8.567.27Y
ADVFC32SH ProductionROUND HEADER/METAL CANOTH 100-55 to 125C14.4312.28N
ADVFC32SH/883B ProductionROUND HEADER/METAL CANOTH 100-55 to 125C30.5125.42N
ADVFC32: Low Cost Monolithic V/F Converter or F/V Converter Data Sheet (Rev. B) advfc32
AN-276: Analog to Digital Conversion by Using V/F Converters ad537