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
By Analog Devices, Inc.
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