ADI ADVFC32SH/883B

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 pull-up 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 3 ppm of full scale per °C, and fullscale 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-lead plastic DIP while the two wider temperature range parts are packaged in hermetically sealed 10-lead cans.

• 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