ADVFC32SH

Overview

The ADVFC32SH is a monolithic voltage-to-frequency and frequency-to-voltage converter manufactured by Analog Devices. It operates with a full-scale frequency range up to 500 kHz and offers high linearity, specified at ±0.2% maximum error at the upper frequency limit. The device supports both unipolar and bipolar input configurations and features an open-collector output compatible with TTL or CMOS logic levels. It is housed in a hermetically sealed TO-100 package with 10 pins, designed for extended temperature operation ranging from -55 °C to +125 °C.

Feature Summary

• Utilizes charge balancing circuit technique for high accuracy conversion
• Features open collector output compatible with standard logic families
• Supports flexible input scaling via external resistor selection
• Designed as a pin-for-pin replacement for legacy VFC32 devices

Applications

• Microprocessor operated analog-to-digital converter front ends
• High noise immunity analog data links using optocouplers
• Industrial automation signal conditioning
• Process control systems requiring precise frequency modulation

Procurement Notes

Verify that the specific part number matches the required temperature grade and package type. Confirm that the TO-100 hermetic seal meets environmental specifications for the intended application. Ensure proper electrostatic discharge precautions are implemented during handling due to device sensitivity. Cross-reference ordering guides for any military screening requirements if applicable.

Selection Notes

Select this component when extended temperature performance is required alongside high linearity. The TO-100 package provides hermetic sealing suitable for harsh environments. Consider the ±150 ppm/°C full-scale calibration drift specification when designing for precision over wide thermal ranges. Verify that the 500 kHz maximum frequency aligns with system bandwidth requirements.

Part Context

The ADVFC32 series represents industry-standard voltage-to-frequency converters known for low cost and reliable monolithic construction. The SH suffix specifically denotes the version packaged in a TO-100 metal can, offering extended temperature capabilities compared to commercial plastic DIP variants. This family is widely recognized for its compatibility with existing designs utilizing older VFC32 components.

Replacement Considerations

The datasheet identifies the ADVFC32 as a pin-for-pin replacement for VFC32 devices from other manufacturers. Verify pinout compatibility and electrical specifications against legacy parts before substitution.