ADVFC32KN

Overview

The ADVFC32KN is a monolithic voltage-to-frequency and frequency-to-voltage converter manufactured by Analog Devices Inc. It operates with a maximum full-scale frequency of 500 kHz and offers high linearity, specified at ±0.01% max error at 10 kHz and ±0.05% max error at 100 kHz. The device supports a six-decade dynamic range and accepts either voltage or current inputs. It features an open-collector output compatible with TTL or CMOS logic levels, allowing pull-up voltages up to 30 V. The component is housed in a 14-lead plastic DIP package and is designed for commercial temperature grades.

Feature Summary

• Utilizes charge balancing circuit technique for high accuracy voltage-to-frequency conversion
• Features open collector output compatible with TTL or CMOS logic levels
• Supports both unipolar and bipolar input configurations via external resistor networks
• Designed as a pin-for-pin replacement for VFC32 devices from other manufacturers

Applications

• Microprocessor operated analog-to-digital converter front ends
• High noise immunity analog data links using optocouplers
• Industrial process control systems requiring precise signal conditioning
• Remote sensing applications transmitting signals through noisy environments

Procurement Notes

Verify the specific suffix KN indicates the commercial grade plastic DIP package. Confirm the part status as discontinued or obsolete before finalizing design-in decisions. Check for available military-grade alternatives such as the ADVFC32BH or ADVFC32SH if extended temperature ranges or hermetic sealing are required. Ensure ESD precautions are observed during handling due to device sensitivity.

Selection Notes

Select this component when high linearity and wide dynamic range are critical for system performance. Consider the ADVFC32KN for applications requiring direct interface with microprocessors or digital logic without additional level shifting. Evaluate the need for external calibration components to compensate for gain and offset errors. Assess whether the commercial temperature range meets the operational environment requirements.

Part Context

The ADVFC32 series represents industry-standard monolithic converters known for reliable performance in signal processing applications. The KN variant specifically denotes the commercial grade version packaged in a standard 14-lead plastic dual in-line format. This packaging facilitates easy integration into printed circuit boards for general-purpose industrial and commercial electronic equipment.

Replacement Considerations

The datasheet identifies the ADVFC32 as a pin-for-pin replacement for VFC32 devices from other manufacturers. Verify electrical specifications match between legacy parts and the ADVFC32KN to ensure compatibility.