LM331N DIP-8 Precision Voltage-to-Frequency Converter IC
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Prices updated: 13 Oct 2026
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About this product
The LM331N is a precision voltage-to-frequency converter in an 8-pin DIP package. Its output is a pulse train whose frequency is proportional to the input voltage, which makes it useful for simple analog-to-digital conversion, frequency-to-voltage conversion and linear frequency modulation.
Specifications
- Function
- Voltage-to-frequency converter
- Package
- DIP-8
- Output
- Pulse train, frequency proportional to input voltage
- Family
- LMx31
Frequently asked questions
How do I set the output frequency range?
The frequency range is set by external timing components according to the formulas in the LM331 datasheet.
Can I read its output with a microcontroller?
Yes. Connect the pulse output to a digital input or timer/counter pin and measure the pulse frequency, which represents the input voltage.
