You are here

AN2161 - PSoC® 1 Analog - Voltage-to-Frequency Converter | サイプレス セミコンダクタ

AN2161 - PSoC® 1 Analog - Voltage-to-Frequency Converter

2020 年 6 月 26 日
AN2161 describes two methods for implementing a continuous time (CT) voltage-to-frequency (V/F) converter using the PSoC®1 device. Both methods are implemented in hardware, and the CPU is not used during the operation.

Voltage-to-frequency (V/F) converters are widely used in industrial electronics, frequency-shift keying modulators, phase-locked loop systems, analog-to-digital converters, isolation amplifiers, etc. Even though these converters are produced as standalone devices, they still require several external components and are relatively expensive in comparison to modern low-cost analog integrated circuits. The PSoC allows the designer to build the V/F using only one continues continuous time (CT) analog block (configured as schmitt trigger) and one switched capacitor (SC) analog block (configured as integrator), without any external analog components. All digital blocks, and the CPU, are at user disposal. The designer will get a useful device function with virtually no additional cost or extra components. Moreover, the proposed V/F converter produces both meander and symmetric sawtooth signals, which are useful for some applications such as analog PWM modulators and capacitance meters.

 PSoC 1 Analog Voltage to Frequency Diagram

サポートされているハードウェアとソフトウェア サポートされているPSoC 1デバイス
PSoC Designerバージョン











CY3250 Pod with external board        

x23A, x94 


Dear valued customer,

Thank you for choosing our products. They come with all the know-how and passion that our engineers have put into it. As you probably already know, Cypress is now Infineon. This is a major step for our company, but also for the good of you. 

Reliability and business continuity are of utmost importance for us. Hence, we remain fully committed to honoring existing customer and distributor relationships. This includes offering the legacy Cypress product portfolio. We thank you very much for your trusting support.

For the full version of this message, please download the PDF version.