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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

最終更新日: 
2020 年 6 月 26 日
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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





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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

ハードウェアキット


CY8C20xxx


CY8C21xxx


CY8C22xxx


CY8C23xxx


CY8C24xxx


CY8C27xxx


CY8C28xxx


CY8C29xxx




はい




5.0
CY3250 Pod with external board        



x23A, x94 




443
   

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