22 Hz–20 kHz PWM to 0–5 V / 0–10 V Voltage Frequency Converter Module

**Voltage–Frequency Converter Module (22 Hz – 20 kHz)**  

This compact board converts PWM or frequency input signals into a proportional analog voltage output (0–5 V or 0–10 V). Ideal for microcontroller, PLC, and industrial automation interfaces where frequency-to-voltage translation is required.  

**⚙️ Features**  
• Converts 22 Hz – 20 kHz input to 0–5 V or 0–10 V analog output  
• Accepts 3.3 V – 24 V logic-level PWM signals  
• Supply voltage: 3.3 V – 12 V DC  
• Output error: ± 1.2 % (22 Hz – 20 kHz)  
• Compact 33 × 33 mm PCB with M3 mounting holes  
• High stability and fast response for signal conversion applications  

**🔌 Pin Definition**  
| Pin | Description |  
|:--:|:--|  
| VIN | Power input (3.3 V – 12 V) |  
| GND | Power ground |  
| PWM IN | PWM or frequency signal input |  
| OUT | Analog voltage output (0–5 V / 0–10 V) |  

**📦 Specifications**  
• Input Signal Level: 3.3 V – 24 V logic  
• Input Frequency: 22 Hz – 20 kHz  
• Output Level: 0 – 5 V / 0 – 10 V  
• Working Current: 9.5 – 21.5 mA (no load)  
• Isolation: No  
• Mounting: M3 screws  

**🧰 Applications**  
• MCU / Arduino PWM to analog conversion  
• PLC and sensor signal interfacing  
• Motor speed and dimmer control  
• Frequency measurement feedback loops