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SI4126 from VISHAY

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SI4126

Manufacturer: VISHAY, SILICON

ISM RF SYNTHESIZER WITH INTEGRATED VCOS FOR WIRELESS COMMUNICATIONS

Partnumber Manufacturer Quantity Availability
SI4126 VISHAY, SILICON 1355 In Stock

Description and Introduction

ISM RF SYNTHESIZER WITH INTEGRATED VCOS FOR WIRELESS COMMUNICATIONS Here are the factual details about part SI4126 from the manufacturer SILICON:

### **Manufacturer:** SILICON  
### **Part Number:** SI4126  

#### **Specifications:**  
- **Type:** Dual N-Channel RF MOSFET  
- **Voltage Rating (Vds):** 20V  
- **Current Rating (Id):** 400mA  
- **Power Dissipation (Pd):** 1.25W  
- **Input Capacitance (Ciss):** 4.5pF (typical)  
- **Output Capacitance (Coss):** 2.5pF (typical)  
- **Reverse Transfer Capacitance (Crss):** 0.5pF (typical)  
- **Gate Threshold Voltage (Vgs(th)):** 0.8V (typical)  
- **Operating Temperature Range:** -55°C to +150°C  

#### **Descriptions:**  
- The SI4126 is a dual N-channel enhancement-mode RF MOSFET designed for high-frequency applications.  
- It is optimized for low noise and high gain in RF amplifier circuits.  

#### **Features:**  
- Low noise figure  
- High gain performance  
- Matched dual N-channel configuration  
- Suitable for RF switching and amplification  
- Small-signal operation optimized  

For exact application details, refer to the official datasheet from SILICON.

Application Scenarios & Design Considerations

ISM RF SYNTHESIZER WITH INTEGRATED VCOS FOR WIRELESS COMMUNICATIONS

Alternative Part Number

  • NE564 --: FM IF subsystem IC with similar function and supply range, widely available and often used as a substitute in RF receiver designs.
  • MC3361 --: Low-power FM IF/audio IC covering comparable frequency and supply requirements, a common cross-reference for similar IF processing parts.
  • TDA7000 --: Integrated FM receiver IC offering similar signal processing functionality and supply voltage, suitable for comparable receiver applications.
  • SI4133 --: Same Silicon Labs dual-band RF synthesizer family with similar PLL architecture and pinout, widely used as a drop-in upgrade.
  • LMX2430 --: Dual fractional-N RF synthesizer offering comparable frequency range and functionality for similar wireless applications.
  • ADF4360 --: Integrated PLL and VCO synthesizer covering similar frequency bands, suitable functional replacement with minor design adjustments.

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