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SI4840BDY from VISHAY

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SI4840BDY

Manufacturer: VISHAY, SILICONI

N-Channel 40-V (D-S) MOSFET

Partnumber Manufacturer Quantity Availability
SI4840BDY VISHAY, SILICONI 10047 In Stock

Description and Introduction

N-Channel 40-V (D-S) MOSFET The SI4840BDY is a digital CMOS AM/FM/SW radio receiver IC manufactured by Silicon Labs (SILICONI).  

### **Specifications:**  
- **Frequency Range:**  
  - AM: 520–1710 kHz  
  - FM: 64–108 MHz  
  - SW: 2.3–30 MHz (shortwave)  
- **Supply Voltage:** 2.7–5.5V  
- **Current Consumption:**  
  - AM: ~26 mA  
  - FM: ~23 mA  
- **Interface:** I²C (2-wire serial)  
- **Audio Output:** Stereo (FM), Mono (AM/SW)  
- **Tuning Steps:**  
  - AM: 1/9/10 kHz  
  - FM: 50/100 kHz  
  - SW: 5 kHz  
- **Signal-to-Noise Ratio (SNR):**  
  - FM: ≥ 60 dB  
  - AM: ≥ 50 dB  
- **Package:** 24-pin SSOP  

### **Descriptions and Features:**  
- **Digital Tuning:** Supports AM, FM, and shortwave bands with automatic and manual tuning.  
- **Low Power Consumption:** Suitable for battery-powered portable devices.  
- **Integrated DSP:** Digital signal processing for improved reception and noise reduction.  
- **RDS Support (FM):** Decodes Radio Data System information (if enabled).  
- **Automatic Gain Control (AGC):** Optimizes signal strength for better audio quality.  
- **No External IF Filters Required:** Simplifies design and reduces BOM cost.  
- **Wide Operating Voltage:** Compatible with 3V and 5V systems.  
- **Small Form Factor:** 24-pin SSOP package for compact designs.  

This IC is commonly used in portable radios, car audio systems, and other consumer electronics requiring AM/FM/SW reception.

Application Scenarios & Design Considerations

N-Channel 40-V (D-S) MOSFET

Alternative Part Number

  • FDS6680A --: N-channel MOSFET with comparable 30V rating and low on-resistance in SO-8 package, suitable drop-in replacement for switching applications.
  • IRF7413Z --: 30V N-channel MOSFET in SO-8 with similar RDS(on) and current capability, widely available alternative.
  • AO4406A --: 30V N-channel MOSFET in SO-8 with low gate charge and comparable ratings, cost-effective substitute.
  • AO4406 --: Cost-effective N-channel MOSFET in SO-8 with comparable on-resistance and gate charge characteristics.

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For immediate assistance, call us at +86 533 2716050 or email [email protected]

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