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TA7641BF from TOS,TOSHIBA

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TA7641BF

Manufacturer: TOS

350mA; V(cc): 6V; 0.2A; AM 1 chip radio

Partnumber Manufacturer Quantity Availability
TA7641BF TOS 298 In Stock

Description and Introduction

350mA; V(cc): 6V; 0.2A; AM 1 chip radio The TA7641BF is an integrated circuit (IC) manufactured by Toshiba. Below are the factual details about its specifications, descriptions, and features:

### **Specifications:**
1. **Function**: AM Radio Receiver IC  
2. **Package**: SIP (Single In-line Package)  
3. **Operating Voltage**: 1.5V to 3V (low-voltage operation)  
4. **Current Consumption**: Approximately 1.5mA (low power consumption)  
5. **Frequency Range**: Designed for AM broadcast band (typically 530kHz–1600kHz)  
6. **Gain**: High sensitivity with built-in RF amplifier, mixer, oscillator, IF amplifier, detector, and AGC (Automatic Gain Control)  
7. **Output**: Directly drives headphones or small speakers  

### **Descriptions:**
- The TA7641BF is a monolithic AM radio receiver IC, integrating all necessary functions for a simple AM radio circuit.  
- It is widely used in pocket-sized and portable AM radios due to its low power consumption and minimal external component requirements.  
- The IC includes an internal AGC circuit to stabilize reception under varying signal conditions.  

### **Features:**
1. **All-in-One Design**: Combines RF, mixer, oscillator, IF amplifier, detector, and AGC in a single chip.  
2. **Low Voltage Operation**: Works efficiently at 1.5V–3V, making it suitable for battery-powered devices.  
3. **Minimal External Components**: Requires few additional parts (coil, tuning capacitor, resistors, capacitors) for a complete AM radio.  
4. **High Sensitivity**: Optimized for weak signal reception in the AM band.  
5. **Compact SIP Package**: Easy to integrate into small PCB designs.  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

350mA; V(cc): 6V; 0.2A; AM 1 chip radio

Alternative Part Number

  • KA22421 --: AM radio receiver IC with similar function and pinout, commonly used as a direct substitute for the TA7641 series in radio applications.
  • LM386 --: Widely available low-voltage audio amplifier IC often used in similar small radio/audio circuits; requires minor circuit adaptation but is a reliable functional alternative.
  • TDA2822M --: Dual low-voltage audio power amplifier that can replace the audio output stage in similar radio designs, with good availability and comparable supply voltage range.

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