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TDA7498 from ST,ST Microelectronics

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TDA7498

Manufacturer: ST, SGS-THOMSON

100W+100W dual BTL Class-D audio amplifier

Partnumber Manufacturer Quantity Availability
TDA7498 ST, SGS-THOMSON 761 In Stock

Description and Introduction

100W+100W dual BTL Class-D audio amplifier The TDA7498 is a class-D audio amplifier manufactured by SGS-THOMSON (now STMicroelectronics). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Output Power:**  
  - 100W per channel (stereo) into 4Ω at 10% THD, ±30V supply.  
  - 70W per channel (stereo) into 8Ω at 10% THD, ±30V supply.  
- **Supply Voltage Range:** ±10V to ±30V (dual supply).  
- **Total Harmonic Distortion (THD):** Typically 0.1% at 1W, 1kHz.  
- **Signal-to-Noise Ratio (SNR):** >100dB (A-weighted).  
- **Efficiency:** Up to 90% (class-D operation).  
- **Operating Frequency:** Switching frequency ~300kHz.  
- **Package:** PowerDIP20 (multiwatt-15).  

### **Descriptions:**  
- The TDA7498 is a high-performance class-D amplifier designed for high-power audio applications.  
- It operates in BTL (Bridge-Tied Load) configuration, eliminating the need for output coupling capacitors.  
- Features built-in protection circuits for over-temperature, short-circuit, and over-voltage conditions.  

### **Features:**  
- **High Output Power:** Capable of delivering up to 100W per channel.  
- **Low Distortion:** Minimal THD for high-fidelity audio.  
- **Mute & Standby Functions:** Allows power-saving modes.  
- **Thermal Protection:** Auto-shutdown in case of overheating.  
- **Short-Circuit Protection:** Safeguards the amplifier from damage.  
- **Wide Supply Voltage Range:** Supports flexible power supply configurations.  

The TDA7498 is commonly used in home audio systems, powered speakers, and professional amplifiers.

Application Scenarios & Design Considerations

100W+100W dual BTL Class-D audio amplifier

Alternative Part Number

  • TDA7498E --: Enhanced version of the same class-D amplifier family with higher output power and improved thermal performance; pin-compatible in most designs.
  • TPA3116D2 --: Popular class-D audio amplifier with comparable power range and supply voltage, widely used as a drop-in alternative in audio boards.
  • TDA7492 --: Same ST class-D amplifier series with lower power rating but similar pinout and control interface, suitable for less demanding applications.
  • TDA8920BJ --: Alternative Class-D audio power amplifier with comparable output power and supply range from a different manufacturer, usable when the original is unavailable.

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