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TDA8922BJ from PHILIPS

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TDA8922BJ

Manufacturer: PHILIPS, PHI, NXP

2 x 50 W class-D power amplifier

Partnumber Manufacturer Quantity Availability
TDA8922BJ PHILIPS, PHI, NXP 7465 In Stock

Description and Introduction

2 x 50 W class-D power amplifier The TDA8922BJ is a Class-D audio amplifier manufactured by NXP Semiconductors. Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**
- **Output Power:**  
  - 2 × 50 W (4 Ω, THD = 10%)  
  - 2 × 30 W (8 Ω, THD = 10%)  
- **Supply Voltage Range:** ±12.5 V to ±30 V  
- **Efficiency:** Up to 90%  
- **Total Harmonic Distortion (THD):** <0.5% (typical)  
- **Signal-to-Noise Ratio (SNR):** >90 dB  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** HSOP24 (Heat Sink Small Outline Package)  

### **Descriptions:**
- The TDA8922BJ is a high-efficiency Class-D audio amplifier designed for stereo or mono applications.  
- It features a built-in protection circuit for short-circuit, overvoltage, undervoltage, and thermal shutdown.  
- The amplifier operates in a bridge-tied load (BTL) configuration, eliminating the need for output coupling capacitors.  
- It is suitable for home audio systems, multimedia speakers, and other audio amplification applications.  

### **Features:**
- **High Efficiency:** Reduces power dissipation and heat generation.  
- **Low Standby Current:** <1 mA in mute mode.  
- **Fixed Gain:** 30 dB (eliminates the need for external gain-setting components).  
- **Mute Function:** Allows for power-saving mode.  
- **Short-Circuit Protected:** Robust protection against output shorts.  
- **Thermal Protection:** Automatically shuts down in case of overheating.  

This information is based on the manufacturer's datasheet for the TDA8922BJ.

Application Scenarios & Design Considerations

2 x 50 W class-D power amplifier

Alternative Part Number

  • TDA8920BJ --: Same TDA892x class-D amplifier family with nearly identical pinout and supply range; lower power rating but often a drop-in for less demanding loads.
  • TDA8950J --: Higher-power class-D amplifier in the same TDA89xx series with compatible control and protection features; suitable when extra output headroom is acceptable.
  • STA516B --: Alternative class-D audio power stage from a different vendor with comparable voltage and power capability; requires minor circuit adaptation but is a viable cross-vendor substitute.
  • STA505 --: Alternative class-D audio amplifier from a different vendor with comparable output power and supply range, suitable when a cross-vendor redesign is acceptable.
  • TDA8954J --: Higher-power class-D amplifier in the same TDA89xx series with compatible control interface and similar application circuit, suitable when extra headroom is acceptable.
  • TPA3116D2 --: Widely available class-D audio amplifier from a different vendor with comparable supply voltage and output power, usable as a functional substitute with minor circuit adjustments.

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