Overview
The TDA8922BJ/N2,112 is a high-efficiency class-D audio power amplifier produced by NXP USA Inc. This amplifier is designed to deliver high output power with very low dissipation, making it suitable for various audio applications. The TDA8922B series, which includes the TDA8922BJ, features two independent amplifier channels with high output power, high efficiency, low distortion, and a low quiescent current.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VP) | ±12.5 | ±26 | ±30 | V | |
| Total Quiescent Supply Current (Iq(tot)) | No load; no filter; no snubber network connected | - | 50 | 65 | mA |
| Standby Supply Current (Istb) | 150 | 500 | µA | ||
| Mode Select Input Voltage (VI) | 0 | - | 6 | V | |
| Input Voltage for Standby Mode (Vstb) | 0 | - | 0.8 | V | |
| Input Voltage for Mute Mode (Vmute) | 2.2 | - | 3.0 | V | |
| Input Voltage for Operating Mode (Von) | 4.2 | - | 6 | V | |
| Output Power | - | 2 × 50 W | - | W |
Key Features
- High Efficiency: The TDA8922BJ operates with high efficiency, typically up to 90% or higher, reducing energy consumption and heat generation.
- Low Distortion: The amplifier features low distortion, ensuring high-quality audio output.
- Low Quiescent Current: It has a low quiescent current, which is beneficial for power-saving applications.
- Protection Features: Built-in protection includes a temperature sensor and a maximum current detector to ensure safe operation.
- Flexible Configuration: The amplifier channels can be configured as Mono Bridge-Tied Load (BTL) or Stereo Single-Ended (SE) amplifiers.
- PWM and Analog Feedback Loops: Each audio channel includes two PWMs, two analog feedback loops, and two differential input stages.
Applications
The TDA8922BJ/N2,112 is suitable for a variety of audio applications, including:
- Home Audio Systems: Due to its high efficiency and low distortion, it is ideal for home audio systems where quality sound is paramount.
- Portable Audio Equipment: Its high efficiency makes it suitable for portable audio devices where power consumption is a critical factor.
- Automotive Audio Systems: The amplifier's robust design and protection features make it a good fit for automotive audio systems.
- Professional Audio Equipment: It can be used in professional audio setups requiring high power output and low distortion.
Q & A
- What is the typical output power of the TDA8922BJ/N2,112?
The typical output power of the TDA8922BJ/N2,112 is 2 × 50 W.
- What is the supply voltage range for the TDA8922BJ/N2,112?
The supply voltage range is ±12.5 V to ±30 V.
- What protection features are built into the TDA8922BJ/N2,112?
The amplifier includes a temperature sensor and a maximum current detector for protection.
- Can the TDA8922BJ/N2,112 be configured in different modes?
- What is the typical quiescent current of the TDA8922BJ/N2,112?
The typical total quiescent supply current is 50 mA.
- What is the operating temperature range for the TDA8922BJ/N2,112?
The operating temperature range is not explicitly stated in the provided sources, but typical class-D amplifiers operate within a range of -40°C to 85°C.
- Does the TDA8922BJ/N2,112 require impedance matching with the speakers?
- What are the advantages of using a class-D audio amplifier like the TDA8922BJ/N2,112?
- Is the TDA8922BJ/N2,112 still in production?
- Where can I find more detailed specifications for the TDA8922BJ/N2,112?
