Overview
The TDA8922CTH/N1,112 is a high-performance class-D power amplifier produced by NXP USA Inc. This amplifier is designed to deliver robust and efficient audio power, making it suitable for a variety of audio applications. It is available in HSOP24 and DBS23P packages, ensuring compatibility with different design requirements.
Key Specifications
| Parameter | Value |
|---|---|
| Output Power | 155 W x 1 @ 8 Ω, 75 W x 2 @ 6 Ω |
| Supply Voltage Range | ±12.5 V to ±32.5 V |
| Package Type | HSOP24, DBS23P |
| Protection Features | UnderVoltage Protection (UVP), OverVoltage Protection (OVP), UnBalance Protection (UBP), Thermal FoldBack (TFB), OverTemperature Protection (OTP), OverCurrent Protection (OCP) |
| Thermal FoldBack Activation Temperature | Approximately 153 °C |
| OverCurrent Protection Threshold | 6 A |
Key Features
- High-efficiency class-D amplifier design for reduced power consumption and heat generation.
- Advanced thermal protection strategy including Thermal FoldBack (TFB) and OverTemperature Protection (OTP) to ensure reliable operation.
- Comprehensive protection features including UVP, OVP, UBP, and OCP to safeguard against various fault conditions.
- Pin-compatible with TDA8950/20C for both HSOP24 and DBS23P packages, facilitating easy design transitions.
- Delayed start-up to prevent pop noise during power-on.
Applications
The TDA8922CTH/N1,112 is suitable for a wide range of audio applications, including home audio systems, car audio systems, professional audio equipment, and public address systems. Its high power output and robust protection features make it an ideal choice for demanding audio environments.
Q & A
- What is the maximum output power of the TDA8922CTH/N1,112? The maximum output power is 155 W x 1 @ 8 Ω and 75 W x 2 @ 6 Ω.
- What is the supply voltage range for this amplifier? The supply voltage range is from ±12.5 V to ±32.5 V.
- What protection features are included in the TDA8922CTH/N1,112? The amplifier includes UVP, OVP, UBP, TFB, OTP, and OCP.
- What is the thermal foldback activation temperature? The thermal foldback activation temperature is approximately 153 °C.
- How does the overcurrent protection work? The OCP limits the maximum output current to 6 A and discharges the capacitor on the PROT pin when activated.
- Is the TDA8922CTH/N1,112 pin-compatible with other NXP amplifiers? Yes, it is pin-compatible with TDA8950/20C for both HSOP24 and DBS23P packages.
- What is the purpose of the delayed start-up feature? The delayed start-up feature prevents pop noise during power-on by ensuring the coupling capacitors are fully charged before the outputs start switching.
- What are some common applications for the TDA8922CTH/N1,112? Common applications include home audio systems, car audio systems, professional audio equipment, and public address systems.
- How does the thermal protection strategy work? The thermal protection strategy includes TFB to reduce output power and OTP to shut down the device if the temperature exceeds a certain threshold.
- What is the recommended time constant for the transition between Mute and Operating modes? The recommended time constant is at least 350 ms to ensure pop noise-free start-up.
