Overview
The TDA7498E is a dual BTL class-D audio amplifier designed by STMicroelectronics for use in home audio systems and active speaker applications. It operates with a single power supply and is packaged in a 36-pin PowerSSO package with an exposed pad up (EPU) to facilitate the mounting of a separate heatsink.
This amplifier is known for its high efficiency and versatile operation, making it a robust choice for various audio applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Power (THD = 10%, RL = 4 Ω, VCC = 36 V) | 160 W + 160 W | W |
| Output Power (Mono Parallel BTL, THD = 10%, RL = 3 Ω, VCC = 36 V) | 220 W | W |
| Supply Voltage Range | 14 - 36 V | V |
| Efficiency | 85% | % |
| Gain Settings | 23.8 dB, 29.8 dB, 33.3 dB, 35.8 dB | dB |
| Input Resistance (Differential Input) | 69 kΩ | kΩ |
| Operating Temperature Range | 0 to 70 °C | °C |
| Package Type | PowerSSO36 (EPU) | |
| Thermal Resistance (Junction to Case) | 3.0 °C/W | °C/W |
Key Features
- High output power: 160 W + 160 W at THD = 10% with RL = 4 Ω and VCC = 36 V, and up to 220 W in mono parallel BTL configuration with RL = 3 Ω and VCC = 36 V.
- Wide-range single-supply operation: 14 - 36 V.
- High efficiency: η = 85%.
- Parallel BTL function using the MODE pin.
- Four selectable, fixed gain settings: 23.8 dB, 29.8 dB, 33.3 dB, and 35.8 dB.
- Differential inputs to minimize common-mode noise.
- Standby and mute features.
- Smart protection including overcurrent, undervoltage, and thermal overload protection.
- Small offset voltage: less than 20 mV.
Applications
The TDA7498E is designed for use in various audio applications, including:
- Home audio systems.
- Active speaker systems.
- Professional audio equipment.
- High-power audio amplification in consumer electronics.
Q & A
- What is the maximum output power of the TDA7498E?
The TDA7498E can deliver up to 160 W + 160 W at THD = 10% with RL = 4 Ω and VCC = 36 V, and up to 220 W in mono parallel BTL configuration with RL = 3 Ω and VCC = 36 V.
- What is the operating supply voltage range of the TDA7498E?
The operating supply voltage range is 14 - 36 V.
- What is the efficiency of the TDA7498E?
The efficiency of the TDA7498E is 85%.
- How can the gain be set on the TDA7498E?
The gain can be set using the GAIN pin, with four selectable, fixed gain settings of nominally 23.8 dB, 29.8 dB, 33.3 dB, and 35.8 dB.
- What type of protection does the TDA7498E have?
The TDA7498E includes smart protection features such as overcurrent, undervoltage, and thermal overload protection.
- What is the package type of the TDA7498E?
The TDA7498E comes in a 36-pin PowerSSO package with an exposed pad up (EPU).
- How can the TDA7498E be configured for mono or stereo operation?
The device can be configured for mono or stereo operation using the MODE pin. Connecting the MODE pin to VDDS configures the device in mono BTL, while connecting it to ground or floating configures it for stereo operation.
- What is the operating temperature range of the TDA7498E?
The operating temperature range is 0 to 70 °C.
- What is the thermal resistance of the TDA7498E?
The thermal resistance (junction to case) is 3.0 °C/W.
- Does the TDA7498E have standby and mute features?
Yes, the TDA7498E includes standby and mute features.
- How does the TDA7498E minimize common-mode noise?
The TDA7498E uses differential inputs to minimize common-mode noise.
