Overview
The TDA7498E is a dual BTL (Bridge-Tied Load) class-D audio amplifier designed by STMicroelectronics for home systems and active speaker applications. It operates on a single power supply and is known for its high efficiency and robust feature set. The amplifier is packaged in a 36-pin PowerSSO package with an exposed pad up (EPU) to facilitate the mounting of a separate heatsink, enhancing thermal management.
Key Specifications
| Specification | Details |
|---|---|
| Model | TDA7498E |
| Output Power | 160W + 160W (THD = 10% with RL = 4 Ω and VCC = 36 V) 1 x 220 W (mono parallel BTL at THD = 10% with RL = 3 Ω and VCC = 36 V) |
| Terminating Impedance | 2Ω - 8Ω |
| Input Mode | Analog |
| Output Mode | Passive Speakers |
| Frequency Range | 20Hz - 20kHz (±1 dB) |
| THD | ≤ 0.04% |
| SNR | ≥ 98dB |
| Input Sensitivity | ≤ 280mV |
| DC Input Range | 14 - 36 V |
| Power Supply | 24V 4.5A (recommended) |
| Package | 36-pin PowerSSO (EPU) |
| Operating Temperature Range | 0 to 70 °C |
| Efficiency | η = 85% |
Key Features
- High efficiency (η = 85%)
- Wide-range single-supply operation (14 - 36 V)
- Parallel BTL function using the MODE pin
- Four selectable, fixed gain settings of nominally 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 thermal overload and overcurrent protection
- Small output offset voltage less than 20 mV
Applications
The TDA7498E is designed for various audio applications, including:
- Home audio systems
- Active speaker systems
- Stereo and mono BTL configurations using the MODE pin
The device can be configured to operate in either stereo mode or mono BTL mode by setting the MODE pin, allowing for flexible use in different audio setups.
Q & A
- What is the TDA7498E?
The TDA7498E is a dual BTL class-D audio amplifier designed for home systems and active speaker applications.
- What is the output power of the TDA7498E?
The TDA7498E can deliver 160W + 160W output power at THD = 10% with RL = 4 Ω and VCC = 36 V, and up to 220W in mono parallel BTL configuration.
- What is the input sensitivity of the TDA7498E?
The input sensitivity is ≤ 280mV.
- What is the frequency range of the TDA7498E?
The frequency range is 20Hz - 20kHz (±1 dB).
- How efficient is the TDA7498E?
The TDA7498E has an efficiency of η = 85%.
- What protection features does the TDA7498E have?
The device includes smart protection features such as thermal overload protection, overcurrent protection, and undervoltage protection.
- Can the TDA7498E be used in both stereo and mono configurations?
- What is the package type of the TDA7498E?
The TDA7498E comes in a 36-pin PowerSSO package with an exposed pad up (EPU) for heatsink mounting.
- What is the operating temperature range of the TDA7498E?
The operating temperature range is 0 to 70 °C.
- How do you set the gain on the TDA7498E?
The gain is set using the GAIN pin, which allows for four selectable, fixed gain settings.
