Overview
The TDA7396 is a BRIDGE class AB audio power amplifier specifically designed for high-power car radio applications. It is produced by STMicroelectronics and is known for its high power capability and minimal external component count. The amplifier features an exclusive fully complementary output stage and an internally fixed gain configuration, which simplifies the design and reduces the number of external components required. Additionally, it includes on-board clipping detection and diagnostics facilities to ensure easy implementation and troubleshooting during car radio assembly and wiring.
Key Specifications
| Parameter | Value |
|---|---|
| Type | Class AB |
| No of Channels | 1 (Mono) |
| Gain | 26dB |
| Supply Voltage (Max) | 28V |
| Output Power | 45W into 2 ohms at 10% 1kHz distortion with 14.4V supply |
| Operating Temperature Range | -40°C to +150°C |
| Common Mode Rejection Ratio | 70dB |
| Power Supply Rejection Ratio | 60dB |
| Total Harmonic Distortion | 0.06% |
| Package Style | MULTIWATT-11 |
| Mounting Method | Flange Mount |
Key Features
- Synchronizing pin for simultaneous turn-on in multi-device applications
- Automute at minimum supply voltage detection
- High power capability: up to 45W into 2 ohms at 10% 1kHz distortion with 14.4V supply
- Minimum external component count: no bootstrap capacitors, no Boucherot cells, internally fixed gain (26dB), no SVR capacitor
- Differential inputs (accepts single-ended or differential input signals)
- Automatic mute during turn-on/off
- No audible pop during mute and standby operations
- Standby function (CMOS compatible)
- On-board clipping detector for gain compression systems
- Diagnostics facility for detecting assembly and wiring mistakes
Applications
The TDA7396 is primarily designed for high-power car radio applications. It is particularly suitable for driving 2 ohm speakers, which is a niche requirement often encountered in car subwoofer systems. Its high power output and robust design make it an ideal choice for automotive audio systems where reliability and performance are critical.
Q & A
- What is the TDA7396 used for? The TDA7396 is used for high-power car radio applications, particularly for driving 2 ohm speakers in automotive audio systems.
- What is the maximum power output of the TDA7396? The maximum power output is 45W into 2 ohms at 10% 1kHz distortion with a 14.4V supply.
- What is the gain of the TDA7396? The gain is internally fixed at 26dB.
- What is the operating temperature range of the TDA7396? The operating temperature range is -40°C to +150°C.
- Does the TDA7396 have any diagnostic features? Yes, it includes a diagnostics facility to detect any mistakes during car radio set assembly and wiring.
- Can the TDA7396 be used with different types of input signals? Yes, it accepts both single-ended and differential input signals.
- What is the package style of the TDA7396? The package style is MULTIWATT-11 with a flange mount.
- Is the TDA7396 compatible with CMOS logic? Yes, the standby function is CMOS compatible.
- How does the TDA7396 handle turn-on and turn-off? It features automatic mute during turn-on and turn-off, with no audible pop during these operations.
- What is the total harmonic distortion of the TDA7396? The total harmonic distortion is 0.06%.
