Overview
The TDA7384B, produced by STMicroelectronics, is a quad bridge car radio amplifier designed for high-end automotive audio applications. Although the TDA7384B is now obsolete and no longer manufactured, it was a significant component in the automotive audio industry due to its high output power capability and advanced features. The amplifier is part of the TDA7384 series, which includes the TDA7384A, and is packaged in the Flexiwatt 25 package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage (VCC) | 18 | V |
| DC Supply Voltage (VCC) | 28 | V |
| Peak Supply Voltage (t = 50ms) | 50 | V |
| Output Peak Current (Repetitive, Duty Cycle 10% at f = 10Hz) | 4.5 | A |
| Output Peak Current (Non-Repetitive, t = 100µs) | 5.5 | A |
| Power Dissipation (Tcase = 70°C) | 80 | W |
| Junction Temperature | 150 | °C |
| Storage Temperature | -55 to 150 | °C |
| Thermal Resistance Junction to Case | 1 | °C/W |
| Output Power (VS = 13.2V, THD = 10%) | 22 | W |
| Output Power (VS = 14.4V, THD = 10%) | 25 | W |
| Output Power (EIAJ, VS = 13.7V) | 35 | W |
| Output Power (Max, VS = 14.4V) | 40 | W |
| Distortion (THD, Po = 4W) | 0.04 to 0.15% | % |
| Output Noise (A Weighted, Bw = 20Hz to 20KHz) | 50 to 100 | µV |
| Supply Voltage Rejection (f = 100Hz, Vr = 1Vrms) | 50 to 65 | dB |
| High Cut-Off Frequency (PO = 0.5W) | 100 to 200 | KHz |
| Input Impedance | 70 to 100 | KΩ |
Key Features
- High Output Power Capability: Up to 4 x 40W/4Ω max and 4 x 35W/4Ω EIAJ.
- Low Distortion and Noise: Low THD and output noise, ensuring high-quality audio output.
- Stand-by and Mute Functions: CMOS-compatible stand-by and mute facilities with low current consumption.
- Automute Function: Automute at minimum supply voltage detection.
- Protection Features: Output short circuit to GND, to VS, across the load, very inductive loads, overrating chip temperature with soft thermal limiter, load dump voltage, and ESD protection.
- Low External Component Count: Internally fixed gain (26dB), no external compensation, and no bootstrap capacitors required.
- Compact Design: Packaged in Flexiwatt 25, allowing for very compact sets.
Applications
The TDA7384B is specifically designed for high-end car radio applications, providing a robust and reliable solution for automotive audio systems. Its features make it suitable for use in various automotive audio setups where high power output, low distortion, and compact design are essential.
Q & A
- What is the maximum output power of the TDA7384B?
The maximum output power of the TDA7384B is up to 4 x 40W/4Ω max and 4 x 35W/4Ω EIAJ.
- What is the operating supply voltage range of the TDA7384B?
The operating supply voltage range is up to 18V DC, with a peak supply voltage of 50V for 50ms.
- Does the TDA7384B have built-in protection features?
Yes, it includes protections such as output short circuit to GND, to VS, across the load, very inductive loads, overrating chip temperature with soft thermal limiter, load dump voltage, and ESD protection.
- What are the stand-by and mute functions of the TDA7384B?
The TDA7384B features CMOS-compatible stand-by and mute facilities with low current consumption. The stand-by and mute pins can be driven by conventional/low-power transistors or microprocessors.
- What is the thermal resistance junction to case of the TDA7384B?
The thermal resistance junction to case is 1°C/W.
- Is the TDA7384B still in production?
No, the TDA7384B is obsolete and no longer manufactured.
- What is the input impedance of the TDA7384B?
The input impedance is 70 to 100 KΩ.
- What is the high cut-off frequency of the TDA7384B?
The high cut-off frequency is 100 to 200 KHz at PO = 0.5W.
- Does the TDA7384B require external compensation or bootstrap capacitors?
No, it does not require external compensation or bootstrap capacitors due to its internally fixed gain and design.
- What is the package type of the TDA7384B?
The TDA7384B is packaged in Flexiwatt 25.
