Overview
The TDA7375AV, produced by STMicroelectronics, is a class AB car radio amplifier designed to operate in either dual bridge or quad single-ended configurations. This amplifier is renowned for its high output power capability and minimal external component requirements. It features an exclusive fully complementary output stage, internally fixed gain, and a range of protection mechanisms, making it a robust and reliable choice for automotive audio systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage (VS) | 8 - 18 | V |
| Peak Supply Voltage (for t = 50 ms) | 40 | V |
| Output Peak Current (not repetitive, t = 100 μs) | 4.5 | A |
| Output Peak Current (repetitive, f > 10 Hz) | 3.5 | A |
| Power Dissipation (Tcase = 85 °C) | 36 | W |
| Storage and Junction Temperature | -40 to 150 | °C |
| Thermal Resistance Junction-to-Case | 1.8 | °C/W |
| Total Quiescent Drain Current | 150 | mA |
| Output Offset Voltage | 150 | mV |
| Output Power (THD = 10%, RL = 4 Ω, Bridge) | 37 | W |
| Output Power (THD = 10%, RL = 4 Ω, Single Ended) | 23 | W |
| Distortion (RL = 4 Ω, Bridge) | 0.03% | % |
| Cross Talk (f = 1 kHz, Single Ended) | 70 | dB |
| Input Impedance (Single Ended) | 20 - 30 | kΩ |
| Voltage Gain (Single Ended) | 19 - 21 | dB |
Key Features
- High Output Power Capability: Up to 2 x 43 W max./4 Ω and 2 x 37 W/4 Ω EIAJ.
- Minimum External Components: No bootstrap capacitors, no Boucherot cells, and internally fixed gain.
- Standby Function: CMOS compatible with silent turn on/off and muting/standby function, ensuring no audible pop during operations.
- Diagnostics Facility: Detects clipping, output to GND short, output to VS short, soft short at turn-on, and thermal shutdown proximity.
- Protections: Includes output AC/DC short circuit protection, soft short at turn-on, overrating chip temperature with soft thermal limiter, load dump voltage surge, very inductive loads, fortuitous open GND, reversed battery, and ESD protection.
- Flexible Configuration: Can operate in dual bridge or quad single-ended configurations, allowing for various application setups.
- Internally Fixed Gain: Fixed to 20 dB in single-ended and 26 dB in bridge configurations, optimizing output noise, supply voltage rejection, and distortion.
- Rail-to-Rail Output Voltage Swing: Without the need for bootstrap capacitors, ensuring full exploitation of the output stage capabilities.
Applications
The TDA7375AV is designed for use in automotive audio systems, particularly in car radios. It is suitable for a variety of configurations, including:
- 4 Speakers Stereo (F/R): Quad single-ended configuration for four independent channels.
- 2 Speakers Bridge Solutions: Dual bridge configuration for higher power output.
Q & A
- What is the maximum output power of the TDA7375AV in dual bridge configuration?
Up to 2 x 43 W max./4 Ω and 2 x 37 W/4 Ω EIAJ.
- What are the key protection features of the TDA7375AV?
Includes output AC/DC short circuit protection, soft short at turn-on, overrating chip temperature with soft thermal limiter, load dump voltage surge, very inductive loads, fortuitous open GND, reversed battery, and ESD protection.
- How does the TDA7375AV handle standby operations?
The device has a CMOS compatible standby function with silent turn on/off and muting/standby, ensuring no audible pop during operations.
- What is the thermal resistance junction-to-case of the TDA7375AV?
1.8 °C/W).
- Can the TDA7375AV operate in different configurations?
Yes, it can operate in dual bridge or quad single-ended configurations).
- What is the input impedance of the TDA7375AV in single-ended configuration?
20 - 30 kΩ).
- How does the TDA7375AV handle diagnostics?
The device is equipped with diagnostic circuitry to detect clipping, output faults, and thermal shutdown proximity).
- What is the voltage gain of the TDA7375AV in single-ended configuration?
19 - 21 dB).
- Is the TDA7375AV environmentally compliant?
Yes, it is available in ECOPACK® packages that meet environmental compliance standards).
- What is the typical quiescent drain current of the TDA7375AV?
150 mA).
