Overview
The TDA7564B is a cutting-edge BCD technology quad bridge type car radio amplifier developed by STMicroelectronics. It is specifically designed for car radio applications and is available in Flexiwatt25 and PowerSO36 packages. This amplifier boasts a MOSFET output power stage and DMOS power output, ensuring high efficiency and low distortion, making it ideal for delivering clear and powerful sound. The device features advanced diagnostics and protection mechanisms, including I2C bus communication for monitoring speaker status and various fault protections.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage (Vop) | 18 | V |
| DC Supply Voltage (VS) | 28 | V |
| Peak Supply Voltage (Vpeak) | 50 | V (for t = 50 ms) |
| Output Peak Current (IO) - Non-Repetitive | 8 | A (t = 100 ms) |
| Output Peak Current (IO) - Repetitive | 6 | A (f > 10 Hz) |
| Power Dissipation (Ptot) at Tcase = 70°C | 85 | W |
| Storage and Junction Temperature (Tstg, Tj) | -55 to 150 | °C |
| Output Power (PO) at 4Ω, 14.4V, 1kHz, 10% THD | 4 x 28 W | W |
| Output Power (PO) at 2Ω, 13.7V, 10% THD | 4 x 50 W | W |
| Total Harmonic Distortion (THD) at 1W to 10W, STD Mode | 0.02% | % |
| Cross Talk (CT) at 1kHz to 10kHz, Rg = 600Ω | 50 dB | dB |
| Input Impedance (RIN) | 60 to 130 kΩ | kΩ |
Key Features
- Multipower BCD technology
- MOSFET output power stage and DMOS power output
- New high efficiency (class SB)
- High output power capability: 4x28 W/4Ω @ 14.4 V, 1 kHz, 10% THD, and 4x50 W max
- Full I2C bus driving for standby, independent front/rear soft play/mute, selectable gain, high efficiency enable/disable, and digital diagnostics
- Full fault protection including DC offset detection, four independent short circuit protection, and clipping detector
- Linear thermal shutdown with multiple thermal warnings
- ESD protection
Applications
The TDA7564B is specifically designed for car radio applications, offering high power output and advanced diagnostics. It is suitable for use in automotive infotainment systems where high efficiency, low distortion, and robust fault protection are essential.
Q & A
- What is the TDA7564B?
The TDA7564B is a BCD technology quad bridge type car radio amplifier developed by STMicroelectronics.
- What are the key packages available for the TDA7564B?
The TDA7564B is available in Flexiwatt25 (vertical and horizontal) and PowerSO36 packages.
- What is the maximum output power of the TDA7564B?
The maximum output power is 4x50 W at 4Ω and 4x72 W at 2Ω.
- What is the total harmonic distortion (THD) of the TDA7564B?
The THD is 0.02% at 1 W to 10 W in STD mode.
- Does the TDA7564B have built-in diagnostics?
Yes, it features a full diagnostics array that communicates through the I2C bus, including AC and DC load detection.
- What kind of fault protection does the TDA7564B offer?
The TDA7564B offers full fault protection, including DC offset detection, four independent short circuit protection, and clipping detector.
- How does the TDA7564B manage thermal issues?
The device features linear thermal shutdown with multiple thermal warnings to manage thermal issues effectively.
- What is the input impedance of the TDA7564B?
The input impedance ranges from 60 to 130 kΩ.
- Is the TDA7564B ESD protected?
Yes, the TDA7564B includes ESD protection.
- What is the typical quiescent current of the TDA7564B?
The total quiescent drain current is typically 170 to 300 mA.
- What is the storage and junction temperature range for the TDA7564B?
The storage and junction temperature range is -55 to 150°C.
