Overview
The TDA7564BH is a quad bridge type car radio amplifier produced by STMicroelectronics, utilizing advanced BCD (Bipolar-CMOS-DMOS) technology. This device is specifically designed for car radio applications and is available in the Flexiwatt25 (horizontal) package. It features a high-efficiency class SB amplifier with a MOSFET output power stage, ensuring low distortion and powerful sound output. The TDA7564BH is equipped with a comprehensive set of diagnostics and protection features, including I2C bus communication for status monitoring and fault detection.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage | 18 | V |
| DC Supply Voltage | 28 | V |
| Peak Supply Voltage (t = 50 ms) | 50 | V |
| Output Power (RL = 4 Ω, THD 10%) | 4 x 28 W | W |
| Output Power (RL = 2 Ω, THD 10%) | 4 x 40 W | W |
| Output Peak Current (not repetitive, t = 100 ms) | 8 | A |
| Output Peak Current (repetitive, f > 10 Hz) | 6 | A |
| Power Dissipation (Tcase = 70 °C) | 85 | W |
| Storage and Junction Temperature | -55 to 150 | °C |
| Total Harmonic Distortion (PO = 1 W to 10 W, STD mode) | 0.02 | % |
| Cross Talk (f = 1 kHz to 10 kHz, Rg = 600 Ω) | 50 | dB |
| Input Impedance | 60 to 130 kΩ | kΩ |
Key Features
- Multipower BCD technology with MOSFET output power stage
- High efficiency class SB amplifier
- Full I2C bus driving for standby, independent front/rear soft play/mute, selectable gain, and high efficiency enable/disable
- Comprehensive diagnostics including AC and DC load detection, short circuit protection, clipping detector, and linear thermal shutdown
- ESD protection and DC offset detection
- Four independent short circuit protections and open load detection
Applications
The TDA7564BH is primarily designed for car radio applications, offering high power output and advanced diagnostic features. It is suitable for use in automotive audio systems where high efficiency, low distortion, and robust fault protection are essential.
Q & A
- What is the TDA7564BH used for? The TDA7564BH is used in car radio applications as a quad bridge type amplifier.
- What package options are available for the TDA7564BH? The TDA7564BH is available in the Flexiwatt25 (horizontal) package.
- What is the maximum output power of the TDA7564BH? The maximum output power is 4 x 50 W at 4 Ω and 4 x 72 W at 2 Ω.
- Does the TDA7564BH have built-in diagnostics? Yes, it includes a full diagnostics array that communicates the status of each speaker through the I2C bus.
- What protection features does the TDA7564BH have? It includes short circuit protection, clipping detector, linear thermal shutdown, and ESD protection.
- What is the operating supply voltage range for the TDA7564BH? The operating supply voltage range is up to 18 V.
- How does the TDA7564BH manage thermal issues? It features high efficiency performance and linear thermal shutdown to manage thermal issues.
- Can the TDA7564BH be controlled via I2C bus? Yes, it supports full I2C bus driving for various control functions.
- What is the total harmonic distortion (THD) of the TDA7564BH? The THD is 0.02% for output powers from 1 W to 10 W in STD mode.
- Is the TDA7564BH suitable for high-power audio applications? Yes, it is designed for high-power audio applications in automotive systems.
