Overview
The TDA7561 is a multifunction quad power amplifier designed by STMicroelectronics, specifically intended for car radio applications. It utilizes BCD (Bipolar-CMOS-DMOS) technology and features a DMOS power output stage, which ensures very low distortion and a clear, powerful sound. The amplifier is packaged in a Flexiwatt25 package, available in both vertical and horizontal configurations. It offers high output power capability, with up to 4 x 25 W at 4 Ω and 4 x 60 W at 2 Ω, making it suitable for demanding automotive audio systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage | 8 - 18 | V |
| Peak Supply Voltage (for t = 50 ms) | 50 | V |
| Output Power (EIAJ, VS = 13.7 V, RL = 4 Ω) | 35 | W |
| Output Power (EIAJ, VS = 13.7 V, RL = 2 Ω) | 55 | W |
| Max. Output Power (RL = 2 Ω) | 60 | W |
| Total Harmonic Distortion (THD) at 1 W to 10 W | 0.04 - 0.1 % | % |
| Input Impedance | 80 - 130 kΩ | kΩ |
| Voltage Gain | 25 - 27 dB | dB |
| Thermal Resistance (Junction-to-Case) | Max. 1 °C/W | °C/W |
| Storage and Junction Temperature | -55 to 150 °C | °C |
| Package Type | 25-Flexiwatt (Formed Leads) |
Key Features
- Multipower BCD technology
- DMOS power output stage for low distortion and clear sound
- High output power capability: up to 4 x 25 W at 4 Ω and 4 x 60 W at 2 Ω
- Full I2C bus driving for configuration and diagnostics
- Standby, independent front/rear soft play/mute, and selectable gain (26 dB - 12 dB)
- Full fault protection including short circuit, thermal, and DC offset detection
- Clipping detector and ESD protection
- Four independent short circuit protection and open load detection
Applications
The TDA7561 is specifically designed for car radio applications, providing high-quality audio output with robust fault protection and diagnostic features. It is suitable for use in automotive audio systems where reliability, low distortion, and high power output are critical.
Q & A
- What is the TDA7561 used for?
The TDA7561 is used in car radio applications to provide high-quality audio output.
- What is the maximum output power of the TDA7561?
The maximum output power is up to 4 x 60 W at 2 Ω.
- What type of technology does the TDA7561 use?
The TDA7561 uses BCD (Bipolar-CMOS-DMOS) technology.
- What are the key diagnostic features of the TDA7561?
The key diagnostic features include I2C bus driving, short circuit protection, thermal protection, DC offset detection, and clipping detection.
- What is the operating supply voltage range of the TDA7561?
The operating supply voltage range is 8 - 18 V.
- What is the thermal resistance of the TDA7561?
The thermal resistance (junction-to-case) is maximum 1 °C/W.
- What type of package does the TDA7561 come in?
The TDA7561 comes in a 25-Flexiwatt (Formed Leads) package.
- What are the storage and junction temperature limits for the TDA7561?
The storage and junction temperature limits are -55 to 150 °C.
- Does the TDA7561 have ESD protection?
Yes, the TDA7561 includes ESD protection.
- How does the TDA7561 control its configuration and behavior?
The TDA7561 can be controlled and configured through the I2C bus.
