Overview
The TDA7264/TDA7264A is a class AB dual audio power amplifier produced by STMicroelectronics. It is assembled in the Multiwatt package and is specifically designed for high-quality sound applications such as Hi-Fi music centers and stereo TV sets. This amplifier is known for its high output power and robust feature set, making it a reliable choice for various audio systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage Range | ±5 | ±22.5 | V | ||
| Output Power (THD = 10%) | RL = 8 Ω, VS = ±20 V | 20 | 25 | 25 | W |
| Output Power (THD = 10%) | RL = 4 Ω, VS = ±16 V | 20 | 20 | W | |
| Total Harmonic Distortion (THD) | PO = 1 W, f = 1 kHz, RL = 8 Ω, VS = ±20 V | 0.02 | % | ||
| Crosstalk | f = 1 kHz | 70 | dB | ||
| Quiescent Current | 80 | 130 | mA | ||
| Junction Temperature at Thermal Shut-down | 145 | °C |
Key Features
- Stand-by feature with low Iq
- Thermal overload protection
- Wide supply voltage range (up to ±22.5 V)
- Split supply
- High output power: 25 W + 25 W into 8 Ω with VS = ±20 V and THD = 10%
- No “pop” at turn on/off
- Mute (“pop”-free)
- Short-circuit protection
- Few external components required
Applications
The TDA7264/TDA7264A is designed for high-quality sound applications, including:
- Hi-Fi music centers
- Stereo TV sets
Q & A
- What is the maximum output power of the TDA7264?
The TDA7264 can deliver up to 25 W + 25 W into 8 Ω with VS = ±20 V and THD = 10%.
- What is the supply voltage range for the TDA7264?
The supply voltage range is up to ±22.5 V.
- Does the TDA7264 have thermal overload protection?
Yes, the TDA7264 includes thermal overload protection.
- What is the quiescent current in standby mode?
The quiescent current in standby mode is approximately 3 mA.
- Is the TDA7264 protected against short circuits?
Yes, the TDA7264 has short-circuit protection.
- Does the TDA7264 produce any “pop” noise at turn on/off?
No, the TDA7264 is designed to have no “pop” noise at turn on/off.
- What is the typical total harmonic distortion (THD) at 1 W output?
The typical THD at 1 W output is 0.02% at 1 kHz with RL = 8 Ω and VS = ±20 V.
- What is the junction temperature at thermal shut-down?
The junction temperature at thermal shut-down is 145°C.
- What package type is the TDA7264 available in?
The TDA7264 is available in an 8-pin Multiwatt package.
- Does the TDA7264 have a mute function?
Yes, the TDA7264 has a “pop”-free mute function.
