Overview
The TDA7264A, produced by STMicroelectronics, is a class-AB dual audio power amplifier designed for high-quality sound applications. It is assembled in an 8-pin Multiwatt package and is particularly suited for use in hi-fi music centers and stereo TV sets. This amplifier offers a wide range of features that enhance its performance and usability, including a wide supply voltage range, high output power, and various protection mechanisms.
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 | 25 | 25 | W |
| Total Harmonic Distortion (THD) | PO = 1 W, f = 1 kHz, RL = 8 Ω, VS = ±20 V | 0.02 | % | ||
| Quiescent Current | 80 | 130 | mA | ||
| Operating Temperature | 0 | 70 | °C | ||
| Junction Temperature | -40 | 150 | °C |
Key Features
- Few External Components: The TDA7264A requires minimal external components, simplifying the design and implementation process.
- Standby Feature (Low Iq): The amplifier has a standby mode with low quiescent current, reducing power consumption when not in use.
- Thermal Overload Protection: Built-in thermal protection ensures the amplifier remains safe under high-temperature conditions.
- Wide Supply Voltage Range: The amplifier can operate with a supply voltage range up to ±22.5 V.
- High Output Power: Delivers up to 25 W + 25 W into 8 Ω loads with a THD of 10% at VS = ±20 V.
- Split Supply: Supports split supply configurations.
- Mute (Pop-Free): Features a mute function that is free from popping sounds.
- No Pop at Turn-On/Off: Ensures silent operation during power-on and power-off cycles.
- Short-Circuit Protection: Protects the amplifier from short-circuit conditions.
Applications
The TDA7264A is specifically designed for high-quality sound applications, including:
- Hi-Fi music centers
- Stereo TV sets
- Other audio equipment requiring high power output and low distortion.
Q & A
- What is the maximum output power of the TDA7264A?
The TDA7264A can deliver up to 25 W + 25 W into 8 Ω loads with a THD of 10% at VS = ±20 V.
- What is the operating temperature range of the TDA7264A?
The operating temperature range is from 0°C to 70°C.
- Does the TDA7264A have thermal protection?
Yes, it has built-in thermal overload protection.
- What is the quiescent current in standby mode?
The quiescent current in standby mode is approximately 3 mA.
- How does the mute function work?
The mute function is controlled by the MUTE/STANDBY pin and is designed to be pop-free.
- What type of package does the TDA7264A come in?
The TDA7264A comes in an 8-pin Multiwatt package.
- Does the TDA7264A have short-circuit protection?
Yes, it has built-in short-circuit protection.
- What is the total harmonic distortion (THD) at 1 W output power?
The THD at 1 W output power, f = 1 kHz, RL = 8 Ω, and VS = ±20 V is 0.02%.
- Can the TDA7264A operate with a split supply?
Yes, it supports split supply configurations.
- How does the standby mode work?
The standby mode is controlled by the MUTE/STANDBY pin and turns off the output stages to reduce power consumption.
