Overview
The TDA7267 is a mono audio amplifier produced by STMicroelectronics. It is designed specifically for TV applications and features a fully complementary output configuration, allowing for a rail-to-rail voltage swing without the need for bootstrap capacitors. This amplifier is packaged in an 8-DIP (Mini DIP) format and is part of the Class AB amplifier family.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage (VS) | 4.5 - 18 | V |
| Output Peak Current (IO) | 1.5 | A |
| Operating Temperature Range | 0 to 70 | °C |
| Junction Temperature (Tj) | 150 | °C |
| Storage Temperature Range (Tstg) | -40 to 125 | °C |
| Quiescent Current (IS) | 20 - 30 | mA |
| Stand-By Current (Isb) | 0.3 | mA |
| Quiescent Output Voltage (VO) | 6 | V |
| Voltage Gain (AV) | 32 | dB |
| Input Impedance (RIN) | 100 KΩ | |
| Output Power (PO) @ THD 10% | 1.8 - 2 | W |
| Distortion (THD) @ PO = 1W | 1.0% | |
| Supply Voltage Rejection (SVR) | 50 dB | |
| Input Noise Voltage (EI) | 1.5 - 5 µV |
Key Features
- Internal fixed gain of 32 dB
- No feedback capacitor or Boucherot cell required
- Thermal protection and AC short circuit protection
- SVR capacitor for better ripple rejection
- Low turn-on/off pop
- Stand-by mode
- Depop, short-circuit, and thermal protection
- Fully complementary output configuration for rail-to-rail voltage swing
Applications
The TDA7267 is specifically designed for TV applications, making it suitable for use in various audio systems within television sets. Its features also make it applicable in other consumer electronics where a reliable, low-distortion mono audio amplifier is required.
Q & A
- What is the maximum output power of the TDA7267?
The TDA7267 can deliver up to 2W of output power with a THD of 10% at 12V and 8Ω load.
- What is the operating supply voltage range for the TDA7267?
The operating supply voltage range is from 4.5V to 18V.
- What type of protection does the TDA7267 have?
The TDA7267 features thermal protection, AC short circuit protection, and depop protection.
- What is the quiescent current of the TDA7267?
The quiescent current is typically 20-30 mA.
- Does the TDA7267 have a standby mode?
- What is the input impedance of the TDA7267?
The input impedance is 100 KΩ.
- What is the voltage gain of the TDA7267?
The voltage gain is fixed at 32 dB.
- What is the thermal resistance junction to ambient for the TDA7267?
The thermal resistance junction to ambient is 80 °C/W.
- In what package is the TDA7267 available?
The TDA7267 is available in an 8-DIP (Mini DIP) package.
- What is the typical distortion at 1W output power?
The typical distortion at 1W output power is 1.0%.
