Overview
The TDA2822M is a dual audio power amplifier integrated circuit manufactured by STMicroelectronics. It is designed for use in portable audio devices such as cassette players, radios, and other battery-operated equipment. This monolithic IC is packaged in an 8-lead Minidip and is known for its low crossover distortion, low quiescent current, and wide operating voltage range from 1.8V to 15V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (Vs) | 1.8 - 15 | V |
| Peak Output Current (Io) | 1 | A |
| Total Power Dissipation (Ptot) at Tamb = 50°C, Tcase = 50°C | 1.4 | W |
| Storage and Junction Temperature (Tstg, Tj) | -40 to +150 | °C |
| Thermal Resistance Junction-ambient (Rth j-amb) | 100 | °C/W |
| Thermal Resistance Junction-pin (Rth j-case) | 70 | °C/W |
| Quiescent Output Voltage (Vo) at Vs = 3V | 1.2 | V |
| Quiescent Drain Current (Id) | 6 - 9 | mA |
| Input Bias Current (Ib) | 100 | nA |
| Output Power (Po) per Channel at RL = 32Ω, VS = 9V, f = 1kHz, d = 10% | 90 | mW |
| Distortion at Po = 0.5W, RL = 8Ω, f = 1kHz | 0.2% | % |
| Closed Loop Voltage Gain at f = 1kHz | 39 | dB |
| Input Resistance at f = 1kHz | 100 | kΩ |
| Total Input Noise at Rs = 10kΩ, B = 22Hz to 22kHz | 2.5 - 3 | µV |
| Supply Voltage Rejection at f = 100Hz | 40 | dB |
Key Features
- Low Crossover Distortion: Ensures high-quality audio output with minimal distortion.
- Low Quiescent Current: Reduces power consumption, making it suitable for battery-operated devices.
- Dual-Channel Design: Supports stereo audio amplification, capable of driving two speakers.
- Wide Operating Voltage Range: Operates from 1.8V to 15V, making it flexible for various power supply conditions.
- Small Package: Available in an 8-lead Minidip package, ideal for space-constrained applications.
- Built-in Protection: Includes short circuit and overheating protection to enhance reliability and durability.
- Bridge or Stereo Configuration: Can be configured in either bridge or stereo mode to suit different application needs).
Applications
- Portable Cassette Players and Radios: Commonly used in these devices due to its low power consumption and compact size).
- MP3 Players and Headphones: Suitable for amplifying audio signals in small portable audio devices).
- Car Audio Systems: Can be used as an amplifier in car audio systems to drive speaker systems).
- Portable Radio Receivers: Used to drive speakers in portable radios for better audio amplification).
Q & A
- What is the TDA2822M used for?
The TDA2822M is used as a dual audio power amplifier in portable audio devices such as cassette players, radios, and MP3 players.
- What is the operating voltage range of the TDA2822M?
The TDA2822M operates within a voltage range of 1.8V to 15V).
- What are the key features of the TDA2822M?
Key features include low crossover distortion, low quiescent current, dual-channel design, and built-in short circuit and overheating protection).
- What is the maximum output power of the TDA2822M?
The maximum output power is 1W per channel in stereo mode and up to 2W in bridge mode).
- What package type is the TDA2822M available in?
The TDA2822M is available in an 8-lead Minidip package).
- What are some common applications of the TDA2822M?
Common applications include portable cassette players, radios, MP3 players, and car audio systems).
- Does the TDA2822M have built-in protection mechanisms?
Yes, it includes built-in short circuit and overheating protection mechanisms).
- How does the TDA2822M configure its output?
The TDA2822M can be configured in either bridge or stereo mode).
- What is the thermal resistance of the TDA2822M?
The thermal resistance junction-ambient is 100°C/W and junction-pin is 70°C/W).
- How do you measure the performance of the TDA2822M?
Performance can be measured by connecting the output to a load, using a voltmeter and ammeter to measure voltage and current, and calculating output power and efficiency).
