Overview
The TDA2822D is a monolithic integrated circuit designed by STMicroelectronics, packaged in an 8-lead SO-8 package. It is specifically intended for use as a dual audio power amplifier, making it suitable for applications in portable cassette players, radios, and CD players. This amplifier is known for its low voltage operation and versatility in both bridge and stereo configurations.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Supply Voltage (VS) | 1.8 | 15 | V | |
| Total Quiescent Drain Current (Id) | 15 | mA | ||
| Output Power (PO) - Stereo, RL = 32 Ω, VS = 6 V | 120 | mW | ||
| Output Power (PO) - Bridge, RL = 8 Ω, VS = 6 V | 320-400 | mW | ||
| Distortion (d) - Stereo, RL = 32 Ω, PO = 40 mW | 0.2 | % | ||
| Distortion (d) - Bridge, RL = 8 Ω, PO = 0.5 W | 0.2 | % | ||
| Closed Loop Voltage Gain (GV) - f = 1 kHz | 36 | 39 | 41 | dB |
| Input Resistance (Ri) - f = 1 kHz | 100 | kΩ | ||
| Total Input Noise (eN) - Rs = 10 kΩ, B = 22 Hz to 22 kHz | 2.5 | µV | ||
| Supply Voltage Rejection (SVR) - f = 100 Hz | 24 | 30 | dB | |
| Channel Separation (Cs) - f = 1 kHz | 50 | dB | ||
| Absolute Maximum Ratings - Supply Voltage (VS) | 15 | V | ||
| Absolute Maximum Ratings - Peak Output Current (IO) | 1 | A | ||
| Absolute Maximum Ratings - Total Power Dissipation (Ptot) at Tamb = 50 °C | 0.5 | W | ||
| Absolute Maximum Ratings - Storage and Junction Temperature (Tstg, Tj) | -40 to 150 | °C |
Key Features
- Low Supply Voltage: The TDA2822D can operate with a supply voltage as low as 1.8 V, making it suitable for low-power applications.
- Low Crossover Distortion: This amplifier is designed to minimize crossover distortion, ensuring high-quality audio output.
- Low Quiescent Current: It features a low quiescent current, which helps in reducing power consumption and heat generation.
- Bridge or Stereo Configuration: The TDA2822D can be configured in either bridge or stereo mode, offering flexibility in different application scenarios.
Applications
The TDA2822D is primarily used in portable audio devices such as:
- Portable cassette players
- Radios
- CD players
Its low voltage operation and compact SO-8 package make it an ideal choice for these applications.
Q & A
- What is the minimum supply voltage for the TDA2822D?
The minimum supply voltage for the TDA2822D is 1.8 V.
- What are the typical applications of the TDA2822D?
The TDA2822D is typically used in portable cassette players, radios, and CD players.
- What is the maximum output power of the TDA2822D in stereo configuration?
In stereo configuration with a load resistance of 32 Ω and a supply voltage of 6 V, the maximum output power is 120 mW.
- What is the maximum output power of the TDA2822D in bridge configuration?
In bridge configuration with a load resistance of 8 Ω and a supply voltage of 6 V, the maximum output power is 320-400 mW.
- What is the thermal resistance junction-ambient (Rthj-amb) of the TDA2822D?
The thermal resistance junction-ambient (Rthj-amb) is 200 °C/W.
- What is the input resistance of the TDA2822D?
The input resistance (Ri) at 1 kHz is 100 kΩ.
- What is the total input noise of the TDA2822D?
The total input noise (eN) with Rs = 10 kΩ and B = 22 Hz to 22 kHz is 2.5 µV.
- What is the supply voltage rejection ratio of the TDA2822D?
The supply voltage rejection ratio (SVR) at 100 Hz is 24-30 dB.
- What is the channel separation of the TDA2822D?
The channel separation (Cs) at 1 kHz is 50 dB.
- What are the absolute maximum ratings for the TDA2822D?
The absolute maximum ratings include a supply voltage of 15 V, peak output current of 1 A, and total power dissipation of 0.5 W at Tamb = 50 °C.
- Is the TDA2822D RoHS compliant?
