Overview
The TEA2025D, manufactured by STMicroelectronics, is a monolithic integrated circuit designed for use as a dual or bridge power audio amplifier. It is particularly suited for applications in portable radio cassette players and other compact audio devices. The IC is available in two package types: the 12+2+2 PowerDIP16 (TEA2025B) and the 12+4+4 SO20 (TEA2025D).
Key Specifications
| Parameter | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| VS Supply Voltage | 3 | 15 | V | ||
| IO Output Peak Current | 1.5 | A | |||
| TJ Junction Temperature | 150 | °C | |||
| Tstg Storage Temperature | 150 | °C | |||
| IQ Quiescent Current | VCC = 9V | 35 | 50 | mA | |
| VO Quiescent Output Voltage | VCC = 9V | 4.5 | V | ||
| AV Voltage Gain (Stereo) | VCC = 9V | 43 | 45 | 47 | dB |
| AV Voltage Gain (Bridge) | VCC = 9V | 49 | 51 | 53 | dB |
| PO Output Power (Stereo, RL = 4Ω, VCC = 6V) | 1 | W | |||
| PO Output Power (Stereo, RL = 4Ω, VCC = 9V) | 2.3 | W | |||
| PO Output Power (Stereo, RL = 4Ω, VCC = 3V) | 0.1 | W | |||
| THD Total Harmonic Distortion | VCC = 9V, RL = 4Ω | 0.3 | 1.5 | % |
Key Features
- Dual or bridge connection modes
- Few external components required
- Supply voltage range from 3V to 15V
- High channel separation
- Very low switch-on/off noise
- Maximum gain of 45 dB with adjustable external resistor
- Soft clipping
- Thermal protection
Applications
The TEA2025D is primarily designed for use in portable audio devices such as radio cassette players, portable speakers, and other compact audio equipment. Its dual or bridge configuration and low power consumption make it suitable for battery-powered devices where space and efficiency are critical.
Q & A
- What are the package options for the TEA2025D?
The TEA2025D is available in the 12+4+4 SO20 package, while the TEA2025B is available in the 12+2+2 PowerDIP16 package.
- What is the supply voltage range for the TEA2025D?
The supply voltage range is from 3V to 15V.
- What are the output power specifications for the TEA2025D in stereo mode?
In stereo mode, the output power is 1W at VCC = 6V, RL = 4Ω; 2.3W at VCC = 9V, RL = 4Ω; and 0.1W at VCC = 3V, RL = 4Ω.
- Does the TEA2025D have thermal protection?
Yes, the TEA2025D includes thermal protection to prevent device damage from excessive junction temperatures.
- What is the maximum gain of the TEA2025D?
The maximum gain is 45 dB, which can be adjusted using an external resistor.
- How does the TEA2025D handle switch-on/off noise?
The TEA2025D is designed to have very low switch-on/off noise, enhancing the overall audio quality.
- What is the quiescent current of the TEA2025D?
The quiescent current is typically 50 mA at VCC = 9V.
- What are the recommended external components for the TEA2025D?
The recommended external components include input capacitors, bootstrap capacitors, and output decoupling capacitors. Specific values are provided in the datasheet.
- How does the TEA2025D handle high channel separation?
The TEA2025D is designed to provide high channel separation, ensuring minimal crosstalk between channels.
- What is the total harmonic distortion (THD) of the TEA2025D?
The THD is typically 0.3% to 1.5% at VCC = 9V, RL = 4Ω.
