This is Audio Amplifier.
Part Number: TEA2025B
Function: Stereo Audio Amplifer
Package: PDIP 16 Pin type
Manufacturer: STMicroelectronics
Images:
Description
The TEA2025B is specifically designed for low-power audio applications and is commonly used in portable devices, such as radios, boomboxes, and small speakers.
It’s important to note that the TEA2025B is a low-power audio amplifier, suitable for small-scale audio systems. It may not provide sufficient power for larger speaker systems or high-volume applications. However, it can be an ideal choice for low-power audio amplification needs in portable and battery-operated devices.
Features
1. DUAL OR BRIDGE CONNECTION MODES
2. FEW EXTERNAL COMPONENTS
3. SUPPLY VOLTAGE DOWN TO 3V
4. HIGH CHANNEL SEPARATION
5. VERY LOW SWITCH ON/OFF NOISE MAX GAIN OF 45dB WITH ADJUST EXTERNAL RESISTOR
6. SOFT CLIPPING
Specifications:
1. Low Voltage Operation: It operates on a low supply voltage, typically between 3V and 15V, making it suitable for battery-powered devices.
2. Dual-Channel Design: It provides two independent audio channels, allowing it to drive a pair of speakers or stereo headphone outputs.
3. Internal Gain Control: The IC incorporates an internal gain control circuit, allowing the user to adjust the amplification level as per their requirements.
4. Thermal and Overload Protection: The device includes built-in thermal and overload protection circuits to prevent damage to the IC and connected speakers in case of excessive heat or overload conditions.
5. Simple Application: It requires minimal external components and has a straightforward application circuit, making it easy to use in various audio applications.
Block Diagram and Pinouts
Input Capacitor:
Input capacitor is PNP type allowing source to be referenced to ground. In this way no input coupling capacitor is required. However, a series capacitor (0.22 uF)to the input side can be useful in case of oise due to variable resistor contact.
Bootstrap:
The bootstrap connection allows to increase the output swing. The suggested value for the bootstrap capacitors (100uF) avoids a reduction of the output signal also at low frequenciesand low supply voltages.
TEA2025B Datasheet
