Allicdata Part #: | TDA7562B-ND |
Manufacturer Part#: |
TDA7562B |
Price: | $ 3.95 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | STMicroelectronics |
Short Description: | IC AMP QUAD MULTIFUNC FLEXIWATT2 |
More Detail: | Amplifier IC 4-Channel (Quad) Class AB 27-Flexiwat... |
DataSheet: | TDA7562B Datasheet/PDF |
Quantity: | 1000 |
357 +: | $ 3.58786 |
Series: | -- |
Packaging: | Tube |
Part Status: | Active |
Type: | Class AB |
Output Type: | 4-Channel (Quad) |
Max Output Power x Channels @ Load: | 60W x 4 @ 2 Ohm |
Voltage - Supply: | 8 V ~ 18 V |
Features: | I²C, Mute, Short-Circuit and Thermal Protection, Standby |
Mounting Type: | Through Hole |
Operating Temperature: | -40°C ~ 105°C (TA) |
Supplier Device Package: | 27-Flexiwatt (Vertical) |
Package / Case: | 27-Flexiwatt (Formed Leads) |
Base Part Number: | TDA7562B |
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(20)TDA7562B is a high performance BTL audio amplifier, which is made under the cooperation of STMicroelectronics and Pennisula Design. This amplifier is widely applied in audio circuits of various electronic products, such as car audio systems, portable audio systems, mobile phones, etc. In this article, we will discuss the application field and working principle of TDA7562B.
Application field
First of all, let¡¯s get an overview of the application field of TDA7562B. This chip is specialized in audio amplifier, thus its main application field is audio related products. It¡¯s mainly used for improving the performance of smartphone audio, car audio, portable audio devices, Bluetooth speakers, home theater systems, and other kinds of audio products.
The TDA7562B is designed to be integrated into the system with maximum flexibility. It can be configured to drive a single speaker in a mono mode or two speakers in a BTL operation. Its common-mode rejection ratio is up to 50dB, meanwhile, its operation current consumption is just 8mA, which is quite energy efficient.
Working Principle
TDA7562B is mainly composed of two parts: input stages and output stages.
Input Stages
The input stage includes two high-performance differential amplifiers. The R1 and R2 resistor sets build a voltage divider network to set the voltage gain of the amplifier. The two differential amplifiers improve the signal to noise ratio of the amplifier.
Output Stages
The output stage is composed of four transistors which are driven by two matched pairs of PMOS/NPN pairs. The second pair of transistors is utilized to drive the output current and to control the gain of the amplifier. The power supply connection of the amplifier can be done through the Vcc and GND pins.
To guarantee that the bridge is fully balanced and maximizes output power, the TDA7562B features a special circuitry that automatically balances the load of the two bridged channels. This circuitry can sense the load variations in order to maintain the full bridge working condition.
Conclusion
To sum up, we can see that TDA7562B is a widely used audio amplifier. It has excellent performance due to the high-performance differential amplifiers and the automatically balanced load in the output stage. Therefore, it is widely used to enhance audio performance in a variety of products.
The specific data is subject to PDF, and the above content is for reference
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