TDA7265 - 25 +25W Stereo Audio Amplifier IC

3 December 2018 - 0 Comments

TDA7265 - 25 +25W Stereo Audio Amplifier IC

TDA7265 Pinout

TDA7265is a 25 Watt + 25 Watt stereo audio amplifier IC. The chip is aclass AB dual audio power amplifierin Multiwatt package specifically designed for high quality sound application as music centers and stereo TV sets.

Pin Configuration

TDA7265 is an eleven pin device as shown in pin diagram and function of each pin is described below.

Pin Number	Pin Name	Description
1	-Vs	Negative power supply is connected to this pin in dual supply mode operation of the chip
2	OUTPUT 1	Amplified output of channel A is provided at this pin
3	+Vs	Positive power supply is connected at this pin
4	OUTPUT 2	Amplified output of channel B is provided at this pin
5	MUTE	这个针是拉低到禁用音频输出
6	-Vs	Negative power supply is connected to this pin in dual supply mode operation of the chip
7	IN+(2)	Non-inverting input of channel B amplifier in the chip
8	IN-(2)	Inverting input of channel B amplifier in the chip
9	GND	This pin is connected to the ground
10	IN+(1)	Inverting input of channel A amplifier in the chip
11	IN+(1)	Non-inverting input of channel A amplifier in the chip

Features and Electrical characteristics

高输出功率:25 + 25 W @ RL = 8Ω,Vs =±20V
Wide operating supply voltage range
Output short circuit protection
Thermal overload protection
Very low number of components required to get the amplifier working
No pop at turn-on/off
Mute enable pin available
Stand-by feature (low Iq)
Split supply
Operating voltage range: ±5 to ±25V
Maximum supply voltage:±25V
Maximum repetitive current allowed to draw through each output: 4.5A
Total power dissipation:30W
Operating temperature: -20°C to +85°C
Storage Temperature: -40°C to +150°C

Where to use TDA7265

TDA7265 is basically used in applications wherehigh quality audio power amplificationand high efficiency both are required. The device being class AB dual audio power amplifier specifically designed for such high quality sound applications. With high power output capacity the chip can also be used for driving loud speakers and woofers.

How to use TDA7265

There is no need to design new circuits for the device TDA7265 as the application circuit diagram for the chip is already given in thedatasheetof the component. The design of application circuit is optimized for best performance and so using it in applications is ideal. All you need to do is connect the components as given in the circuit diagram to get the amplifier working.

TDA7265 Audio Amplifier Circuit Diagram

The above circuit is powered from two power supply units, one being positive voltage +Vs and other being negative voltage -Vs. The mute is triggered low from a microprocessor to disable output under requirement. Here the chip drives a two 25Watt speaker to its peak. The audio input for channel A is given at pin7 and the amplified output is listened though LEFT speaker. Similarly audio input for channel B is given at pin11 and the amplified output is listened though RIGHT speaker.

TDA7265 Single Supply Audio Amplifier Circuit

Here TDA7265 is powered from single supply voltage source +Vs and the mute is triggered low by a separate control unit. As above the chip drives a two 25Watt speaker to its peak here. The audio input for both channels and amplified outputs are provided the same as dual supply operation.

There are other applications circuits similar to the above one in the datasheet to provide additional circuit configurations for the user. The user can use those configurations to design his applications.