TDA7293V Audio Amplifiers

Technical Specifications of TDA7293V

Datasheet	TDA7293V datasheet
Category	Integrated Circuits (ICs)
Family	Linear – Amplifiers – Audio
Manufacturer	STMicroelectronics
Series	–
Packaging	Tube
Part Status	Active
Type	Class AB
Output Type	1-Channel (Mono)
Max Output Power x Channels @ Load	100W x 1 @ 4 Ohm
Voltage – Supply	±12 V ~ 50 V
Features	Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Standby
Mounting Type	Through Hole
Operating Temperature	0°C ~ 70°C (TA)
Supplier Device Package	15-Multiwatt
Package / Case	Multiwatt-15 (Vertical, Bent and Staggered Leads)

TDA7293V Introduction

The TDA7 293V is an audio class AB amplifier optimized for high-fidelity systems such as home stereos, powered loudspeakers, and premium televisions. This monolithic integrated circuit can provide high power to low impedance loads over a wide input voltage range, making it a flexible and adaptable choice for audio amplification. The combination of BCD technology with a DMOS power stage allows for a high output power level with minimal distortion and noise, guaranteeing a high-quality listening experience. Features including thermal shutdown and an in-built mute function guarantee safety and dependability. Whether you need to boost a poor audio signal or improve your system’s audio quality, the TDA7 293V is a fantastic option.

TDA7293V Description

An audio amplifier of the class AB variety, the TDA7 293V is designed specifically for high-fidelity components and systems, including home stereos, powered loudspeakers, and luxury televisions. This monolithic integrated circuit can give high power to low-impedance loads over a wide input voltage range. As a result, it is an excellent choice for audio amplification since it is both flexible and adaptive. The utilization of BCD technology in conjunction with a DMOS power stage makes it possible to achieve a high output power level with a small amount of distortion and noise, ensuring a listening experience of superior quality. Features such as thermal shutdown and an integrated mute function ensure the user’s continued protection and dependability when the device is in operation. The TDA7 293V is an excellent choice if you want to improve the quality of the audio produced by your system in general or if you need to strengthen a weak audio signal.

TDA7293V Features

• A wide range of applications is possible due to the high working voltage range (50 V).
• Power delivery is stable and efficient with the DMOS power stage.
• Outstanding output power for high-quality audio reproduction (100 W into 8 @ THD = 10%, with VS, = 40 V).
• Convenient control options include the mute and standby functions.
• A smooth change between operating modes is guaranteed by the absence of a switch on/off the noise.
• Excellent audio quality is delivered by extremely low distortion and noise levels.
• Improved safety by being short-circuit protected (when no input signal is applied).
• The system is shielded from overheating by the thermal shutdown.
• A clip detector alerts the user of probable audio distortion and clipping.
• Thanks to its modular design, the device is easily adaptable to various applications, which makes it simple to link multiple devices in parallel to drive extremely low impedances.

TDA7293V Circuit Description

The demand for high-power, low-cost monolithic audio amplifiers that can hold their own against the best discrete consumer electronics designs has been rising. This linear integrated circuit is notoriously difficult to realize using conventional bipolar technology because of the second breakdown phenomenon. It limits the maximum output power that can be achieved by limiting the safe operating area (SOA) of the power devices in the presence of highly reactive loads. The complexity of circuit design and architecture is further increased by the need for sophisticated protection circuitry to enable full SOA use. Power MOS devices, which are resistant to secondary breakdown, are very desirable as a means of addressing these major drawbacks. Therefore, BCDII 100/120, a hybrid bipolar-MOS high-voltage technology, was employed in the design of the aforementioned device.

Output Stage

In constructing an operational power amplifier, the most important design work is realizing the output stage. This is true regardless of the technology that is used.

Low harmonic distortion, acceptable behavior over frequency response, and accurate control of quiescent current even at very high voltage and current levels are the requirements for this high-power, large-signal buffer. Other needs for this buffer include low harmonic distortion. To fulfill the aforementioned requirements and make it possible to set up a quiescent current arrangement that is both effective and uncomplicated, differential amplifier A is used to provide linearizing feedback on a local scale. However, correct biasing of the power output transistors is not enough to guarantee that there will be no crossover distortion. This condition must also be met.

Even though the DC transfer characteristic of the stage is capable of linearization, the system’s dynamic behavior is something that must still be considered. The compensation method makes use of the direct connection that the Miller capacitor has at the amplifier’s output to provide a local AC feedback route surrounding the output stage itself. This route is extremely helpful in reducing the amount of distortion that is caused by the final stage.

Protection

To prevent damage to the device from a short circuit or overload, special care must be taken when building a power IC. The SOA of power DMOS transistors is restricted solely by a maximum dissipation curve that varies with the duration of the applied stimulus because of the lack of the 2nd breakdown phenomena. Combining a standard SOA protection circuit with a revolutionary local temperature sensing mechanism that “dynamically” manages the maximum dissipation allows the power transistors to function to their full potential inside this device’s protection system. The device also has a thermal shutdown circuit, which puts it into a muting state (@ T = 150 °C) and then into stand-by (@ Tj = 160 °C), in addition to the overload protection described above. Every pin is shielded to prevent electrostatic discharges.

Other Features

The standby mode and the silent mode of the device each have their own dedicated input port that is compatible with CMOS logic. The amplifier’s on/off switching circuits have been painstakingly fine-tuned to remove any and all forms of uncontrolled auditory transient at the output.

Conclusion

Transform your audio experience with the powerful and crystal-clear TDA7 293V class D amplifier from STMicroelectronics. This amplifier boasts a current handling capacity of up to 10,000 mA and a maximum load resistance of 8 Ohms, breathing new life into your once-weak audio signals. With the versatility to operate on dual power supplies with a voltage range of ±15, ±18, ±24, or ±28 V, this 1-channel mono output amplifier is designed for efficiency and effectiveness, boasting a typical Power Supply Rejection Ratio (PSRR) of 75 dB. Experience audio like never before with the TDA7 293V class D amplifier. Contact ICRFQ today to get the best product at an affordable price.

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