STMicroelectronics Archives - Page 10 of 115

Part Number: L293D

Function: PUSH-PULL FOUR CHANNEL DRIVER WITH DIODES

Package: DIP 16 Pin Type

Pinout

L293D image
Description:

A push-pull four-channel driver, also known as a quad push-pull driver, is an electronic circuit or integrated circuit (IC) designed to drive multiple output channels in a push-pull configuration. It is commonly used in audio amplifiers and other applications where multiple signals need to be amplified and delivered to corresponding output devices.

The push-pull configuration consists of two complementary output stages, typically one NPN (negative-positive-negative) and one PNP (positive-negative-positive) transistor. Each output stage is responsible for amplifying and driving one half of the audio waveform. When one transistor is conducting, the other is in a non-conducting state, allowing for efficient amplification and improved output signal quality.

The Device is a monolithic integrated high voltage, high current four channel driver designed to accept standard DTL or TTL logic levels and drive inductive loads (such as relays solenoides, DC and stepping motors) and switching power transistors.

To simplify use as two bridges each pair of channels is equipped with an enable input. A separate supply input is provided for the logic, allowing operation at a lower voltage and internal clamp diodes are included.

This device is suitable for use in switching applications at frequencies up to 5 kHz.

Features

1. 600mA OUTPUT CURRENT CAPABILITY PER CHANNEL
2. 1.2A PEAK OUTPUT CURRENT (non repetitive) PER CHANNEL
3. ENABLE FACILITY
4. OVERTEMPERATURE PROTECTION
5. LOGICAL “0” INPUT VOLTAGE UP TO 1.5 V (HIGH NOISE IMMUNITY)
6. INTERNAL CLAMP DIODES

This type of driver is commonly used in multi-channel audio amplifiers found in home theater systems, car audio systems, professional audio equipment, and other applications where multiple channels need to be amplified and controlled independently. It allows for precise control and amplification of each channel’s signal, resulting in accurate reproduction and improved audio performance.

L293D Datasheet PDF

Other data sheets are available within the file: L293DD

What is TDA2822M?

This IC is a dual low-voltage power amplifier IC designed for audio applications.

This amplifier IC has several features that make it an excellent choice for audio amplification applications. It has a low voltage and low current operation, which makes it suitable for battery-powered devices. It also has low harmonic distortion and a low noise floor, which results in high-fidelity sound reproduction. Additionally, it has built-in thermal and short-circuit protection, which helps to prevent damage to the IC and the connected components.

Part Number: TDA2822M

Function: DUAL LOW-VOLTAGE POWER AMPLIFIER

Package: DIP 8 Pin

Manufacturer: ST Microelectronics

Image

Description

The TDA2822M is a monolithic integrated circuit in 8 lead Minidip package. It is intended for use as dual audio power amplifier in portable cassette players and radios.

One of the key advantages of the TDA2822M over the LM386 is its dual-channel design, which allows it to drive two separate speakers or headphone channels. Additionally, its low voltage and low current operation make it a suitable choice for battery-powered applications. However, its maximum output power of 1.5 watts per channel may not be sufficient for high-power audio applications.

Advantages:

1. Low harmonic distortion and a low noise floor.

2. Built-in thermal and short-circuit protection.

3. Simple circuit design and requires minimal external components.

4. Built-in gain control feature that allows the user to adjust the voltage gain by changing the value of a resistor.

5. ommonly used in portable audio devices, headphones, and small speaker systems.

6. Dual-channel design, making it suitable for stereo applications.

7. Low voltage and low current operation, which makes it suitable

8. Simple circuit design and requires minimal external components, making it easy to use.

Pinout:

Features

1. SUPPLY VOLTAGE DOWN TO 1.8V

2. LOW CROSSOVER DISTORSION

3. LOW QUIESCENT CURRENT

4. BRIDGE OR STEREO CONFIGURATION

Absolute Maximum Rating:

1. Supply Voltage : Vs = 15V

2. Peak Output Current : Io = 1 A

3. Total Power Dissipation at Tamb = 50°C : Ptot = 1W

FAQs:

1. What is the difference between TDA2822 and TDA2822M?

TDA2822 and TDA2822M are very similar, but TDA2822M has a slightly different pin configuration and a different package type. TDA2822M is also designed for low-voltage operation, while TDA2822 can operate at higher voltages.