LME49600TS/NOPB vs TDA7851F
| Part Number |
|
|
| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | STMicroelectronics |
| Description | IC AMP CLASS AB MONO 500MW TO263 | IC AMP AB QUAD 75W 25FLEXIWATT |
| Package | Tube | Tape & Reel (TR) |
| Series | - | - |
| Type | Class AB | Class AB |
| Features | Short-Circuit and Thermal Protection | Mute, Short-Circuit and Thermal Protection, Standby |
| Voltage - Supply | ±2.25V ~ 18V | 8V ~ 18V |
| Operating Temperature | -40°C ~ 85°C (TA) | - |
| Mounting Type | Surface Mount | Through Hole |
| Package / Case | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | 25-Flexiwatt (Formed Leads) |
| Supplier Device Package | DDPAK/TO-263-5 | 25-Flexiwatt (Vertical) |
| Output Type | 1-Channel (Mono) | 4-Channel (Quad) |
| Max Output Power x Channels @ Load | 500mW x 1 @ 32Ohm | 75W x 4 @ 2Ohm |
-
1. What is an audio amplifier and what does it do?
An audio amplifier is a device that amplifies an audio signal, such as music or speech, to a higher voltage or current level to drive speakers or headphones, ensuring that the sound remains clear and accurate when played at higher volumes.
-
2. What types of audio amplifiers are available?
Common types of audio amplifiers include:
Class A amplifiers: have the highest sound quality, but are less efficient.
Class B amplifiers: More efficient, but may produce crossover distortion.
Class AB amplifiers: between Class A and Class B with good balance.
Class D amplifier: highest efficiency, suitable for portable devices, but slightly lower sound quality. -
3. What is a power amplifier and how is it different from an audio amplifier?
A power amplifier is a type of audio amplifier designed to drive high-power loads such as speakers. It is capable of amplifying audio signals to a sufficient power output to drive speakers to produce greater volume.
-
4. Does the audio amplifier need to match the impedance of the speakers?
Yes, the output impedance of the audio amplifier should match the impedance of the speaker. Typically speakers have an impedance of 4Ω, 8Ω or 16Ω. Matching the impedance ensures that the amplifier delivers maximum power and the best sound quality from the speaker.
