LME49600TS/NOPB vs TDA7376B
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | STMicroelectronics |
| Description | IC AMP CLASS AB MONO 500MW TO263 | IC AMP AB STEREO 40W 15MULTIWATT |
| Package | Tube | Tube |
| Series | - | - |
| Type | Class AB | Class AB |
| Features | Short-Circuit and Thermal Protection | Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Standby |
| Voltage - Supply | ±2.25V ~ 18V | 8V ~ 18V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 105°C (TA) |
| Mounting Type | Surface Mount | Through Hole |
| Package / Case | TO-263-6, D²Pak (5 Leads + Tab), TO-263BA | Multiwatt-15 (Vertical, Bent and Staggered Leads) |
| Supplier Device Package | DDPAK/TO-263-5 | 15-Multiwatt |
| Output Type | 1-Channel (Mono) | 2-Channel (Stereo) |
| Max Output Power x Channels @ Load | 500mW x 1 @ 32Ohm | 40W x 2 @ 4Ohm |
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1. 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.
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2. What is a Class D audio amplifier and what are its advantages?
Class D audio amplifiers work through Pulse Width Modulation (PWM) technology and have extremely high efficiency (typically up to 90% or higher), making them suitable for use in portable audio equipment or high-efficiency sound systems. It generates less heat because it reduces energy consumption.
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3. 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.
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4. What should the frequency response range of an audio amplifier be?
The frequency response range of a good quality audio amplifier is usually between 20Hz and 20kHz, which is the typical frequency range that the human ear can hear. A wider frequency response ensures that the audio amplifier can accurately reproduce both low and high frequency details.
