LM4876MM/NOPB vs ISL99201IRTDZ-TK
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | National Semiconductor | Intersil |
| Description | LM4876 1.1W AUDIO POWER AMPLIFIE | IC AMP AUDIO 1.5W MONO D 8TDFN |
| Package | Bulk | 8-WDFN Exposed Pad |
| Series | Boomer® | - |
| Type | Class AB | Class D |
| Features | Shutdown, Thermal Protection | Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown |
| Voltage - Supply | 2V ~ 5.5V | 2.4 V ~ 5.5 V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 10-TFSOP, 10-MSOP (0.118\", 3.00mm Width) | 8-WDFN Exposed Pad |
| Supplier Device Package | 10-VSSOP | 8-TDFN (3x3) |
| Output Type | 1-Channel (Mono) | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 1.5W x 1 @ 8Ohm | 1.4W x 1 @ 8 Ohm |
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1. 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. -
2. 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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3. How to choose a suitable audio amplifier?
When choosing an audio amplifier, factors such as output power, total harmonic distortion (THD), signal-to-noise ratio (SNR), efficiency, impedance matching (speaker impedance), and power consumption should be taken into consideration to ensure that it is well-matched with the speakers and audio source equipment.
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4. What is the signal-to-noise ratio (SNR) of an audio amplifier?
Signal-to-noise ratio (SNR) is a measure of the ratio of the audio signal to the background noise, with higher values indicating less noise in the audio signal. A high SNR usually means clearer sound output.
