TPA4861DR vs NJM2113M
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | NJR Corporation/NJRC |
| Description | IC AMP CLASS AB MONO 1.1W 8SOIC | IC AMP CLASS AB MONO 400MW 8DMP |
| Package | -Reel® | Tape & Reel (TR) |
| Series | - | - |
| Type | Class AB | Class AB |
| Features | Short-Circuit and Thermal Protection, Shutdown | Standby |
| Voltage - Supply | 2.7V ~ 5.5V | 2V ~ 16V |
| Operating Temperature | -40°C ~ 85°C (TA) | -20°C ~ 75°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.154\", 3.90mm Width) | 8-SOIC (0.209\", 5.30mm Width) |
| Supplier Device Package | 8-SOIC | 8-DMP |
| Output Type | 1-Channel (Mono) | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 1.1W x 1 @ 8Ohm | 400mW x 1 @ 100Ohm |
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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. 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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3. What is the Total Harmonic Distortion (THD) of an audio amplifier?
Total Harmonic Distortion (THD) is the distortion component introduced by an audio amplifier during the signal amplification process. the lower the THD, the closer the amplified audio signal will be to the original signal, and usually high quality audio amplifiers have a THD value of less than 1%.
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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.
