TAS5612APHDR vs LM4930LQ/NOPB
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | National Semiconductor |
| Description | IC AMP D MONO/STER 250W 64HTQFP | LM4930 AUDIO SUBSYSTEM WITH STER |
| Package | Cut Tape (CT) | Bulk |
| Series | PurePath™ HD | Boomer® |
| Type | Class D | Class AB |
| Features | Depop, Jinftrytal Inputs, Short-Circuit and Thermal Protection, Shutdown | DAC, Depop, Differential Inputs, I²S, Microphone, Mute, PCM, Shutdown, Standby, Volume Control |
| Voltage - Supply | 16V ~ 34.1V | 2.6V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C (TA) | -30°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 64-TQFP Exposed Pad | 44-WFQFN Exposed Pad |
| Supplier Device Package | 64-HTQFP (14x14) | 44-WQFN (7x7) |
| Output Type | 1-Channel (Mono) or 2-Channel (Stereo) | 1-Channel (Mono) with Stereo Headphones |
| Max Output Power x Channels @ Load | 250W x 1 @ 2Ohm; 165W x 2 @ 3Ohm | 1W x 1 @ 8Ohm; 27mW x 2 @ 32Ohm |
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1. 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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2. 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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3. 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.
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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.
