TAS5612APHDR vs LM4931ITL/NOPB
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | National Semiconductor |
| Description | IC AMP D MONO/STER 250W 64HTQFP | LM4931 AUDIO SUBSYSTEM WITH MONO |
| Package | Cut Tape (CT) | Bulk |
| Series | PurePath™ HD | Boomer® |
| Type | Class D | Class D |
| Features | Depop, Jinftrytal Inputs, Short-Circuit and Thermal Protection, Shutdown | ADC, DAC, Depop, I²C, I²S, Microphone, Mute, PCM, Shutdown, SPI, Standby, Volume Control |
| Voltage - Supply | 16V ~ 34.1V | 2.7V ~ 5V |
| Operating Temperature | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 64-TQFP Exposed Pad | 42-WFBGA, DSBGA |
| Supplier Device Package | 64-HTQFP (14x14) | 42-DSBGA |
| 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 | 1.1W x 1 @ 8Ohm; 26mW x 2 @ 32Ohm |
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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 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 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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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.
