TDA8933T/N1,118 vs LM4928TL/NOPB
| Part Number |
|
|
| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | NXP USA Inc. | Texas Instruments |
| Description | IC AMP CLSS D MONO/STER 32W 32SO | IC AMP CLASS AB STER 2.2W 16USMD |
| Package | Tape & Reel (TR) | Tape & Reel (TR) |
| Series | - | Boomer® |
| Type | Class D | Class AB |
| Features | Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection | Depop, Differential Inputs, Shutdown, Thermal Protection |
| Voltage - Supply | 10V ~ 36V, ±5V ~ 18V | 2.4V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 32-SOIC (0.295\", 7.50mm Width) | 16-WFBGA, DSBGA |
| Supplier Device Package | 32-SO | 16-DSBGA |
| Output Type | 1-Channel (Mono) or 2-Channel (Stereo) | 2-Channel (Stereo) |
| Max Output Power x Channels @ Load | 32W x 1 @ 16Ohm; 15.7W x 2 @ 8Ohm | 2.2W x 2 @ 4Ohm |
-
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.
-
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.
-
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.
-
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.
