LM4819MX/NOPB vs TS4902IST
| Part Number |
|
|
| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | National Semiconductor | STMicroelectronics |
| Description | LM4819 350MW AUDIO AMPLIFIER WIT | IC AMP AB MONO 700MW 8MINISO |
| Package | Bulk | Cut Tape (CT) |
| Series | Boomer® | - |
| Type | Class AB | Class AB |
| Features | Depop, Differential Inputs, Shutdown | Depop, Standby, Thermal Protection |
| Voltage - Supply | 2V ~ 5.5V | 2.2V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 8-SOIC (0.154\", 3.90mm Width) | 8-TSSOP, 8-MSOP (0.118\", 3.00mm Width) |
| Supplier Device Package | 8-SOIC | 8-MiniSO |
| Output Type | 1-Channel (Mono) | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 350mW x 1 @ 16Ohm | 700mW x 1 @ 8Ohm |
-
1. What is an audio amplifier and what does it do?
An audio amplifier is a device that amplifies an audio signal, such as music or speech, to a higher voltage or current level to drive speakers or headphones, ensuring that the sound remains clear and accurate when played at higher volumes.
-
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.
-
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.
