Overview
The LM4889MM/NOPB is a 1 Watt audio power amplifier manufactured by Texas Instruments. Designed for low-voltage applications, this Class-AB amplifier is ideal for portable devices and consumer electronics. Its compact VSSOP-8 package and efficient performance make it a competitive choice in the audio amplifier market, targeting applications such as smartphones, tablets, and portable audio players.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Power | 1 | W | @ 8 Ohms |
| THD + Noise | 0.1 | % | @ 1 kHz |
| Supply Voltage | 2.2 - 5.5 | V | |
| Operating Temperature | -40 to 85 | °C | |
| Package | VSSOP-8 | Surface Mount | |
| Load Impedance | 8 | Ohms |
Key Features
- Ultra-low voltage operation (2.2V to 5.5V) for portable devices.
- Class-AB architecture ensures high efficiency and low distortion.
- Compact VSSOP-8 package saves board space.
- No external coupling capacitors or bootstrap capacitors required.
- Improved pop and click circuitry for noise-free operation.
Applications
The LM4889MM/NOPB is widely used in portable audio devices, including smartphones, tablets, and MP3 players. Its low power consumption and compact design make it suitable for battery-powered applications. Additionally, it is used in small speakers, headphones, and other consumer electronics where space and efficiency are critical.
Q & A
1. What is the output power of the LM4889MM/NOPB?
The output power is 1 Watt at an 8-Ohm load.
2. What is the operating voltage range?
The operating voltage ranges from 2.2V to 5.5V.
3. What is the THD + Noise level?
The THD + Noise is 0.1% at 1 kHz.
4. What package does the LM4889MM/NOPB use?
It comes in a VSSOP-8 surface-mount package.
5. Is this amplifier suitable for portable devices?
Yes, its low voltage operation and compact design make it ideal for portable electronics.
6. Does it require external capacitors?
No, it does not require external coupling or bootstrap capacitors.
7. What is the operating temperature range?
It operates from -40°C to 85°C.
8. Can it drive capacitive loads?
Yes, it can drive capacitive loads up to 500 pF.
9. What is the typical quiescent current?
The typical quiescent current is 5 mA.
10. What are the key applications of this amplifier?
Key applications include smartphones, tablets, portable speakers, and headphones.
