The LM48820TM/NOPB is a high-performance, ultra-low noise stereo headphone amplifier produced by Texas Instruments. Designed to provide optimal audio performance for portable devices, this amplifier integrates a noise rejection feature that ensures a clear, high-quality sound experience for the end user.
Key Features
- Ultra-Low Noise: The LM48820TM/NOPB boasts an exceptional signal-to-noise ratio, minimizing background noise and hiss to deliver a crystal-clear audio output.
- Power Efficiency: This amplifier is designed for battery-powered devices, with a low quiescent current that extends battery life without compromising audio quality.
- Advanced Pop & Click Suppression: The built-in pop and click suppression circuitry ensures smooth turn-on and turn-off transitions, preventing unwanted noise spikes that can occur with power cycling.
- Flexible Power Supply: It operates over a wide range of power supply voltages, from 2.7V to 5.5V, making it versatile for use in various portable applications.
Applications
The LM48820TM/NOPB is ideal for a variety of portable audio applications, including:
- Mobile Phones
- Portable Media Players
- Notebook Computers
- Portable Gaming Devices
Technical Specifications
| Parameter |
Value |
| Output Power |
15 mW per channel into 16 Ohms |
| THD+N |
0.03% at 1 kHz |
| Signal-to-Noise Ratio (SNR) |
98 dB |
| Supply Voltage |
2.7V to 5.5V |
| Operating Temperature |
-40°C to 85°C |
Quality and Reliability
The LM48820TM/NOPB is available in a micro SMD package and is characterized for operation over the extended industrial temperature range of -40°C to 85°C. Its reliability and performance are backed by Texas Instruments' commitment to quality, making it a trusted choice for designers looking to enhance the audio capabilities of their portable devices.