LM49150 Overview
Key Specifications
Mount Type: Surface Mount
Pins: 20
Max Voltage (typical range): 5.5 V
Min Voltage (typical range): 1.7 V
Description
The LM49150 is a fully integrated audio subsystem designed for portable handheld applications such as cellular phones. Part of National's Power Wise® product family, the LM49150 consumes very low power in the various modes of operation and still providing great audio performance.
Key Features
- a patented, ultra low EMI PWM architecture that significantly reduces RF emissions while preserving audio quality
- The LM49150 features a fully differential mono input, and two single-ended stereo inputs
- The three inputs can be mixed/ multiplexed to either the speaker or headphone amplifiers
- Each input channel has an independent, 32-step digital volume control
- The headphone output stage features an additional, 8-step gain control, while the speaker output stage has a selectable 6dB or 12dB gain
