LM49250 - Enhanced Emissions Suppression Stereo Class D Audio Sub-System

National Semiconductor

Datasheet Details

The LM49250 is a fully integrated audio subsystem designed for stereo cell phone applications.

a new circuit technology that utilizes a charge pump to generate a negative supply voltage. This allows the headphone outputs to be biased about ground, thereby eliminating the output-coupling capacitors. For improved noise immunity, the LM49250 features fully differential left, right and mono inputs. The three inputs can be mixed/multiplexed to any output combination of the loudspeaker, headphone or earpiece amplifiers. The left and right differential inputs can be used as separate single-ended.

📁 Related Datasheet

LM49251 - Stereo Audio Subsystem (Texas Instruments)
LM49200 - Stereo Class AB Audio Subsystem (Texas Instruments)
LM49200TLEVAL - Stereo Class AB Audio Subsystem (Texas Instruments)
LM4924 - Stereo Headphone Audio Amplifier (Texas Instruments)
LM4927 - 2.5 Watt Fully Differential Audio Power Amplifier (Texas Instruments)
LM49270 - Filterless 2.2W Stereo Class D Audio Subsystem (Texas Instruments)
LM4928 - 1.2 Watt Stereo Fully Differential Audio Amplifier (Texas Instruments)
LM4929 - Stereo 40mW Low Noise Headphone Amplifier (Texas Instruments)

📌 All Tags

National Semiconductor LM49250-like datasheet

LM4925 - 2 Cell/ Single Ended Output 40mW Stereo Headphone Audio Amplifier
LM4920 - Stereo Headphone Amplifier
LM4921 - Low Voltage I2S 16-Bit Stereo DAC
LM4922 - 80mW Stereo Headphone Amplifier
LM4923 - 1.1 Watt Fully Differential Audio Power Amplifier
LM4926 - Ground-Referenced and Ultra Low Noise - Fixed Gain - 80mW Stereo Headphone Amplifier

LM49250 Stock/Price