LM49352RLX/NOPB National Semiconductor, LM49352RLX/NOPB Datasheet - Page 82

• Manufacturer Part Number: LM49352RLX/NOPB
• Description: IC AMP AUDIO MONO D1.4W 36USMD
• Manufacturer: National Semiconductor
• Series: Boomer®, PowerWise®r
• Type: Class Dr

Specifications of LM49352RLX/NOPB

• Output Type: 1-Channel (Mono) with Mono and Stereo Headphones
• Max Output Power X Channels @ Load: 1.4W x 1 @ 8 Ohm; 65mW x 2 @ 32 Ohm
• Features: Depop, Differential Inputs, I²C, I²S, Microphone, Shutdown, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 36-MicroSMDxt
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Other names: LM49352RLX

Digital Audio Compressor
The LM49352 features a digital audio compressor on both the DAC and ADC paths. The compressor works by reducing the level
of the audio signal that is higher than the level set by the audio compressor threshold level (THRESHOLD) by a fixed ratio (com-
pressor output / compressor input) that is set by a predetermined audio compression ratio (RATIO). Higher compression ratios
result in more compression as shown in Figure 24. The audio compressor can be used in conjunction with the ALC to limit audio
peaks that the ALC may not be fast enough to react to.
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FIGURE 25. Audio Compressor Effect
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