Filterless 2.5w Stereo Class D Audio Power Amplifier - National SemiconductorThe LM4674 is a single supply, high efficiency, 2.5W/
channel, filterless switching Audio Amplifier A low noise
PWM architecture eliminates the output Filter reducing ex-
ternal component count, board area consumption, system
cost, and simplifying design.
The LM4674 is designed to meet the demands of mobile
phones and other portable Communication devices. Operat-
ing from a single 5V supply, the device is capable of deliv-
ering 2.5W/channel of continuous output power to a 4 load
with less than 10% THD+N. Flexible power supply require-
ments allow operation from 2.4V to 5.5V.
The LM4674 features high efficiency compared to conven-
tional Class AB Amplifiers When driving and 8 speaker
from a 3.6V supply, the device features 85% efficiency at PO
= 500mW. Four gain options are pin selectable through the
GAIN0 and GAIN1 pins.
Output short Circuit Protection prevents the device from be-
ing damaged during fault conditions. Superior click and pop
suppression eliminates audible transients on power-up/down
and during shutdown. Independent left/right shutdown con-
trols maximizes power savings in mixed mono/stereo appli-
cations. By National Semiconductor Corporation
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Part | Manufacturer | Description | Datasheet | Samples | |
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LM4674TLX/NOPB | Texas Instruments | Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85 | |||
LM4674SQ/NOPB | Texas Instruments | Filterless 2.5 Stereo Class D Audio Power Amplifier 16-WQFN -40 to 85 | |||
LM4674ATLX/NOPB | Texas Instruments | Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85 | |||
LM4674ATL/NOPB | Texas Instruments | Filterless 2.5 Stereo Class D Audio Power Amplifier 16-DSBGA -40 to 85 |
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LM4674 Pb-Free | LM4674 Cross Reference | LM4674 Schematic | LM4674 Distributor |
LM4674 Application Notes | LM4674 RoHS | LM4674 Circuits | LM4674 footprint |