EUA2075 Datasheet, PDF (1/1 Pages) Eutech Microelectronics Inc – 2.8W/CH Stereo Filterless Class-D Audio Amplifier with 64-Step DC Volume Control, AGC and Headphone Output

EUA2075
2.8W/CH Stereo Filterless Class-D Audio Amplifier with
64-Step DC Volume Control, AGC and Headphone Output
DESCRIPTION
The EUA2075 is a high efficiency, 2 channel bridged-tied
load (BTL), class-D audio power amplifier with headphone
output. Operating from a 5V power supply, EUA2075 is
capable of delivering 2.8W/channel of continuous output
power to a 4Ω load with 10% THD+N. The EUA2075
features an advanced 64-step DC volume control which
offers a range of speaker gain from -70dB to 20dB and a
range of HP gain from -80dB to 3.5dB. The AGC detects
output signal clip due to the over level input signal and
suppresses it automatically. Moreover the AGC can adapt
the output clip caused by power supply voltage down with
battery. The new filter-less architecture allows the device
to drive the speaker directly, without low-pass output filters,
which will save system cost and PCB area.
The EUA2075 also features short-circuit and thermal
protection preventing the device from being damaged
during a fault condition. The EUA2075 is available in
24-pin SOP and 20-pin 4×4 TQFN package.
Typical Application Circuit
FEATURES
Wide Supply Voltage: 2.7V to 5.5V
Unique Modulation Scheme Reduces EMI Emission
2.8W/ch into an 4Ω Load From 5V Supply
64-Step DC Volume Control
Headphone Output Function
Auto Gain Control
Thermal and Short-Circuit Protection
Integrated Click and Pop Suppression
Available in SOP-24 and TQFN-20 Packages
RoHS Compliant and 100% Lead(Pb)-Free
Halogen-Free
APPLICATIONS
LCD Monitors/TVs
All-in-One PCs
Portable Audio
Notebook PC
DS2075 Ver 1.0 July 2014
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