EUA2035
3W/CH Stereo Filterless Class-D Audio Amplifier with
64-Step DC Volume Control, AGC and Headphone Output
DESCRIPTION
The EUA2035 is a high efficiency, 2 channel bridged-tied
load (BTL), class-D audio power amplifier with headphone
output. Operating from a 5V power supply, EUA2035 is
capable of delivering 3W/ channel of continuous output
power to a 4 load with 10% THD+N. The EUA2035
features an advanced 64-step DC volume control which
offers a range of speaker gain from -70dB to 25dB and a
range of HP gain from -95dB 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 filterless architecture allows the device to
drive the speaker directly, without low-pass output filters,
which will save system cost and PCB area.
The EUA2035 also features short-circuit and thermal
protection preventing the device from being damaged
during a fault condition. The EUA2035 is available in
24-pin SSOP package.
FEATURES
Wide Supply Voltage: 2.7V to 5.5V
Unique Modulation Scheme Reduces EMI Emission
3W/ch into an 4 Load From 5V Supply
Efficient, Class-D Operation Eliminates Heatsinks
64-Step DC Volume Control
Headphone Output Function
Auto Gain Control
Thermal and Short-Circuit Protection
Integrated Click and Pop Suppression
24-pin SSOP Package
RoHS Compliant and 100% Lead(Pb)-Free
Halogen-Free
APPLICATIONS
LCD Monitors/TVs
All-in-One PCs
Portable Audio
Notebook PC
Typical Application Circuit
Figure1.
DS2035
Ver 1.1
Jul. 2012
1
EUTECH [ EUTECH MICROELECTRONICS INC ]
