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Eutech Microelectronics

EUA2035 Datasheet Preview

EUA2035 Datasheet

3W/CH Stereo Filterless Class-D Audio Amplifier

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Preliminary 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 4load 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 4Load 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
DS2035 Ver 0.1 Jan. 2011
Figure1.
1




Eutech Microelectronics

EUA2035 Datasheet Preview

EUA2035 Datasheet

3W/CH Stereo Filterless Class-D Audio Amplifier

No Preview Available !

Pin Configurations
Package Type
SSOP-24
Preliminary
Pin Configurations
EUA2035
Pin Description
PIN
+OUT_L
SSOP-24
1
PGNDL
2,3
-OUT_L
4
PVDDL
5
MUTE
6
VDD
7
INL 8
EarInL
9
VDC
10
VOLUME
11
EarOutL
12
EarOutR
13
VREF
14
LINE/EAR
15
EarInR
16
INR 17
GND
18
SHDN
PVDDR
19
20
-OUT_R
21
PGNDR
22,23
+OUT_R
24
DESCRIPTION
Left Channel Positive Output
Left Channel Power GND
Left Channel Negative Output
Left Channel Power GND
Mute Control Input
Analog VDD
Left Channel Input
Left Earphone Input
Analog reference for gain control section
DC volume control to set the gain of Class-D
Left Earphone Output
Right Earphone Output
Internal analog reference, connect a bypass capacitor from VREF to GND
Line/Earphone detect
Right Earphone Input
Right Channel Input
Analog GND
Shutdown Control Input
Right Channel Power Supply
Right Channel Negative Output
Right Channel Power GND
Right Channel Positive Output
DS2035 Ver 0.1 Jan. 2011
2
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com


Part Number EUA2035
Description 3W/CH Stereo Filterless Class-D Audio Amplifier
Maker Eutech Microelectronics
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EUA2035 Datasheet PDF






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