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PDF EUA2035FIR1 Data sheet ( Hoja de datos )
| Número de pieza | EUA2035FIR1 | |
| Descripción | 3W/CH Stereo Filterless Class-D Audio Amplifier | |
| Fabricantes | Eutech Microelectronics | |
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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 4Ω 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 4Ω 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
DS2035 Ver 0.1 Jan. 2011
Figure1.
1
1 page  
Preliminary
Electrical Characteristics (continued)
VDD=5V, Gain=Maximum, RL=8Ω, TA = +25°C (Unless otherwise noted)
Symbol
Parameter
Conditions
THD+N
PSRR
Total Harmonic Distortion
Plus Noise
Power Supply Ripple
Rejection
RL=32Ω,PO=10mW, f=1kHz
Input AC-GND, f=1kHz, Vpp=200mV
CS Channel Separation
PO=1W, f=1kHz
Vn Noise
Input AC-GND
A-weighting
No A-weighting
SNR Signal Noise Ratio
f=20-20kHz, THD=1%
Control Section
UVLO Under Voltage Lock-out
IMUTE Mute Current
VMUTE=0V
ISHDN Shutdown Current
VSHDN=0V
VSH SHDN Input High
VSL SHDN Input Low
VMH MUTE Input High
VML
OTP
OTH
MUTE Input Low
Over Temperature
Protection
Over Temperature
Hysteresis
EUA2035
EUA2035
Min. Typ. Max. Unit
0.05 %
40 dB
-85 dB
15
µV
26
90 dB
2V
5 8 mA
0.2 1 µA
1.2
V
0.5
1.2
V
0.5
165 °C
45 °C
DS2035 Ver 0.1 Jan. 2011
5
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
5 Page 
Typical Characteristics (continued)
Preliminary
EUA2035
Figure27.
Figure28.
Figure29.
Figure30.
DS2035 Ver 0.1 Jan. 2011
11
Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet EUA2035FIR1.PDF ] | |
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