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PDF EUA2045HIR1 Data sheet ( Hoja de datos )
| Número de pieza | EUA2045HIR1 | |
| Descripción | 2.8W Mono Filterless Class-D Audio Power Amplifier | |
| Fabricantes | Eutech Microelectronics | |
| Logotipo |  |
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EUA2045
Non-Clip, Low EMI, 2.8W Mono Filterless Class-D
Audio Power Amplifier with Auto-Recovery
DESCRIPTION
The EUA2045 is a high efficiency, 2.8W mono class-D
audio power amplifier with non-clip. A low noise, filterless
PWM architecture eliminates the output filter, reducing
external component count, system cost, and simplifying
design.
Operating in a single 5V supply, EUA2045 is capable of
driving 4Ω speaker load at a continuous average output of
2.8W/10% THD+N or 2.2W/1% THD+N. The EUA2045
has high efficiency with speaker load compared to a typical
class AB amplifier. With a 3.6V supply driving an 8Ω
speaker , the efficiency for a 400mW power level is 84%.
EUA2045 feature non-clip output control function which
detects output signal clip due to the over level input signal
and suppress the output signal clip automatically. Also the
non-clip output control function can adapt the output clip
cause by power supply voltage down with battery.
In cellular handsets, the earpiece, speaker phone, and
melody ringer can each be driven by the EUA2045.
The EUA2045 is available in space-saving WCSP and
TDFN-8 packages.
FEATURES
Unique Modulation Scheme Reduces EMI Emissions
Unique Non-Clip function , Variable NCN1,
NCN2,NCNOFF mode Select
Short Circuit Auto-Recovery
Efficiency at 3.6V With an 8-Ω Speaker:
− 84% at 400 mW
Low Quiescent Current and
Shutdown Current
2.5V to 5.5V Wide Supply Voltage
Shutdown Pin Compatible with 1.8V Logic GPIO
Optimized PWM Output Stage Eliminates
LC Output Filter
Improved PSRR ( -68 dB) Eliminates Need for a
Voltage Regulator
Fully Differential Design Reduces RF Rectification
and Eliminates Bypass Capacitor
Improved CMRR Eliminates Two Input
Coupling Capacitors
Internally Generated 325-kHz Switching
Frequency
Integrated Pop and Click Suppression Circuitry
1.5mm × 1.5mm Wafer Chip Scale Package (WCSP)
and 3mm × 3mm TDFN-8 Package
RoHS Compliant and 100% Lead(Pb)-Free
Halogen-Free
Typical Application Circuit
APPLICATIONS
Ideal for Wireless or cellular Handsets and PDAs
DS2045 Ver 0.1 Mar. 2012
Figure1.
1
1 page  
EUA2045
Electrical Characteristics TA = 25°C ,Gain= 2V/V,RL=8Ω (Unless otherwise noted)
Symbol
Parameter
Conditions
EUA2045
Min. Typ. Max.
THD+N=10%,
f=1kHz, RL=4Ω
VDD= 5V
VDD= 3.6V
VDD= 2.5V
2.8
1.42
0.68
PO Output power
THD+N=1%,
f=1kHz, RL=4Ω
THD+N=10%,
f=1kHz, RL=8Ω
VDD= 5V
VDD= 3.6V
VDD= 2.5V
VDD= 5V
VDD= 3.6V
VDD= 2.5V
2.26
1.14
0.54
1.67
0.86
0.42
THD+N=1%,
f=1kHz, RL=8Ω
VDD= 5V
VDD= 3.6V
VDD= 2.5V
1.36
0.69
0.33
THD+N
Total harmonic distortion
plus noise
kSVR Supply ripple rejection ratio
SNR Signal-to-noise ratio
Vn Output voltage noise
tSTUP
tWK
Start-up time
Wake-up mode settling
time
VDD= 5V,PO=1W, RL=8Ω, f=1kHz
VDD= 3.6V,PO=0.5W, RL=8Ω, f=1kHz
VDD= 2.5V,PO=200mW, RL=8Ω, f=1kHz
VDD= 3.6V, Inputs f=217 Hz,
ac-grounded with V(RIPPLE)=200mVpp
CI= 2µF
VDD= 5V,PO=1W, RL=8Ω
VDD= 3.6V,
f=20Hz to
No weighting
20kHz,Inputs
ac-grounded with A weighting
CI= 2µF
Cr= 1µF
0.15
0.15
0.15
-60
89
181
140
32
180
tSD Shutdown settling time
180
tMOD Each mode settling time
0.1
NCN
VNCN1
VNCN2
VNCNO
VSD
Non-clip1 mode setting
threshold voltage
Non-clip2 mode setting
threshold voltage
Non-clip off mode setting
threshold voltage
Shut down mode setting
threshold voltage
1.20 VDD
0.80 1.10
0.36 0.68
0 0.14
tAT1 Attack time 1
VDD= 3.6V
45
tRL1 Release time 1
VDD= 3.6V
2.6
tAT2 Attack time 2
VDD= 3.6V
10
tRL2 Release time 2
VDD= 3.6V
1.2
AMAX
-10
Unit
W
W
W
W
%
dB
dB
µVRMS
ms
ms
ms
ms
V
V
V
V
ms
s
ms
s
dB
DS2045 Ver 0.1 Mar. 2012
5
5 Page 
EUA2045
Figure27.
Figure28.
DS2045 Ver 0.1 Mar. 2012
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet EUA2045HIR1.PDF ] | |
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