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Teilenummer | EMA2204-50QE20GRR |
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Beschreibung | 2.7W/Ch Stereo Fully Differential Audio Power Amplifier | |
Hersteller | Elite Semiconductor | |
Logo | ||
Gesamt 14 Seiten ESMT/EMP
EMA2204
2.7W/Ch Stereo Fully Differential Audio Power
Amplifier with Bypass Capacitor Free
General Description
The EMA2204 is a 2.7W/Ch Stereo fully differential
amplifier designed to drive a speaker with at least 4Ω
impedance. The device operates from 2.2 V to 5.5 V,
drawing 9mA(Typ.) of quiescent supply current. The
EMA2204 performs superior THD+N and PSRR with no
bypass capacitor required.
With no bypass capacitor, the EMA2204 is ideal for PMPs
applications due to features such as -65dB supply
voltage rejection from 20 Hz to 10kHz, improved RF
rectification immunity and a fast startup with minimal
pop.
Features
.2.7 W/Ch Into 4Ω From a 5-V Supply at THD = 10% (Typ)
.Low Supply Current: 9mA (Typ) at 5 V
.Shutdown Current: 0.1 μA (Typ)
.Fast Startup With Minimal Pop
.Improved PSRR (-65 dB) and Wide Supply Voltage (2.2
V to 5.5 V) for Direct Battery Operation
.Fully Differential Design Reduces RF Rectification
.-63 dB CMRR Eliminates Two Input Coupling Capacitors
.Available in 3 mm X 3 mm TDFN Package
Applications
. PMPs
. Desktop
. Notebook
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Jun. 2009
Revision : 2.0
1/14
ESMT/EMP
EMA2204
Electrical Characteristics VDD = 2.5V
The following specifications apply for VDD=2.5V,AV=2 and RL =8Ω unless otherwise specified. Limits apply for TA = 25°C.
Symbol
Parameter
Conditions
Conditions
Typical
Limit
Units
IDD Quiescent Power Supply Current
VIN = 0V, Io = 0A
8 16 mA
ISD
PO
PSRR
Shutdown Current
Output Power
Power Supply Rejection Ratio
VSDNB=GND
THD+N = 10 %(max), f = 1kHz
RL = 4Ω
RL = 8Ω
0.1
0.62
0.4
THD+N = 1%(max), f = 1kHz
RL = 4Ω
RL = 8Ω
V ripple=200mV sine p-p,
input ac-grounded
f=217Hz
f=20 to 20kHz
0.5
0.3
-65
-60
1
µA
W
dB
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Jun. 2009
Revision : 2.0
6/14
6 Page ESMT/EMP
TQFN-20
EMA2204
SYMBOL
A
A3
b
D
E
e
L
D2
E2
COMMON
DIMENSIONS MILLIMETER
DIMENSIONS INCH
MIN.
NOM.
MAX.
MIN.
NOM.
MAX.
0.70
0.75
0.80 0.027 0.029 0.031
0.203 REF
0.008 REF
0.20
0.25
0.30 0.007 0.009 0.011
3.95
4.00
4.10 0.113 0.156 0.159
3.95
4.00
4.10 0.113 0.156 0.159
0.50 BSC
0.021 BSC
0.50
0.55
0.60 0.019 0.021 0.023
2.15
2.25
2.35 0.083 0.087 0.091
2.15
2.25
2.35 0.083 0.087 0.091
Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.
Publication Date : Jun. 2009
Revision : 2.0
12/14
12 Page | ||
Seiten | Gesamt 14 Seiten | |
PDF Download | [ EMA2204-50QE20GRR Schematic.PDF ] |
Teilenummer | Beschreibung | Hersteller |
EMA2204-50QE20GRR | 2.7W/Ch Stereo Fully Differential Audio Power Amplifier | Elite Semiconductor |
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