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APA4838 Datasheet(PDF) 5 Page - Anpec Electronics Coropration

Part # APA4838
Description  Stereo 2.8W Audio Power Amplifier with DC Volume Control and Selectable Gain
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Manufacturer  ANPEC [Anpec Electronics Coropration]
Direct Link  http://www.anpec.com.tw
Logo ANPEC - Anpec Electronics Coropration

APA4838 Datasheet(HTML) 5 Page - Anpec Electronics Coropration

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Copyright
 ANPEC Electronics Corp.
Rev. A.1 - Apr., 2003
APA4838
www.anpec.com.tw
5
APA4838
Symbol
Parameter
Test Conditions
Typ.
Unit
V
OS
Output Offset Voltage
V
IN=0V
5
mV
THD=1%,
f=1kHz, R
L=32Ω
95
P
O
Output Power
THD=10%,
f=1kHz, R
L=32Ω
110
mW
A
V= 1 , VOUT=1VRMS, RL=10kΩ, f=1kHz
0.05
%
THD+N
Total Harmonic Distortion
plus Noise
P
O =75mW, RL=32Ω, AV= 1, f=1kHz
0.07
%
PSRR
Power Supply Rejection
Ratio
V
RIPPLE=100mVRMS , f=120Hz, CB=2.2µF
52
dB
X
TALK
Channel Separation
C
B=2.2µF, RL=8Ω , f=1kHz
90
dB
SNR
Signal-to-Noise Ratio
P
O =75mW, RL=32Ω, A-Wtd Filter
102
dB
V
N
Output Noise Voltage
R
L=32Ω, A-Wtd Filter
20
µV
Electrical Characteristics (Cont.)
Electrical Characteristics for SE Mode Operation (Cont.)
The following specifications apply for V
DD= 5V unless otherwise noted. Limits apply for
T
A= 25°C
Pin Description
Pin
Name
No
I/O
Description
GND
1, 8, 14,
20, 23
Ground connection for circuitry.
Shutdown
2
I Shutdown mode control signal input, place entire IC in shutdown mode when
held high, Idd=0.7uA
Gain Select
3
I Gain select input pin, logic high will switch the amplifier to external gain
mode, and logic low will switch to internal unity gain.
Mode
4
I Mode select input pin, fixed gain when logic L and gain adjustable mode
when logic H.
Mute
5
I Mute control input pin, active H.
V
DD
6, 16, 27
Supply voltage input pin
DC_Vol
7
I Volume control function input pin.
Right Dock
9
O Right docking output pin
Right In
10
I Right channel audio input pin
Beep In
11
I Beep signal input pin
Left In
12
I Left channel audio input pin
Left Dock
13
O Right docking output pin
Left Out +
15
O Left channel positive output pin
Left Out -
17
O Left channel negative output pin
Left Gain 2
18
Connect pin 2 of the external gain setting resistor for left channel
Left Gain 1
19
Connect pin 1 of the external gain setting resistor for left channel
HP Sense
21
I Headphone sense control pin


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