參數(shù)資料
型號(hào): LM4883
廠商: National Semiconductor Corporation
元件分類: 音頻放大器
英文描述: Dual 2.1W Audio Amplifier Plus Stereo Headphone
中文描述: 雙2.1W音頻功率放大器加立體聲耳機(jī)
文件頁(yè)數(shù): 5/23頁(yè)
文件大?。?/td> 1244K
代理商: LM4883
Electrical Characteristics (3V)
(Notes 3, 7, 13)
The following specifications apply for V
DD
= 3V unless otherwise noted. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4883
Units
(Limits)
Typical
(Note 8)
4.5
2.5
0.01
2.2
1.5
Limit
(Note 9)
I
DD
Quiescent Power Supply Current
V
IN
= 0V, I
O
= 0A (Note 10) , HP-IN = 0V
V
IN
= 0V, I
O
= 0A (Note 10) , HP-IN = 4V
V
DD
applied to the SHUTDOWN pin
mA
mA
μA
V
V
I
SD
V
IH
V
IL
V
IHSD
V
ILSD
T
WU
Shutdown Current
Headphone High Input Voltage
Headphone Low Input Voltage
Shutdown High Input Voltage
Shutdown Low Input Voltage
Turn On Time
0.7V
DD
0.3V
DD
V (min)
V (max)
ms
1μF Bypass Cap (C5)
140
Electrical Characteristics for Bridged-Mode Operation (3V)
(Notes 3, 7, 13)
The following specifications apply for V
DD
= 3V unless otherwise specified. Limits apply for T
A
= 25C.
Symbol
Parameter
Conditions
LM4883
Units
(Limits)
Typical
(Note 8)
5
Limit
(Note 9)
V
OS
Output Offset Voltage
V
IN
= 0V
THD+N = 1%, f = 1kHz (Note 12)
LM4883SQ, R
L
= 3
LM4883SQ, R
L
= 4
LM4883SQ, R
L
= 8
THD+N = 10%, f = 1kHz (Note 12)
LM4883SQ, R
L
= 3
LM4883SQ, R
L
= 4
LM4883SQ, R
L
= 8
1kHz
LM4883SQ, R
L
= 4
, P
O
= 280mW
LM4883SQ, R
L
= 8
, P
O
= 200mW
Input Floating, 217Hz
V
ripple
= 200mV
p-p
C
B
= 1μF, R
L
= 8
Input Floating, 1kHz
V
ripple
= 200mV
p-p
C
B
= 1μF, R
L
= 8
Input grounded, 217Hz
V
ripple
= 200mV
p-p
C
B
= 1μF, R
L
= 8
Input grounded, 1kHz
V
ripple
= 200mV
p-p
C
B
= 1μF, R
L
= 8
f = 1kHz, C
B
= 1.0μF
1kHz, A-weighted
mV
P
O
Output Power (Note 11)
.82
.70
.43
W
W
W
1.0
.85
.53
W
W
W
THD+N
Total Harmonic Distortion+Noise
0.1
0.05
90
%
%
dB
PSRR
Power Supply Rejection Ratio
80
dB
65
dB
73
dB
X
TALK
V
NO
Channel Separation
Output Noise Voltage
85
21
dB
μV
L
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