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參數(shù)資料
| 型號： | LM4856 |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | Integrated Audio Amplifier System |
| 中文描述： | 集成音頻放大器系統(tǒng) |
| 文件頁數(shù)： | 5/23頁 |
| 文件大小： | 1321K |
| 代理商： | LM4856 |
Electrical Characteristics
(Notes 2, 8)
The following specifications apply for V
DD
= 3.0V, T
A
= 25C unless otherwise specified.
Symbol
Parameter
Conditions
LM4856
Units
(Limits)
Typical
(Note 5)
Limits
(Notes 6,
11)
I
DD
Supply Current
Output modes 1, 2, 3, 4, 5, 6, 7
V
IN
= 0V; No loads
Output modes 1, 2, 3, 4, 5, 6, 7
V
IN
= 0V; Loaded (
Figure 1
)
Output mode 0
V
IN
= 0V
SPKR
OUT
; R
L
= 4
THD+N = 1%; f = 1kHz, LM4856LQ
SPKR
OUT
; R
L
= 8
THD+N = 1%; f = 1kHz
R
OUT
and L
OUT
; R
L
= 32
THD+N = 0.5%; f = 1kHz
SPKR
OUT
f = 20Hz to 20kHz
P
OUT
= 150mW; R
L
= 8
R
OUT
and L
OUT
f = 20Hz to 20kHz
P
OUT
= 10mW; R
L
= 32
A-weighted (Note 10)
V
RIPPLE
= 200mV
PP
; f = 217Hz,
C
B
= 1.0μF
All audio inputs terminated into 50
;
Output referred Gain (BTL) = 12dB
Output Mode 1, 3, 5, 7
V
RIPPLE
= 200mV
PP
; f = 217Hz,
C
B
= 1.0μF
All audio inputs terminated into 50
;
Output referred Maximum gain setting
Output Mode 2, 3
Output Mode 4, 5
Output Mode 6, 7
6.5
10
mA (max)
7
11
mA (max)
I
SD
V
OS
Shutdown Current
Output Offset Voltage
0.1
5.0
430
2.0
40
μA (max)
mV (max)
mW
P
O
Output Power
340
300
mW (min)
22
18
mW (min)
THD+N
Total Harmonic Distortion Plus
Noise
0.5
%
0.5
%
N
OUT
Output Noise
29
58
μV
PSRR
Power Supply Rejection Ratio
SPKR
OUT
55
dB (min)
Power Supply Rejection Ratio
R
OUT
and L
OUT
68
60
56
60
55
52
dB (min)
dB (min)
dB (min)
V (min)
V (max)
V (max)
V (min)
V
IH
Logic High Input Voltage
0.7 x V
DD
V
DD
0.4
GND
V
IL
Logic Low Input Voltage
L
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