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參數(shù)資料
| 型號： | LM3875T/NOPB |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 56 W, 1 CHANNEL, AUDIO AMPLIFIER, PZFM11 |
| 封裝： | LEAD FREE, PLASTIC, TO-220, 11 PIN |
| 文件頁數(shù)： | 14/20頁 |
| 文件大小： | 1006K |
| 代理商： | LM3875T/NOPB |
Absolute Maximum Ratings (Notes 1,
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage |V
+|+|V| (No Signal)
94V
Supply Voltage |V
+|+|V| (Input
Signal)
84V
Common Mode Input Voltage
(V
+ or V) and
|V
+|+|V|
≤ 80V
Differential Input Voltage
60V
Output Current
Internally Limited
Power Dissipation (Note 3)
125W
ESD Susceptibility (Note 4)
2500V
Junction Temperature (Note 5)
150C
Soldering Information
T package (10 seconds)
260C
Storage Temperature
40C to +150C
Thermal Resistance
θ
JC
1C/W
θ
JA
43C/W
Operating Ratings (Notes 1, 2)
Temperature Range
T
MIN
≤ T
A
≤ T
MAX
20C
≤ T
A
≤
+85C
Supply Voltage |V
+|+|V|
20V to 84V
Note: Operation is guaranteed up to 84V, however, distortion may be intro-
duced from the SPiKe Protection Circuitry when operating above 70V if
proper thermal considerations are not taken into account. Refer to the
Thermal Considerations section for more information. (See SPiKe Protection
Response)
Electrical Characteristics (Notes 1, 2)
The following specifications apply for V
+ = +35V, V = 35V with R
L =8
unless otherwise specified. Limits apply for T
A =
25C.
Symbol
Parameter
Conditions
LM3875
Units
(Limits)
Typical
Limit
|V
+|+|V|
Power Supply Voltage
20
84
V (Min)
V (Max)
**P
O
Output Power (Continuous Average)
THD+N= 0.1% (Max)
f=1kHz,f=20kHz
56
40
W (Min)
Peak P
O
Instantaneous Peak Output Power
100
W
THD + N
Total Harmonic Distortion Plus Noise
40W, 20 Hz
≤ f ≤ 20 kHz
A
V =26dB
0.06
%
**SR
Slew Rate (Note 9)
V
IN = 1.414 Vrms,f=10kHz
Square-wave, R
L =2k
11
5
V/s
(Min)
*I+
Total Quiescent Power Supply
Current
V
CM = 0V, VO = 0V, Io =0mA
30
70
mA (Max)
*V
OS
Input Offset Voltage
V
CM = 0V, Io = 0 mA
1
10
mV (Max)
I
B
Input Bias Current
V
CM = 0V, Io = 0 mA
0.2
1
A (Max)
I
OS
Input Offset Current
V
CM = 0V, Io = 0 mA
0.01
0.2
A (Max)
I
o
Output Current Limit
|V
+|=|V| = 10V, t
on = 10 ms, VO = 0V
6
4
A(Min)
*V
od
Output Dropout Voltage
|V
+V
o
|, V+ = 20V, I
o = +100 mA
|V
oV
|, V = 20V, I
o = 100 mA
1.6
2.7
5
V (Max)
*PSRR
Power Supply Rejection Ratio
V
+ = 40V to 20V, V = 40V,
V
cm = 0V, Io =0mA
V
+ = 40V, V = 40V to 20V,
V
cm = 0V, Io =0mA
120
85
dB (Min)
*CMRR
Common Mode Rejection Ratio
V
+ = 60V to 20V, V = 20V to 60V,
V
cm = 20V to 20V, Io =0mA
120
80
dB (Min)
*A
VOL
Open Loop Voltage Gain
|V
+|=|V| = 40V, R
L =2k
, V
O = 60V
120
90
dB (Min)
GBWP
Gain-Bandwidth Product
|V
+|=|V| = 40V
f
O = 100 kHz, VIN = 50 mVrms
82
MHz
(Min)
**e
IN
Input Noise
IHF A Weighting Filter
R
IN = 600
(Input Referred)
2.0
8.0
V (Max)
LM3875
www.national.com
3
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