參數(shù)資料
型號(hào)： L4782TA
廠商： National Semiconductor Corporation
英文描述： 3 Channel 25W Audio Power Amplifier with Mute and Standby
中文描述： 3頻道25瓦音頻功率放大器靜音和待機(jī)
文件頁數(shù)： 3/26頁
文件大?。?/td> 1157K
代理商： L4782TA
Absolute Maximum Ratings
(Notes 1,
2)
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)
Supply Voltage |V
+
| + |V
-
|
(Input Signal)
Common Mode Input Voltage
66V
64V
(V
+
or V
-
) and
|V
+
| + |V
-
|
≤
54V
Differential Input Voltage (Note 13)
Output Current
Power Dissipation (Note 3)
ESD Susceptability (Note 4)
ESD Susceptability (Note 5)
Junction Temperature (T
JMAX
) (Note 9)
54V
Internally Limited
125W
2.0kV
200V
150C
Soldering Information
TA Package (10 seconds)
Storage Temperature
Thermal Resistance
θ
JA
θ
JC
260C
-40C to +150C
30C/W
1.0C/W
Operating Ratings
(Notes 1, 2)
Temperature Range
T
MIN
≤
T
A
≤
T
MAX
Supply Voltage |V
+
| + |V
-
|
20C
≤
T
A
≤
+85C
20V
≤
V
TOTAL
≤
64V
Note:
Operation is guaranteed up to 64V; however, distor-
tion may be introduced from
SPiKe
protection circuitry if
proper thermal considerations are not taken into account.
Refer to the
Thermal Considerations
section for more
information.
Electrical Characteristics
(Notes 1, 2)
The following specifications apply for V
+
= +25V, V
-
= 25V, and R
L
= 8
unless otherwise specified. Limits apply for T
A
=
25C.
Symbol
Parameter
Conditions
LM4782
Units
(Limits)
Typical
(Note 6)
18
Limit
(Notes 7, 8)
20
64
80
|V
+
| + |V
-
|
Power Supply Voltage (Note
10)
Mute Attenuation
GND V
-
≥
9.5V
V (min)
V (max)
dB (min)
V
M
V
MUTE
= 2.5V
THD+N = 0.5% (max)
f = 1kHz; f = 20kHz
|V
+
| = |V
-
| = 19V, R
L
= 4
|V
+
| = |V
-
| = 22V, R
L
= 6
|V
+
| = |V
-
| = 25V, R
L
= 8
P
O
= 15W, f = 20Hz - 20kHz
A
V
= 26dB
|V
+
| = |V
-
| = 19V, R
L
= 4
|V
+
| = |V
-
| = 22V, R
L
= 6
|V
+
| = |V
-
| = 25V, R
L
= 8
P
O
= 10W, f = 1kHz
P
O
= 10W, f = 10kHz
V
IN
= 1.414V
RMS
, t
rise
= 2ns
V
CM
= 0V, V
O
= 0V, I
O
= 0A
V
STANDBY
= GND, Standby = Off
V
STANDBY
= 5V, Standby = On
115
P
O
Output Power (RMS)
20
23
25
15
20
20
W (min)
W (min)
W (min)
THD+N
Total Harmonic Distortion +
Noise
0.4
0.3
0.2
70
60
18
%
%
%
dB
dB
X
talk
Channel Separation (Note 11)
SR
I
DD
Slew Rate
Total Quiescent Power Supply
Current
12
V/μs (min)
75
8
120
10
mA (max)
mA (max)
V
OS
I
B
I
O
Input Offset Voltage
Input Bias Current
Output Current Limit
Output Dropout Voltage (Note
12)
V
CM
= 0V, I
O
= 0mA
V
CM
= 0V, I
O
= 0mA
|V
+
| = |V
-
| = 10V, t
ON
= 10ms, V
O
= 0V
|V
+
- V
O
|, V
+
= 20V, I
O
= +100mA
|V
O
- V
-
|, V
-
= -20V, I
O
= -100mA
V
+
= 25V to 10V, V
-
= -25V
V
CM
= 0V, I
O
= 0mA
V
+
= 25V, V
-
= -25V to -10V
V
CM
= 0V, I
O
= 0mA
2.0
0.2
3.5
1.8
2.5
15
0.5
2.9
2.3
3.2
mV (max)
μA (max)
A (min)
V (max)
V (max)
V
OD
PSRR
Power Supply Rejection Ratio
(Note 15)
115
85
dB (min)
110
85
dB (min)
L
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