參數(shù)資料
型號(hào)： LM302
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： 緩沖放大器
英文描述： LM102/LM302 Voltage Followers
中文描述： BUFFER AMPLIFIER
文件頁(yè)數(shù)： 2/6頁(yè)
文件大小： 192K
代理商： LM302
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
(Note 6)
Supply Voltage
g
18V
500 mW
Power Dissipation (Note 1)
Input Voltage (Note 2)
g
15V
Output Short Circuit Duration (Note 3)
Indefinite
Operating Free Air Temperature Range
LM102
LM302
b
55
§
C to
a
125
§
C
0
§
C to
a
70
§
C
b
65
§
C to
a
150
§
C
Storage Temperature Range
Lead Temperature (Soldering, 10 sec.)
300
§
C
ESD rating to be determined.
Electrical Characteristics
(Note 4)
Parameter
Conditions
LM102
LM302
Units
Min
Typ
Max
Min
Type
Max
Input Offset Voltage
T
A
e
25
§
C
T
A
e
25
§
C
T
A
e
25
§
C
2
5
5
15
mV
Input Bias Current
3
10
10
30
nA
Input Resistance
10
10
10
12
10
9
10
12
X
Input Capacitance
3.0
3.0
pF
Large Signal Voltage
Gain
T
A
e
25
§
C, V
S
g
15V,
V
OUT
e
g
10V, R
L
e
8 k
X
T
A
e
25
§
C
T
A
e
25
§
C
0.999
0.9996
0.9985
0.9995
1.0
V/V
Output Resistance
0.8
2.5
0.8
2.5
X
Supply Current
3.5
5.5
3.5
5.5
mA
Input Offset Voltage
7.5
20
mV
Offset Voltage
Temperature Drift
6
20
m
V/
§
C
Input Bias Current
T
A
e
T
A
MAX
T
A
e
T
A
MIN
3
10
100
3.0
20
15
50
nA
nA
30
Large Signal Voltage
Gain
V
S
e
g
15V, V
OUT
e
g
10V,
R
L
e
10 k
X
0.999
Output Voltage
Swing
V
S
e
g
15V, R
L
e
10 k
X
(Note 5)
g
10
g
10
V
Supply Current
T
A
e
125
§
C
2.6
4.0
mA
Supply Voltage
Rejection Ratio
g
12V
s
V
S
sg
15V
60
60
dB
Note 1:
The maximum junction temperature of the LM102 is 150
§
C, while that of the LM302 is 85
§
C. For operating at elevated temperatures, devices in the H08
package must be derated based on a thermal resistance of 150
§
C/W, junction to ambient, or 20
§
C/W, junction to case.
Note 2:
For supply voltages less than
g
15V, the absolute maximum input voltage is equal to the supply voltage.
Note 3:
It is necessary to insert a resistor (at least 5k and preferably 10k) in series with the input pin when the amplifier is driven from low impedance sources to
prevent damage when the output is shorted and to ensure stability.
Note 4:
These specifications apply for
g
12V
s
V
S
s g
15V and
b
55
§
C
s
T
A
s
125
§
C for the LM102 and 0
§
C
s
T
A
s
70
§
C for the LM302 unless otherwise
specified.
Note 5:
Increased output swing under load can be obtained by connecting an external resistor between the booster and V
b
terminals. See curve.
Note 6:
Refer to RETS102X for the LM102H military specifications.
APPLICATION HINT
The input must be driven from a source impedance of typically 10 k
X
(5 k
X
Min) to maintain stability. The total source
impedance will be reduced at high frequencies if there is stray capacitance at the input pin. In these cases, a 10 k
X
resistor
should be inserted in series with the input, physically close to the input pin to minimize the stray capacitance and prevent
oscillation.
2
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