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參數(shù)資料
| 型號： | LF451 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | LF451 Wide-Bandwidth JFET-Input Operational Amplifier |
| 中文描述： | LF451寬帶寬JFET輸入運算放大器 |
| 文件頁數(shù)： | 2/8頁 |
| 文件大小： | 207K |
| 代理商： | LF451 |
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Supply Voltage (V
a
b
V
b
)
Input Voltage Range
36V
V
b
s
V
IN
s
V
a
Differential Input Voltage (Note 2)
g
30V
150
§
C
Junction Temperature (T
J
MAX)
Output Short Circuit Duration
Continuous
Power Dissipation (Note 3)
500 mW
ESD Tolerance
TBD
Soldering Information (Note 5)
SO Package: Vapor Phase (60 sec)
Infrared (15 sec)
215
§
C
220
§
C
Operating Ratings
(Note 1)
Temperature Range
T
MIN
s
T
A
s
T
MAX
0
§
C
s
T
A
s
a
70
§
C
LF451CM
Junction Temperature (T
J max
)
Supply Voltage (V
a
b
V
b
)
125
§
C
10V to 32V
DC Electrical Characteristics
The following specifications apply for V
a
e a
15V and V
b
e b
15V.
Bold-
face limits apply for T
MIN
to T
MAX
;
all other limits T
A
e
T
J
e
25
§
C.
LF451CM
Symbol
Parameter
Conditions
Typical
(Note 6)
Tested
Limit
(Note 7)
Design
Limit
(Note 8)
Units
V
OS
Maximum Input Offset Voltage
R
S
e
10 k
X
, (Note 10)
0.3
5
mV
I
OS
Maximum Input Offset Current
(Notes 9, 10)
T
J
e
25
§
C
T
J
e
70
§
C
T
J
e
25
§
C
T
J
e
70
§
C
25
100
pA
nA
2
I
B
Maximum Input Bias Current
(Notes 9, 10)
50
200
pA
nA
4
R
IN
Input Resistance
T
J
e
25
§
C
10
12
X
AVOL
Minimum Large Signal
Voltage Gain
V
O
e
g
10V, R
L
e
2 k
X
(Note 10)
200
50
25
V/mV
V
O
Minimum Output Voltage Swing
R
L
e
10k
g
13.5
g
12
g
12
V
V
CM
Minimum Input Common Mode
Voltage Range
a
14.5
b
11.5
a
11
b
11
a
11
b
11
V
V
CMRR
Minimum Common-Mode
Rejection Ratio
R
S
s
10 k
X
100
80
80
dB
PSRR
Minimum Supply Voltage
Rejection Ratio
(Note 11)
100
80
80
dB
I
S
Maximum Supply Current
3.4
3.4
mA
AC Electrical Characteristics
The following specifications apply for V
a
e a
15V and V
b
e b
15V.
Bold-
face limits apply for T
MIN
to T
MAX
;
all other limits T
A
e
T
J
e
25
§
C.
LF451CM
Symbol
Parameter
Conditions
Typical
(Note 6)
Tested
Limit
(Note 7)
Design
Limit
(Note 8)
Units
SR
Slew Rate
A
V
e a
1
13
8
V/
m
s
GBW
Minimum Gain-Bandwidth Product
f
e
100 kHz
4
2.7
MHz
nV/
Hz
pA/
0
Hz
e
n
Equivalent Input Noise Voltage
R
S
e
100
X
, f
e
1 kHz
25
i
n
Equivalent Input Noise Current
R
S
e
100
X
, f
e
1 kHz
0.01
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its specified operating ratings.
Note 2:
When the input voltage exceeds the power supplies, the current should be limited to 1 mA.
Note 3:
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
J
MAX,
i
JA
and the ambient temperature, T
A
. The maximum
allowable power dissipation at any temperature is P
D
e
(T
J
MAX
b
T
A
)/
i
JA
or the number given in the Absolute Maximum Ratings, whichever is lower. For
guaranteed operation T
J max
e
125
§
C. The typical thermal resistance (
i
JA
) of the LF451CM when board-mounted is 170
§
C/W.
Note 5:
See AN-450 ‘‘Surface Mounting Methods and Their Effect on Product Reliability’’ (Appendix D) for other methods of soldering surface mount devices.
Note 6:
Typicals are at T
J
e
25
§
C and represent most likely parametric norm.
2
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