參數(shù)資料
型號(hào)： LF453
廠商： National Semiconductor Corporation
英文描述： LF453 Wide-Bandwidth Dual JFET-Input Operational Amplifiers
中文描述： LF453寬帶寬雙JFET輸入運(yùn)算放大器
文件頁(yè)數(shù)： 2/8頁(yè)
文件大?。?/td> 219K
代理商： LF453
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
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.
TBD
Soldering Information (Note 4)
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
a
70
§
C
LF453CM
Junction Temperature (T
J max
)
Supply Voltage (V
a
b
V
b
)
125
§
C
10V to 32V
LF453CM
Symbol
Parameter
Conditions
Typical
(Note 5)
Tested
Limit
(Note 6)
Design
Limit
(Note 7)
Units
V
OS
I
OS
Maximum Input Offset Voltage
R
S
e
10 k
X
, (Note 9)
(Notes 8, 9) T
J
e
25
§
C
5
mV
Maximum Input Offset Current
25
100
pA
nA
T
J
e
70
§
C
2
I
B
Maximum Input Bias Current
(Notes 8, 9) T
J
e
25
§
C
50
200
pA
nA
T
J
e
70
§
C
4
R
IN
AVOL
Input Resistance
T
J
e
25
§
C
V
O
e
g
10V, R
L
e
2 k
X
(Note 9)
R
L
e
10k
10
12
X
Minimum Large Signal
Voltage Gain
200
50
25
V/mV
V
O
V
CM
Minimum Output Voltage Swing
g
13.5
a
14.5
b
11.5
g
12
a
11
b
11
g
12
a
11
b
11
V
Minimum Input Common
Mode Voltage Range
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 10)
100
80
80
dB
I
S
AC Electrical Characteristics
The following specifications apply for V
a
e a
15V and V
b
e b
15V. Limits
apply for T
A
e
T
J
e
25
§
C.
Maximum Supply Current
6.5
6.5
mA
LF453CM
Symbol
Parameter
Conditions
Typical
(Note 5)
Tested
Limit
(Note 6)
Design
Limit
(Note 7)
Units
SR
Slew Rate
A
V
e a
1
f
e
100 kHz
R
S
e
100
X
, f
e
1 kHz
R
S
e
100
X
, f
e
1 kHz
13
8
V/
m
s
GBW
Minimum Gain-Bandwidth Product
4
2.7
MHz
nV/
S
Hz
pA/
S
Hz
e
n
i
n
Equivalent Input Noise Voltage
25
Equivalent Input Noise Current
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,
H
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
)/
H
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 (
H
JA
) of the LF453CM when board-mounted is 160
§
C/W.
Note 4:
See AN-450 ‘‘Surface Mounting Methods and Their Effect on Product Reliability’’ (section titled ‘‘Surface Mount’’) for other methods of soldering surface
mount devices.
Note 5:
Typicals are at T
J
e
25
§
C and represent most likely parametric norm.
Note 6:
Tested limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 7:
Design limits are guaranteed to National’s AOQL, but not 100% tested.
Note 8:
The input bias currents are junction leakage currents which approximately double for every 10
§
C increase in the junction temperature T
J
. Due to limited
production test time, the input bias currents are correlated to junction temperature. In normal operation the junction temperature rises above the ambient
temperature as a result of internal power dissipation, P
D
. T
J
e
T
A
a
H
JA
P
D
where
H
JA
is the thermal resistance from junction to ambient.
Note 9:
V
OS
, I
B
, AVOL and I
OS
are measured at V
CM
e
0V.
Note 10:
Supply voltage rejection ratio is measured for both supply magnitudes increasing or decreasing simultaneously in accordance with common practice.
2
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