If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
Differential Input Voltage
Input Voltage Range
(Note 2)
Output Short Circuit
Duration (Note 3)
T
j
max
LF442A
±
22V
±
38V
±
19V
Continuous
H Package
150˚C
LF442
±
18V
±
30V
±
15V
Continuous
N Package
115˚C
θ
JA
(Typical)
(Note 4)
(Note 5)
θ
JC
(Typical)
Operating Temperature
Range
Storage
Temperature Range
Lead Temperature
(Soldering, 10 sec.)
ESD Tolerance
H Package
65˚C/W
165˚C/W
21˚C/W
(Note 5)
N Package
114˚C/W
152˚C/W
(Note 5)
−65˚C≤T
A
≤150˚C
−65˚C≤T
A
≤150˚C
260˚C
260˚C
Rating to be determined
DC Electrical Characteristics
Symbol
V
OS
∆V
OS
/∆T
I
OS
Parameter
Input Offset Voltage
Average TC of Input
Offset Voltage
Input Offset Current
V
S
=
±
15V
(Notes 7, 8)
I
B
Input Bias Current
V
S
=
±
15V
(Notes 7, 8)
R
IN
A
VOL
Input Resistance
Large Signal Voltage
Gain
V
O
V
CM
CMRR
PSRR
I
S
Output Voltage Swing
Input Common-Mode
Voltage Range
Common-Mode
Rejection Ratio
Supply Voltage
Rejection Ratio
Supply Current
(Note 9)
R
S
≤
10 kΩ
(Note 7)
LF442A
Min
Typ
0.5
7
T
j
= 25˚C
T
j
= 70˚C
T
j
= 125˚C
T
j
= 25˚C
T
j
= 70˚C
T
j
= 125˚C
5
Max
1.0
10
25
1.5
10
10
50
3
20
10
50
25
12
Conditions
R
S
= 10 kΩ, T
A
= 25˚C
Over Temperature
R
S
= 10 kΩ
LF442
Min
Typ
1.0
7
5
50
1.5
10
100
3
10
25
15
12
Units
Max
5.0
7.5
mV
mV
µV/˚C
pA
nA
nA
pA
nA
nA
Ω
V/mV
V/mV
V
V
V
dB
dB
500
µA
T
j
= 25˚C
V
S
=
±
15V, V
O
=
±
10V,
R
L
= 10 kΩ, T
A
= 25˚C
Over Temperature
V
S
=
±
15V, R
L
= 10 kΩ
200
200
200
200
±
12
±
16
80
80
±
13
+18
−17
100
100
300
400
±
12
±
11
70
70
±
13
+14
−12
95
90
400
AC Electrical Characteristics
Symbol
Parameter
Amplifier to Amplifier
Coupling
SR
GBW
e
n
i
n
Slew Rate
Gain-Bandwidth Product
Equivalent Input Noise
Voltage
Equivalent Input Noise
Current
www.national.com
(Note 7)
LF442A
Min
Typ
−120
0.8
0.8
1
1
35
0.01
0.6
0.6
Max
Min
LF442
Typ
−120
1
1
35
0.01
Max
dB
V/µs
MHz
Units
Conditions
T
A
= 25˚C, f = 1 Hz-20 kHz
(Input Referred)
V
S
=
±
15V, T
A
= 25˚C
V
S
=
±
15V, T
A
= 25˚C
T
A
= 25˚C, R
S
= 100Ω,
f = 1 kHz
T
A
= 25˚C, f = 1 kHz
2
AC Electrical Characteristics
(Note 7) (Continued)
Note 1:
“Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits.
Note 2:
Unless otherwise specified the absolute maximum negative input voltage is equal to the negative power supply voltage.
Note 3:
Any of the amplifier outputs can be shorted to ground indefinitely, however, more than one should not be simultaneously shorted as the maximum junction
temperature will be exceeded.
Note 4:
The value given is in 400 linear feet/min air flow.
Note 5:
The value given is in static air.
Note 6:
These devices are available in both the commercial temperature range 0˚C
≤
T
A
≤
70˚C and the military temperature range −55˚C
≤
T
A
≤
125˚C. The tem-
perature range is designated by the position just before the package type in the device number. A “C” indicates the commercial temperature range and an “M” indi-
cates the military temperature range. The military temperature range is available in “H” package only.
Note 7:
Unless otherwise specified, the specifications apply over the full temperature range and for V
S
=
±
20V for the LF442A and for V
S
=
±
15V for the LF442.
V
OS
, I
B
, and I
OS
are measured at V
CM
= 0.
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 pro-
duction test time, the input bias currents measured are correlated to junction temperature. In normal operation the junction temperature rises above the ambient tem-
perature as a result of internal power dissipation, P
D
. T
j
= T
A
+
θ
jA
P
D
where
θ
jA
is the thermal resistance from junction to ambient. Use of a heat sink is recommended
if input bias current is to be kept to a minimum.
Note 9:
Supply voltage rejection ratio is measured for both supply magnitudes increasing or decreasing simultaneously in accordance with common practice from
±
15V to
±
5V for the LF442 and
±
20V to
±
5V for the LF442A.
Note 10:
Refer to RETS442X for LF442MH military specifications.
