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 1)
Output Short Circuit
Duration (Note 2)
Power Dissipation
(Notes 3, 9)
T
j
max
θ
jA
(Typical)
LF444A
±
22V
±
38V
±
19V
Continuous
D Package
900 mW
150˚C
100˚C/W
LF444
±
18V
±
30V
±
15V
Continuous
Operating Temperature Range
Storage Temperature Range
ESD Tolerance (Note 10)
LF444A/LF444
(Note 4)
−65˚C
≤
T
A
≤
150˚C
Rating to
be determined
N, M Packages
670 mW
115˚C
85˚C/W
(Note 5)
Soldering Information
Dual-In-Line Packages
(Soldering, 10 sec.)
260˚C
Small Outline Package
Vapor Phase (60 sec.)
215˚C
Infrared (15 sec.)
220˚C
See AN-450 “Surface Mounting Methods and Their Effect on
Product Reliability” for other methods of soldering surface
mount devices.
DC Electrical Characteristics
Symbol
V
OS
Parameter
Input Offset Voltage
Conditions
Min
R
S
= 10k, T
A
= 25˚C
0˚C
≤
T
A
≤
+70˚C
−55˚C
≤
T
A
≤
+125˚C
R
S
= 10 kΩ
V
S
=
±
15V
(Notes 5, 6)
T
j
= 25˚C
T
j
= 70˚C
T
j
= 125˚C
T
j
= 25˚C
T
j
= 70˚C
T
j
= 125˚C
50
25
LF444A
Typ
2
Max
5
6.5
8
10
5
25
1.5
10
10
50
3
20
10
12
LF444
Min
Typ
3
Max
10
12
10
5
50
1.5
10
100
3
10
25
15
12
Units
mV
mV
mV
µV/˚C
pA
nA
nA
pA
nA
nA
Ω
V/mV
V/mV
∆V
OS
/∆T
I
OS
Average TC of Input
Offset Voltage
Input Offset Current
I
B
Input Bias Current
V
S
=
±
15V
(Notes 5, 6)
R
IN
A
VOL
Input Resistance
Large Signal Voltage
Gain
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
100
100
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
±
12
±
16
80
80
±
13
+18
−17
100
100
0.6
0.8
±
12
±
11
70
70
±
13
+14
−12
95
90
0.6
1.0
V
V
V
dB
dB
mA
R
S
≤
10 kΩ
(Note 7)
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2
AC Electrical Characteristics
Symbol
Parameter
Amplifier-to-Amplifier
Coupling
SR
GBW
e
n
Slew Rate
Gain-Bandwidth Product
Equivalent Input Noise Voltage
(Note 5)
Conditions
Min
LF444A
Typ
−120
Max
Min
LF444
Typ
−120
1
1
35
Max
dB
V/µs
MHz
Units
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
1
1
35
i
n
Equivalent Input Noise Current
0.01
0.01
Note 1:
Unless otherwise specified the absolute maximum negative input voltage is equal to the negative power supply voltage.
Note 2:
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 3:
For operating at elevated temperature, these devices must be derated based on a thermal resistance of
θ
jA
.
Note 4:
The LF444A is 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 LF444 is
available in the commercial temperature range only. The temperature 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” indicates the military temperature range. The military temperature range is available in “D” package only.
Note 5:
Unless otherwise specified the specifications apply over the full temperature range and for V
S
=
±
20V for the LF444A and for V
S
=
±
15V for the LF444. V
OS
,
I
B
, and I
OS
are measured at V
CM
= 0.
Note 6:
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 7:
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 LF444 and from
±
20V to
±
5V for the LF444A.
Note 8:
Refer to RETS444X for LF444MD military specifications.
Note 9:
Max. Power Dissipation is defined by the package characteristics. Operating the part near the Max. Power Dissipation may cause the part to operate outside
guaranteed limits.
Note 10:
Human body model, 1.5 kΩ in series with 100 pF.
Note 11:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions for which the device is func-
tional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-
antee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where no limit is
given, however, the typical value is a good indication of device performance.
