LF412AMH National Semiconductor, LF412AMH Datasheet - Page 4

• Manufacturer Part Number: LF412AMH
• Description: Low Offset/ Low Drift Dual JFET Input Operational Amplifier
• Manufacturer: National Semiconductor

www.national.com
e
i
Symbol
n
n
(Note 7)
AC Electrical Characteristics
Note 3: Unless otherwise specified the absolute maximum negative input voltage is equal to the negative power supply voltage.
Note 4: Any of the amplifier outputs can be shorted to ground indefintely, however, more than one should not be simultaneously shorted as the maximum junction
temperature will be exceeded.
Note 5: For operating at elevated temperature, these devices must be derated based on a thermal resistance of
Note 6: These devices are available in both the commercial temperature range 0˚C T
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 “H” package only. In all cases the maximum operating temperature is limited by internal junc-
tion temperature T
Note 7: Unless otherwise specified, the specifications apply over the full temperature range and for V
I
Note 8: The LF412A is 100% tested to this specification. The LF412 is sample tested on a per amplifier basis to insure at least 85% of the amplifiers meet this speci-
fication.
Note 9: The input bias currents are junction leakage currents which approximately double for every 10˚C increase in the junction temperature, T
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
if input bias current is to be kept to a minimum.
Note 10: Supply voltage rejection ratio is measured for both supply magnitudes increasing or decreasing simultaneously in accordance with common practice. V
=
Note 11: Refer to RETS412X for LF412MH and LF412MJ military specifications.
Note 12: Max. Power Dissipation is defined by the package characteristics. Operating the part near the Max. Power Dissipation may cause the part to operate out-
side guaranteed limits.
Note 13: Human body model, 1.5 k
Typical Performance Characteristics
Input Bias Current
Positive Common-Mode
Input Voltage Limit
B
, and I
±
6V to
OS
±
15V.
are measured at V
Equivalent Input Noise
Voltage
Equivalent Input Noise
Current
j
max.
Parameter
CM
= 0.
DS005656-10
DS005656-13
in series with 100 pF.
T
f = 1 kHz
T
D
A
A
. T
= 25˚C, R
= 25˚C, f = 1 kHz
j
= T
Input Bias Current
Negative Common-Mode
Input Voltage Limit
A
Conditions
+
jA
(Continued)
P
S
D
= 100 ,
where
jA
is the thermal resistance from junction to ambient. Use of a heat sink is recommended
4
A
Min
70˚C and the military temperature range −55˚C T
DS005656-11
DS005656-14
LF412A
0.01
Typ
25
S
=
±
20V for the LF412A and for V
Max
Supply Current
Positive Current Limit
jA
.
Min
LF412
0.01
Typ
25
S
=
A
±
15V for the LF412. V
125˚C. The temperature
Max
j
. Due to limited pro-
DS005656-12
DS005656-15
Units
OS
S
,