Datasheet
LF444
SNOSC04D –MAY 1998–REVISED MARCH 2013
www.ti.com
Absolute Maximum Ratings
(1)(2)(3)
LF444A LF444
Supply Voltage ±22V ±18V
Differential Input Voltage ±38V ±30V
Input Voltage Range
(4)
±19V ±15V
Output Short CircuitDuration
(5)
Continuous Continuous
NAK Package D, NFF
Packages
Power Dissipation
(6)(7)
900 mW 670 mW
T
j
max 150°C 115°C
θ
jA
(Typical) 100°C/W 85°C/W
LF444A/LF444
Operating Temperature Range See
(8)
ESD Tolerance
(9)
Rating to be determined
Storage Temperature Range −65°C ≤ T
A
≤ 150°C
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
(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 ensure specific performance limits. Electrical Characteristics state DC and AC electrical
specifications under particular test conditions which ensure specific performance limits. This assumes that the device is within the
Operating Ratings. Specifications are not ensured for parameters where no limit is given, however, the typical value is a good indication
of device performance.
(2) If Military/Aerospace specified devices are required, please contact the TI Sales Office/ Distributors for availability and specifications.
(3) Refer to RETS444X for LF444MD military specifications.
(4) Unless otherwise specified the absolute maximum negative input voltage is equal to the negative power supply voltage.
(5) 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.
(6) For operating at elevated temperature, these devices must be derated based on a thermal resistance of θ
jA
.
(7) Max. Power Dissipation is defined by the package characteristics. Operating the part near the Max. Power Dissipation may cause the
part to operate outside ensured limits.
(8) 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 “NAK” package only.
(9) Human body model, 1.5 kΩ in series with 100 pF.
DC Electrical Characteristics
(1)
Symbol Parameter Conditions LF444A LF444 Units
Min Typ Max Min Typ Max
V
OS
Input Offset Voltage R
S
= 10k, T
A
= 25°C 2 5 3 10 mV
0°C ≤ T
A
≤ +70°C 6.5 12 mV
−55°C ≤ T
A
≤ +125°C 8 mV
ΔV
OS
/ΔT Average TC of Input Offset R
S
= 10 kΩ
10 10 μV/°C
Voltage
I
OS
Input Offset Current V
S
= ±15V
(1) (2)
T
j
= 25°C 5 25 5 50 pA
T
j
= 70°C 1.5 1.5 nA
T
j
= 125°C 10 nA
I
B
Input Bias Current V
S
= ±15V
(1) (2)
T
j
= 25°C 10 50 10 100 pA
T
j
= 70°C 3 3 nA
T
j
= 125°C 20 nA
(1) 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.
(2) 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 measured 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
= 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.
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