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LF412-N Datenblatt(PDF) 5 Page - Texas Instruments

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Teilenummer LF412-N
Bauteilbeschribung  LF412 Low Offset, Low Drift Dual JFET Input Operational Amplifier
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Hersteller  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LF412-N Datenblatt(HTML) 5 Page - Texas Instruments

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LF412-N
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SNOSBH7E – APRIL 1999 – REVISED MARCH 2013
DC Electrical Characteristics
Symbol
Parameter
Conditions
LF412A(1)
LF412(1)
Units
Min
Typ
Max
Min
Typ
Max
VOS
Input Offset Voltage
RS=10 kΩ, TA=25°C
0.5
1.0
1.0
3.0
mV
ΔVOS/ΔT
Average TC of Input
RS=10 kΩ
(2)
7
10
7
20
μV/°C
Offset Voltage
IOS
Input Offset Current
VS=±15V
(1) (3)
Tj=25°C
25
100
25
100
pA
Tj=70°C
2
2
nA
Tj=125°C
25
25
nA
IB
Input Bias Current
VS=±15V
(1) (3)
Tj=25°C
50
200
50
200
pA
Tj=70°C
4
4
nA
Tj=125°C
50
50
nA
RIN
Input Resistance
Tj=25°C
1012
1012
Ω
AVOL
Large Signal Voltage
RL=2k, TA=25°C
50
200
25
200
V/mV
Gain
VS=±15V, VO=±10V,
Over Temperature
25
200
15
200
V/mV
VO
Output Voltage Swing
VS=±15V, RL=10k
±12
±13.5
±12
±13.5
V
VCM
Input Common-Mode
±16
+19.5
±11
+14.5
V
Voltage Range
−16.5
−11.5
V
CMRR
Common-Mode Rejection
RS≤10k
80
100
70
100
dB
Ratio
PSRR
Supply Voltage Rejection
(4)80
100
70
100
dB
Ratio
IS
Supply Current
VO = 0V, RL = ∞
3.6
5.6
3.6
6.5
mA
(1)
Unless otherwise specified, the specifications apply over the full temperature range and for VS=±20V for the LF412A and for VS=±15V
for the LF412. VOS, IB, and IOS are measured at VCM=0.
(2)
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 specification.
(3)
The input bias currents are junction leakage currents which approximately double for every 10°C increase in the junction temperature,
Tj. 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, PD. Tj=TAjA PD where θjA 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.
(4)
Supply voltage rejection ratio is measured for both supply magnitudes increasing or decreasing simultaneously in accordance with
common practice. VS = ±6V to ±15V.
AC Electrical Characteristics
LF412A(1)
LF412(1)
Symbol
Parameter
Conditions
Units
Min
Typ
Max
Min
Typ
Max
Amplifier to Amplifier
TA=25°C, f=1 Hz-20 kHz
−120
−120
dB
Coupling
(Input Referred)
SR
Slew Rate
VS=±15V, TA=25°C
10
15
8
15
V/
μs
GBW
Gain-Bandwidth Product
VS=±15V, TA=25°C
3
4
2.7
4
MHz
THD
Total Harmonic Dist
AV=+10, RL=10k,
≤0.02
≤0.02
%
VO=20 Vp-p,
BW=20 Hz-20 kHz
en
Equivalent Input Noise
TA=25°C, RS=100Ω,
25
25
nV /
√Hz
Voltage
f=1 kHz
in
Equivalent Input Noise
TA=25°C,
0.01
0.01
pA /
√Hz
Current
f=1 kHz
(1)
Unless otherwise specified, the specifications apply over the full temperature range and for VS=±20V for the LF412A and for VS=±15V
for the LF412. VOS, IB, and IOS are measured at VCM=0.
Copyright © 1999–2013, Texas Instruments Incorporated
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