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LF412ACN Folha de dados(PDF) 5 Page - Texas Instruments

Nome de Peças LF412ACN
Descrição Electrónicos  Low Drift Dual JFET Input Operational Amplifier
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

LF412ACN Folha de dados(HTML) 5 Page - Texas Instruments

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LF412-N
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SNOSBH7F – APRIL 1999 – REVISED SEPTEMBER 2014
6.4 Thermal Information
THERMAL METRIC(1)
TO Package
PDIP Package
UNIT
RθJA
Junction-to-ambient thermal resistance (Typical)
152
115
RθJC(top)
Junction-to-case (top) thermal resistance
RθJB
Junction-to-board thermal resistance
°C/W
ψJT
Junction-to-top characterization parameter
ψJB
Junction-to-board characterization parameter
RθJC(bot)
Junction-to-case (bottom) thermal resistance
(1)
For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
6.5 DC Electrical Characteristics
over operating free-air temperature range (unless otherwise noted)
LF412A(1)
LF412(1)
PARAMETER
TEST CONDITIONS
UNIT
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/Δ Average TC of Input
RS=10 kΩ
7
7
μV/°C
T
Offset Voltage
Tj=25°C
25
100
25
100
pA
IOS
Input Offset Current
VS=±15V
(1) (2)
Tj=70°C
2
2
nA
Tj=125°C
25
25
nA
Tj=25°C
50
200
50
200
pA
IB
Input Bias Current
VS=±15V
(1) (2)
Tj=70°C
4
4
nA
Tj=125°C
50
50
nA
RIN
Input Resistance
Tj=25°C
1012
1012
Ω
RL=2k, TA=25°C, VS=±15V,
50
200
25
200
Large Signal
VO=±10V
AVOL
V/mV
Voltage Gain
Over Temperature
25
200
15
200
VO
Output Voltage Swing
VS=±15V, RL=10k
±12
±13.5
±12
±13.5
V
±16
+19.5
±11
+14.5
V
Input Common-Mode
VCM
Voltage Range
−16.5
−11.5
V
Common-Mode
CMRR
RS≤10k
80
100
70
100
dB
Rejection Ratio
Supply Voltage
PSRR
See(3)
80
100
70
100
dB
Rejection 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 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.
(3)
Supply voltage rejection ratio is measured for both supply magnitudes increasing or decreasing simultaneously in accordance with
common practice. VS = ±6V to ±15V.
6.6 AC Electrical Characteristics
over operating free-air temperature range (unless otherwise noted)
LF412A(1)
LF412(1)
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
Amplifier to
TA=25°C, f=1 Hz-20 kHz
−120
−120
dB
Amplifier Coupling
(Input Referred)
(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 © 1999–2014, Texas Instruments Incorporated
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