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LF256H Arkusz danych(PDF) 4 Page - Texas Instruments

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Numer części LF256H
Szczegółowy opis  JFET Input Operational Amplifiers
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Strona internetowa  http://www.ti.com
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LF256H Arkusz danych(HTML) 4 Page - Texas Instruments

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LF155, LF156, LF355, LF356, LF357
SNOSBH0C – MAY 2000 – REVISED MARCH 2013
www.ti.com
DC Electrical Characteristics
LF256/7
LF155/6
LF355/6/7
LF356B
Symbol
Parameter
Conditions
Units
Min
Typ
Max
Min
Typ
Max
Min
Typ
Max
VOS
Input Offset Voltage
RS=50Ω, TA=25°C
3
5
3
5
3
10
mV
Over Temperature
7
6.5
13
mV
ΔVOS/ΔT
Average TC of Input
RS=50Ω
5
5
5
μV/°C
Offset Voltage
ΔTC/ΔVOS
Change in Average TC
RS=50Ω,
(2)
μV/°C
0.5
0.5
0.5
with VOS Adjust
per mV
IOS
Input Offset Current
TJ=25°C,
(1) (3)
3
20
3
20
3
50
pA
TJ≤THIGH
20
1
2
nA
IB
Input Bias Current
TJ=25°C,
(1) (3)
30
100
30
100
30
200
pA
TJ≤THIGH
50
5
8
nA
RIN
Input Resistance
TJ=25°C
1012
1012
1012
Ω
AVOL
Large Signal Voltage
VS=±15V, TA=25°C
50
200
50
200
25
200
V/mV
Gain
VO=±10V, RL=2k
Over Temperature
25
25
15
V/mV
VO
Output Voltage Swing
VS=±15V, RL=10k
±12
±13
±12
±13
±12
±13
V
VS=±15V, RL=2k
±10
±12
±10
±12
±10
±12
V
VCM
Input Common-Mode
VS=±15V
+15.1
±15.1
+15.1
V
±11
±11
+10
Voltage Range
−12
−12
−12
V
CMRR
Common-Mode
85
100
85
100
80
100
dB
Rejection Ratio
PSRR
Supply Voltage Rejection
(4)
85
100
85
100
80
100
dB
Ratio
(1)
Unless otherwise stated, these test conditions apply:
LF155/156
LF256/257
LF356B
LF355/6/7
Supply Voltage, VS
±15V
≤ VS ≤ ±20V
±15V
≤ VS ≤ ±20V
±15V
≤ VS ±20V
VS= ±15V
TA
−55°C ≤ TA
−25°C ≤ TA ≤ +85°C
0°C
≤ TA ≤ +70°C
0°C
≤ TA ≤ +70°C
+125°C
THIGH
+125°C
+85°C
+70°C
+70°C
and VOS, IB and IOS are measured at VCM = 0.
(2)
The Temperature Coefficient of the adjusted input offset voltage changes only a small amount (0.5
μV/°C typically) for each mV of
adjustment from its original unadjusted value. Common-mode rejection and open loop voltage gain are also unaffected by offset
adjustment.
(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 = TA + θJA 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 is measured for both supply magnitudes increasing or decreasing simultaneously, in accordance with common
practice.
DC Electrical Characteristics
TA = TJ = 25°C, VS = ±15V
LF155
LF355
LF156/256/257/356B
LF356
LF357
Parameter
Units
Typ
Max
Typ
Max
Typ
Max
Typ
Max
Typ
Max
Supply
2
4
2
4
5
7
5
10
5
10
mA
Current
4
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Copyright © 2000–2013, Texas Instruments Incorporated
Product Folder Links: LF155 LF156 LF355 LF356 LF357


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