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LT1002AC Fiches technique(PDF) 6 Page - Linear Technology

No de pièce LT1002AC
Description  Dual, Matched Precision Operational Amplifier
PDF  16 Pages
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo LINER - Linear Technology

LT1002AC Fiches technique(HTML) 6 Page - Linear Technology

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6
LT1002
TYPICAL PERFORMANCE CHARACTERISTICS
±DIFFERENTIAL INPUT (VOLTS)
0.1
0
10
20
30
1.0
3.0
0.3
10
30
1002 G12
VS = ±15V
TA = 25°C
IB ≈ 1 nA
Input Bias Current vs.
Differential Input Voltage
TEMPERATURE (
°C)
–50
1200k
1000k
800k
600k
400k
200k
0
25
75
1002 G13
–25
0
50
100
125
VS = ±15V, VO = ±12V
VS = ±3V, VO = ±1V
Matching and Individual Amplifier
Bias and Offset Currents vs Temperature
TEMPERATURE (
°C)
–50
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
25
75
1001 G10
–25
0
50
100
125
VS = ±15V
MATCHING: NON INVERTING
BIAS CURRENT
MA
TCH
ING: IN
VERING &
NO
N-IN
V. OFF
SET CURR
ENT
IND
IVID
UAL
AMP
BIAS
CURRENT
IND
IVID
UAL
AMP OFF
SET CURRENT
COMMON-MODE INPUT VOLTAGE
–15
1.5
1.0
0.5
0
–.5
–1.0
–1.5
–10
–5
0
5
1002 G11
10
15
VS = ±15V
TA = 25°C
DEVICE WITH POSITIVE INPUT CURRENT
DEVICE WITH NEGATIVE INPUT CURRENT
–
+
VCM
Ib
COMMON-MODE
INPUT RESISTANCE =
= 280G
Ω
28V
0.1nA
Input Bias Current
Over the Common Mode Range
Open Loop Voltage Gain
vs Temperature
FREQUENCY (Hz)
0.1
10M
1002 G14
10
100
10k
1M
1
1k
100k
140
120
100
80
60
40
20
0
–20
TA = 25°C
VS = ±15V
VS = ±3V
Open Loop Voltage Gain
Frequency Response
FREQUENCY (MHz)
0.1
0.2
0.5
1
1002 G15
PHASE MARGIN –55
°C = 63°
125
°C = 57°
20
16
12
8
4
0
–4
–8
80
100
120
140
160
180
200
220
2
PHASE 25
°C
GAIN 125
°C
VS = ±15V
GAIN 25
°C & –55°C
25
°C
PHASE
MARGIN
= 60
°
Gain, Phase Shift vs. Frequency
Open Loop Gain Mismatch
vs Frequency
FREQUENCY (Hz)
1
1.0
0.8
0.6
0.4
0.2
0
10k
1002 G16
10
100
1k
100k
VS = ±15V
TA = 25°C
PERCENT GAIN MISMATCH =
OUTPUT A – OUTPUT B
1
/2(OUTPUT A + OUTPUT B)
× 100%
FREQUENCY (Hz)
1
100
10
1
0.1
0.01
0.001
10k
1002 G17
10
100
1k
100k
AV = 1000
AV = +1
IO = ±1mA
VS = ±15V
TA = 25°C
Closed Loop Output Impedance
Power Supply Rejection and
PSRR Match vs Frequency
FREQUENCY (Hz)
160
140
120
100
80
60
40
20
0
1002 G18
0.1
1
10
100
1k
10k
100k
VS = ±15V ±2V pp
TA = 25°C
MATCH (NEGATIVE SUPPLY)
MATCH (POSITIVE SUPPLY)
POSITIVE SUPPLY
NEGATIVE SUPPLY



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