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LT1002 の電気的特性と機能
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LT1002のメーカーはLinear Technologyです、この部品の機能は「Dual / Matched Precision Operational Amplifier」です。 |
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製品の詳細 ( Datasheet PDF )
| 部品番号 LT1002 |
| 部品説明 Dual / Matched Precision Operational Amplifier |
| メーカ Linear Technology |
ロゴ |
このページの下部にプレビューとLT1002ダウンロード（pdfファイル）リンクがあります。 Total 16 pages |
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FEATURES
s Guaranteed low offset voltage
LT1002A
60µV max
LT1002
100µV max
s Guaranteed offset voltage match
LT1002A
40µV max
LT1002
80µV max
s Guaranteed low drift
LT1002A 0.9µV/°C max
LT1002 1.3µV/°C max
s Guaranteed CMRR
LT1002A
110dB min
LT1002
110dB min
s Guaranteed channel separation
LT1002A
132dB min
LT1002
130dB min
s Guaranteed matching characteristics
s Low noise 0.35µVP-P
U
APPLICATIO S
s Thermocouple Amplifiers
s Strain Gauge Amplifiers
s Low level signal processing
s Medical instrumentation
s Precision dual limit threshold detection
s Instrumentation amplifiers
, LTC and LT are registered trademarks of Linear Technology Corporation
LT1002
Dual, Matched Precision
Operational Amplifier
DESCRIPTIO
The LT®1002 dual, matched precision operational ampli-
fiers combine excellent individual amplifier performance
with tight matching and temperature tracking between
amplifiers.
In the design, processing, and testing of the device,
particular attention has been paid to the optimization of the
entire distribution of several key parameters and their
matching. Consequently, the specifications of even the
low cost commercial grade (LT1002C) have been spec-
tacularly improved compared to presently available de-
vices.
Essentially, the input offset voltage of all units is less than
80µV, and matching between amplifiers is consistently
beter than 60µV (see distribution plot below). Input bias
and offset currents, channel separation, common mode
and power suply rejections of the LT1002C are all speci-
fied at levels which were previsouly attainable only on very
expensive, selected grades of other dual devices. Power
dissipation is nearly halved compared to the most popular
precision duals, without adversely affecting noise or speed
performance. A by-product of lower dissipation is de-
creased warm-up drift. For even better performance in a
single precision op amp, refer to the LT1001 data sheet. A
bridge signal conditioning application is shown below.
This circuit illustrates the requirement for both excellent
matching and individual amplifier specifications.
TYPICAL APPLICATIO
15V
8.2k
2k*
LM329
Strain Gauge Signal Conditioner with Bridge Excitation
4.99k*
4+
1/2
LT1002
3–
13 2k
IN4148
15V
100Ω 5W
2N2219
REFERENCE OUT
TO MONITORING
A/D CONVERTER
350Ω BRIDGE
301k*
3+
10k LT1001
ZERO 2 –
6
1µF
10 –
1/2
LT1002
11 +
IN4148
6 2k
2N2907
100Ω
5W
–15V
GAIN
TRIM
*RN60C FILM RESISTORS
0V TO 10V
OUT
340k*
1.1k*
1002 TA01
Distribution of Offset Voltage Match
70
VS = ±15V
60 TA = 25°C
287 UNITS TESTED
50
40
30
20
10
0
–100 –80 –60 –40 –20 0 20 40 60 80 100
INPUT OFFSET VOLTAGE MATCH (µV)
1002 TA02
1002fb
1
1 Page
UW
ELECTRICAL CHARACTERISTICS, I DIVIDUAL A PLIFIERS
LT1002
The q denotes the specifications which apply over the temperature range – 55°C ≤ TA ≤ 125°C, VS = ±15V,unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
LT1002AM
MIN TYP MAX
LT1002M
MIN TYP MAX
UNITS
VOS Input Offset Voltage
(Note 2)
q 30 150
45 230
µV
∆VOS Average Input Offset Voltage Drift
∆Temp
q 0.2 0.9
0.3 1.3
µV/°C
IOS Input Offset Current
q 0.8 5.6
1.2 8.5
nA
IB Input Bias Current
q ±1.0 ±6.0
±1.5 ±9.0
nA
AVOL Large Signal Voltage Gain
RL ≥ 2kΩ, VO = ±10V
q 300 700
200 700
V/mV
CMRR Common Mode Rejection Ratio
VCM = ±13V
q 106 122
104 120
dB
PSRR Power Supply Rejection Ratio
VS = ±3V to ±18V
q 102 117
96 117
dB
Input Voltage Range
q ±13 ±14
±13 ±14
V
VOUT Output Voltage Swing
RL ≥ 2kΩ
q ±12.5 ±13.5
±12.0 ±13.5
V
Pd Power Dissipation
per amplifier
No load
q 55 90
60 100
mW
The q denotes the specifications which apply over the temperature range 0°C ≤ TA ≤ 70°C, VS = ±15V, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
LT1002AC
MIN TYP MAX
LT1002C
MIN TYP MAX
VOS Input Offset Voltage
(Note 2)
q 20 100
30 160
∆VOS Average Input Offset Voltage Drift
∆Temp
q 0.2 0.9
0.3 1.3
IOS Input Offset Current
q 0.5 4.2
0.6 5.7
IB Input Bias Current
q ±0.7 ±4.5
±1.0 ±6.0
AVOL Large Signal Voltage Gain
RL ≥ 2kΩ, VO = ±10V
q 350 750
250 750
CMRR Common Mode Rejection Ratio
VCM = ±13V
q 108 124
106 123
PSRR Power Supply Rejection Ratio
VS = ±3V to ±18V
q 105 120
100 120
Input Voltage Range
q ±13 ±14
±13 ±14
VOUT Output Voltage Swing
RL ≥ 2kΩ
q ±12.5 ±13.8
±12.5 ±13.8
Pd Power Dissipation
per amplifier
No Load
q 50 85
55 90
WU
ATCHI G CHARACTERISTICS
UNITS
µV
µV/°C
nA
nA
V/mV
dB
dB
V
V
mW
VS = ±15V, TA = 25°C, unless otherwise noted.
SYMBOL
IB+
IOS+
IOS–
∆CMRR
∆PSRR
PARAMETER
Input Offset Voltage Match
Average Non-Inverting Bias
Current
Non-Inverting Offset Current
Inverting Offset Current
Common Mode Rejection Ratio
Match
Power Supply Rejection Ratio
Match
Channel Seperation
CONDITIONS
VCM = ±13V
VS = ±3V to ±18V
f ≤ 10Hz (Note 5)
LT1002AM/AC
MIN TYP MAX
– 15 40
– ±0.6 ±3.5
– 0.6 3.5
– 0.6 3.5
110 132 –
108 130
132 148
–
–
LT1002M/C
MIN TYP MAX
– 25 80
– ±0.7 ±4.8
– 0.7 6.0
– 0.7 6.0
108 132 –
102 128
130 146
–
–
UNITS
µV
nA
nA
nA
dB
dB
dB
1002fb
3
3Pages
LT1002
TYPICAL PERFORMANCE CHARACTERISTICS
Matching and Individual Amplifier
Input Bias Current
Bias and Offset Currents vs Temperature Over the Common Mode Range
2.0
1.8 VS = ±15V
1.6
1.4 MATCHING: NON INVERTING
1.2 BIAS CURRENT
1.0
0.8
0.6
0.4
0.2
INDIIVNIDDIUVAIDLUAAMLNPAOMMONAPF-TIFNCBSVHIEA.INTSOGFCC:FUUSINRREVRRTEEECRNNUITTNRGRE&NT
0
–50 –25 0 25 50 75 100 125
TEMPERATURE (°C)
1.5
–
1.0 Ib +
VCM
0.5 DEVICE WITH POSITIVE INPUT CURRENT
0 VS = ±15V
TA = 25°C
–.5
DEVICE WITH NEGATIVE INPUT CURRENT
–1.0
–1.5
–15
COMMON-MODE
INPUT RESISTANCE
=
28V
0.1nA
=
280GΩ
–10 –5 0 5 10 15
COMMON-MODE INPUT VOLTAGE
1001 G10
1002 G11
Open Loop Voltage Gain
vs Temperature
1200k
1000k
800k
VS = ±15V, VO = ±12V
600k
400k
VS = ±3V, VO = ±1V
200k
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1002 G13
Open Loop Voltage Gain
Frequency Response
140
120
TA = 25°C
100
80
VS = ±15V
60
40
VS = ±3V
20
0
–20
0.1 1 10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
1002 G14
Open Loop Gain Mismatch
vs Frequency
1.0
VS = ±15V
TA = 25°C
0.8
Closed Loop Output Impedance
100
10
AV = 1000
0.6 1
0.4
0.2
0
1
PERCENT GAIN MISMATCH =
OUTPUT A – OUTPUT B × 100%
1/2(OUTPUT A + OUTPUT B)
0.1
0.01
10 100 1k 10k
FREQUENCY (Hz)
100k
1002 G16
0.001
1
AV = +1
IO = ±1mA
VS = ±15V
TA = 25°C
10 100 1k 10k
FREQUENCY (Hz)
100k
1002 G17
Input Bias Current vs.
Differential Input Voltage
30
VS = ±15V
TA = 25°C
20
10
IB ≈ 1 nA
0
0.1 0.3 1.0 3.0 10 30
± DIFFERENTIAL INPUT (VOLTS)
1002 G12
Gain, Phase Shift vs. Frequency
20 80
16 PHASE 25°C
12
25°C
8 PHASE
MARGIN
4
GAIN 125°C
= 60°
0 GAIN 25°C & –55°C
VS = ±15V
–4
PHASE MARGIN –55°C = 63°
125°C = 57°
–8
0.1 0.2
0.5
FREQUENCY (MHz)
1
100
120
140
160
180
200
220
2
1002 G15
Power Supply Rejection and
PSRR Match vs Frequency
160
VS = ±15V ±2V pp
140 TA = 25°C
MATCH (NEGATIVE SUPPLY)
120
100
80
60 NEGATIVE SUPPLY
POSITIVE SUPPLY
40
MATCH (POSITIVE SUPPLY)
20
0
0.1 1
10 100 1k
FREQUENCY (Hz)
10k 100k
1002 G18
1002fb
6
6 Page
合計 : 16 ページ |
| PDF ダウンロード [ LT1002 データシート.PDF ] |
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データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
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