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LT1002AC の電気的特性と機能
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LT1002AC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 LT1002AC |
| 部品説明 Dual / Matched Precision Operational Amplifier |
| メーカ Linear Technology |
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このページの下部にプレビューとLT1002AC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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LT1002
Dual, Matched Precision
Operational Amplifier
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 maching characteristics
s Low noise 0.35µV p-p
U
APPLICATIONS
s Thermocouple Amplifiers
s Strain Gauge Amplifiers
s Low level signal processing
s Medical instrumentation
s Precision dual limit threshold detection
s Instrumentation amplifiers
DESCRIPTION
The LT®1002 dual, matched precision operational amplifiers
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 commer-
cial grade (the LT1002C) have been spectacularly improved
compared to presently available devices.
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 specified 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 ad-
versely affecting noise or speed performance. A by-product of
lower dissipation is decreased 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 excel-
lent matching and individual amplifier specifications.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Strain Gauge Signal Conditioner with Bridge Excitation
+15V
8.2k
2.0K*
LM329
4+
1/2LT1002
4.99k* 3 –
13 2k
IN4148
350Ω BRIDGE
+15V
100Ω 5W
2N2219
REFERENCE OUT
TO MONITORING
A/D CONVERTER
3+
6
* 10k LT1001
301k ZERO 2 –
1µF
10 –
1/2LT1002
11 +
IN4148
6 2k
2N2907
100Ω
5W
–15V
GAIN
TRIM
*RN60C FILM RESISTORS
0 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
1
1 Page
UW
ELECTRICAL CHARACTERISTICS, I DIVIDUAL A PLIFIERS
LT1002
VS = ±15V, – 55°C ≤ TA ≤ 125°C, unless otherwise noted
SYMBOL
VOS
∆VOS
∆Temp
IOS
IB
AVOL
CMRR
PSRR
VOUT
Pd
PARAMETER
Input Offset Voltage
Average Input Offset Voltage Drift
Input Offset Current
Input Bias Current
Large Signal Voltage Gain
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Input Voltage Range
Output Voltage Swing
Power Dissipation
per amplifier
CONDITIONS
Note 1
RL ≥ 2kΩ, VO = ±10V
VCM = ±13V
VS = ±3V to ±18V
RL ≥ 2kΩ
No load
LT1002AM
MIN TYP MAX
LT1002M
MIN TYP MAX
q 30 150
45 230
q 0.2 0.9
0.3 1.3
q 0.8 5.6
q ±1.0 ±6.0
q 300 700
q 106 122
q 102 117
q ±13 ±14
q ±12.5 ±13.5
q 55 90
200
104
96
±13
±12.0
1.2
± 1.5
700
120
117
±14
±13.5
60
8.5
±9.0
100
UNITS
µV
µV/°C
nA
nA
V/mV
dB
dB
V
V
mW
VS = ±15V, 0°C ≤ TA ≤ 70°C, unless otherwise noted
SYMBOL
VOS
∆VOS
∆Temp
IOS
IB
AVOL
CMRR
PSRR
VOUT
Pd
PARAMETER
Input Offset Voltage
Average Input Offset Voltage Drift
Input Offset Current
Input Bias Current
Large Signal Voltage Gain
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Input Voltage Range
Output Voltage Swing
Power Dissipation
per amplifier
CONDITIONS
Note 1
RL ≥ 2kΩ, VO = ±10V
VCM = ±13V
VS = ±3V to ±18V
RL ≥ 2kΩ
No Load
LT1002AC
MIN TYP MAX
LT1002C
MIN TYP MAX
q 20 100
30 160
q 0.2 0.9
0.3 1.3
q 0.5 4.2
0.6 5.7
q ±0.7 ±4.5
±1.0 ±6.0
q 350 750
250 750
q 108 124
106 123
q 105 120
100 120
q ±13 ±14
±13 ±14
q ±12.5 ±13.8
±12.5 ±13.8
q 50 85
55 90
UNITS
µV
µV/°C
nA
nA
V/mV
dB
dB
V
V
mW
The q denotes the specifications which apply over the full operating
temperature range.
For MIL-STD components, please refer to LTC 883C data sheet for test
listing and parameters.
Note 1: Offset voltage measured with high speed test equipment,
approximately 1second after power is applied.
Note 2: This parameter is tested on a sample basis only.
Note 3: Long Term Input Offset Voltage Stability refers to the averaged
trend line of VOS versus Time over extended periods after the first 30 days
of operation. Excluding the initial hour of operation, changes in VOS during
the first 30 operating days are typically 2.5µV.
Note 4: Parameter is guaranteed by design.
Note 5: 10Hz noise voltage density is sample tested on every lot.
Devices 100% tested at 10Hz are available on request.
Note 6: The V + supply terminals are completely independent and may be
powered by separate supplies if desired (this approach, however, would
sacrifice the advantages of the power supply rejection ratio matching). The
V – supply terminals are both connected to the common substrate and
must be tied to the same voltage. Both V – pins should be used.
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 1.5
1.8 VS = ±15V
–
1.6
1.0 Ib +
VCM
1.4
MATCHING: NON INVERTING
1.2 BIAS CURRENT
0.5 DEVICE WITH POSITIVE INPUT 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
0 VS = ±15V
TA = 25°C
–.5
DEVICE WITH NEGATIVE INPUT CURRENT
–1.0
–1.5
–15
COMMON-MODE
INPUT RESISTANCE
=
02.18nVA=
280G
Ω
–10 –5 0 5 10 15
TEMPERATURE (°C)
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
100
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°
–8 125°C = 57°
0.1 0.2
0.5
FREQUENCY (MHz)
1
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 10k 100k
FREQUENCY (Hz)
1002 G18
6
6 Page
合計 : 16 ページ |
| PDF ダウンロード [ LT1002AC 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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| 部品番号 | 部品説明 | メーカ |
| LT1002A | Dual / Matched Precision Operational Amplifier | Linear Technology |
| LT1002AC | Dual / Matched Precision Operational Amplifier | Linear Technology |
| LT1002ACJ | Dual / Matched Precision Operational Amplifier | Linear Technology |
| LT1002ACN | Dual / Matched Precision Operational Amplifier | Linear Technology |