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Teilenummer | LT1006 |
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Beschreibung | Precision / Single Supply Op Amp | |
Hersteller | Linear Technology | |
Logo | ||
Gesamt 16 Seiten FEATURES
■ Single Supply Operation
Input Voltage Range Extends to Ground
Output Swings to Ground while Sinking Current
■ Guaranteed Offset Voltage: 50µV Max
■ Guaranteed Low Drift: 1.3µV/°C Max
■ Guaranteed Offset Current: 0.5nA Max
■ Guaranteed High Gain
5mA Load Current: 1.5 Million Min
17mA Load Current: 0.8 Million Min
■ Guaranteed Low Supply Current: 520µA Max
■ Supply Current can be Reduced by a Factor of 4
■ Low Voltage Noise, 0.1Hz to 10Hz: 0.55µVP-P
Low Current Noise—
Better than OP-07: 0.07pA/√Hz at 10Hz
■ High Input Impedance: 250MΩ Min
■ Minimum Supply Voltage: 2.7V Min
U
APPLICATIO S
■ Low Power Sample-and-Hold Circuits
■ Battery-Powered Precision Instrumentation
Strain Gauge Signal Conditioners
Thermocouple Amplifiers
■ 4mA to 20mA Current Loop Transmitters
■ Active Filters
LT1006
Precision, Single Supply
Op Amp
DESCRIPTIO
The LT®1006 is the first precision single supply operational
amplifier. Its design has been optimized for single supply
operation with a full set of specifications at 5V.
Specifications at ±15V are also provided.
The LT1006 has a low offset voltage of 20µV, drift of
0.2µV/°C, offset current of 120pA, gain of 2.5 million,
common mode rejection of 114dB and power supply
rejection of 126dB.
Although supply current is only 340µA, a novel output
stage can source or sink in excess of 20mA while retaining
high voltage gain. Common mode input range includes
ground to accommodate low ground-referenced inputs
from strain gauges or thermocouples, and output can
swing to within a few millivolts of ground. If a higher
slew rate (in excess of 1V/µs) or micropower operation
(supply current down to 90µA) is required, the operating
currents can be modified by connecting an external
optional resistor to Pin 8.
For similar single supply precision dual and quad op amps,
please see the LT1013/LT1014 data sheet. For micropower
dual and quad op amps, please see the LT1078/LT1079
data sheet.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
LT1006 Single Supply, Micropower Sample and Hold
9V
360k 1/4 CD4066
390Ω
S3
1/4 CD4066 360k
S4 390Ω
INPUT
0V TO 5V
7
2– 8
A1
3
LT1006
+
4
6
SAMPLE-HOLD COMMAND
HIGH = SAMPLE
LOW = HOLD
1/2 CD4066
S1
S2
1/2 CD4066
LT1006 • TA01
0.01µF
8
2–
A2
7
LT1006
3+ 4
6
OUTPUT
ACQUISITION TIME
HOLD SETTLING TIME
S-H OFFSET
HOLD SUPPLY CURRENT
SAMPLE SUPPLY CURRENT
1kHz SAMPLE RATE CURRENT
20µs
10µs
1mV
250µA
5.0mA
800µA
Distribution of Input Offset Voltage
20
18
VS = 5V, 0V
TA = 25°C
16 350 LT1006s TESTED
FROM TWO RUNS
14 J AND N PACKAGES
12
10
8
6
4
2
0
–80
–40
0
40 80
INPUT OFFSET VOLTAGE (µV)
LT1006 • G01
1006fa
1
LT1006
TYPICAL PERFOR A CE CHARACTERISTICS
Offset Voltage Drift with Temperature
of Representative Units
150
120
VS = 5V, 0V
VCM = 0.1V
90
60
30
0
–30
–60
–90
–120
–150
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
LT1006 • G02
Offset Voltage vs Balanced Source
Resistor
10
VS = 5V, 0V, – 55°C TO 125°C
RS
–
1.0 RS
+
VS = ±15V,
–55°C TO 125°C
0.1
VS = ±15V, 25°C
0.01 VS = 5V, 0V, 25°C
1k 3k 10k 30k 100k 300k 1M 3M 10M
BALANCED SOURCE RESISTANCE, RS (Ω)
LT1006 • G03
Warm-Up Drift
2.0
VS = 5V, 0V
TA = 25°C
1.5
1.0
0.5
0
0
LT1006 METAL CAN (H) PACKAGE
LT1006 CERDIP (J) PACKAGE
123
TIME AFTER POWER ON (MIN)
4
LT1006 • G05
Voltage Gain vs Load Resistance,
VS = 5V, 0V
10M
TA = –55°C
TA = 25°C
1M
TA = 125°C
100k
100
1k 10k
LOAD RESISTANCE TO GROUND (Ω)
LT1006 • G06
Input Bias Current vs Temperature
18
VCM = 0V
15
12
VS = 5V, 0V
9
6 VS = ±15V
3
Input Offset Current
vs Temperature
0.5
VCM = 0V
0.4
0.3
0.2 VS = 5V, 0V
VS = ±15V
0.1
0
–50 –25
0 25 50 75
TEMPERATURE (˚C)
100 125
LT1006 • G08
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
LT1006 • G09
6
VOS vs Common Mode Voltage
vs Temperature
500
VS = 5V, 0V
400
300
200
1 T = 125°C
100
0
1 T = 25°C
2 T = 25°C
–100
2 T = 125°C
–200
–300
–0.4
1 POSITIVE VOS
2 NEGATIVE VOS
0 0.4 0.8 1.0 1.4
COMMON MODE INPUT VOLTAGE (V)
LT1006 • G04
Voltage Gain vs Load Resistance
with VS = ±15V
10M
TA = 25°C
TA = –55°C
1M TA = 125°C
100k
100
1k 10k
LOAD RESISTANCE TO GROUND (Ω)
LT1006 • G07
Input Bias Current
vs Common Mode Voltage
5
15
4 10
35
20
1 –5
0 VS = 5V, 0V, T = 125°C –10
VS = ±15V,
–1
T = 25°C
VS = 5V, 0V, T = 25°C –15
0 – 6 –12 –18 –24
INPUT BIAS CURRENT (nA)
LT1006 • G10
1006fa
6 Page LT1006
TYPICAL APPLICATIO S
Micropower Thermocouple Signal Conditioner with Cold Junction Compensation
4.5V
(3AA CELLS)
100k
CATALYST
RESEARCH CORP
MODEL 2736
2.8V
R4
233k*
LT1034
1.2V
R1
1684*
R2
186*
R3
RT
1.8k*
56k
7
+8
LT1006
–4
0V TO 3V OUT =
0°C TO 60°C
± 0.75°C
5.76M*
TYPE J THERMOCOUPLE
5.98k*
TOTAL POWER CONSUMPTION ≤ 500µW
* = TRW MAR-6 0.1%
RT = YELLOW SPRINGS INST. CO
MODEL 44007 5k AT 25°C
LT1006 • TA08
5V
10k
5%
LT1004
1.235V
16.2k
1k
0°C
3.2k
6250Ω
T1
Linear Thermometer
5V
4
1/2 LTC1043
7
8
107k
11
1µF
12
13
16
0.001µF
17
14
3+ 7
LT1006
2
–4
6
51.1k
0V TO 1.000V =
0°C TO 100.0°C ±0.25°C
1µF 500Ω
100°C
100k
T1 = YELLOW SPRINGS #44201
ALL RESISTORS = TRW MAR-6 0.1% UNLESS NOTED
LT1006 • TA09
12
1006fa
12 Page | ||
Seiten | Gesamt 16 Seiten | |
PDF Download | [ LT1006 Schematic.PDF ] |
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