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PDF LT1001 Data sheet ( Hoja de datos )
| Número de pieza | LT1001 | |
| Descripción | Precision Operational Amplifier | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LT1001 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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FEATURES
s Guaranteed Low Offset Voltage
LT1001AM
15µV max
LT1001C
60µV max
s Guaranteed Low Drift
LT1001AM 0.6µV/°C max
LT1001C 1.0µV/°C max
s Guaranteed Low Bias Current
LT1001AM
2nA max
LT1001C
4nA max
s Guaranteed CMRR
LT1001AM
114dB min
LT1001C
110dB min
s Guaranteed PSRR
LT1001AM
110dB min
LT1001C
106dB min
s Low Power Dissipation
LT1001AM 75mW max
LT1001C
80mW max
s Low Noise 0.3µVP-P
U
APPLICATIO S
s Thermocouple amplifiers
s Strain gauge amplifiers
s Low level signal processing
s High accuracy data acquisition
LT1001
Precision Operational
Amplifier
DESCRIPTIO
The LT®1001 significantly advances the state-of-the-
art of precision operational amplifiers. In the design,
processing, and testing of the device, particular atten-
tion has been paid to the optimization of the entire
distribution of several key parameters. Consequently,
the specifications of the lowest cost, commercial tem-
perature device, the LT1001C, have been dramatically
improved when compared to equivalent grades of com-
peting precision amplifiers.
Essentially, the input offset voltage of all units is less
than 50µV (see distribution plot below). This allows the
LT1001AM/883 to be specified at 15µV. Input bias and
offset currents, common-mode and power supply re-
jection of the LT1001C offer guaranteed performance
which were previously attainable only with expensive,
selected grades of other devices. Power dissipation is
nearly halved compared to the most popular precision
op amps, without adversely affecting noise or speed
performance. A beneficial by-product of lower dissipa-
tion is decreased warm-up drift. Output drive capability
of the LT1001 is also enhanced with voltage gain
guaranteed at 10mA of load current. For similar perfor-
mance in a dual precision op amp, with guaranteed
matching specifications, see the LT1002. Shown below
is a platinum resistance thermometer application.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
+15
1.2k**
Linearized Platinum Resistance Thermometer
with ±0.025°C Accuracy Over 0 to 100°C
1MEG.**
R plat. †
1k = 0°C
330k*
20k
GAIN
TRIM
10k* 2 –
LT1001
3+
6
10k*
1µf
2–
LT1001
3+
6
OUTPUT
LINEARITY
200Ω TRIM
0 TO 10V =
0 TO 100°C
LM129
90k* 20k
OFFSET TRIM
10k*
* ULTRONIX 105A WIREWOUND
** 1% FILM
† PLATINUM RTD
118MF (ROSEMOUNT, INC.)
‡ Trim sequence: trim offset (0°C = 1000.0Ω),
trim linearity (35°C = 1138.7Ω), trim gain
(100°C = 1392.6Ω). Repeat until all three
points are fixed with ±0.025°C.
1001 TA01
Typical Distribution
of Offset Voltage
VS = ±15V, TA = 25°C
200 954 UNITS
FROM THREE RUNS
150
100
50
0
–60 –40 –20 0 20 40
INPUT OFFSET VOLTAGE (µV)
60
1001 TA02
1001fb
1
1 page  
TYPICAL PERFORMANCE CHARACTERISTICS
LT1001
Open Loop Voltage Gain
vs Temperature
1200k
1000k
800k
600k
VS = ±15V, VO = ±12V
VS = ±3V, VO = ±1V
400k
200k
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1001 G10
Common Mode Limit
vs Temperature
V+
–0.2
–0.4
–0.6
V + = 1.2 to 4V
–0.8
–1.0 V + = 12 to 18V
+1.0
+0.8
+0.6
+0.4
+0.2
V–
–50
–25
V – = –12 to –18V
V – = –1.2 to –4V
0 25 50 75
TEMPERATURE °C
100 125
1001 G13
Supply Current vs Supply Voltage
2.0
–55°C
25°C
1.5
125°C
1.0
0.5
± 3 ± 6 ± 9 ± 12 ± 15 ± 18 ± 21
SUPPLY VOLTAGE (V)
1001 G16
Open Loop Voltage Gain
Frequency Response
140
Gain, Phase Shift vs Frequency
20 80
120 16 PHASE 25°C
TA = 25°C
100 12
80
VS = ±15V
8
25°C
PHASE
60 MARGIN
40
VS = ±3V
20
0
4
GAIN 125°C
= 60°
0 GAIN 25°C & –55°C
VS = ±15V
–4
PHASE MARGIN –55°C = 63°
–20 –8
0.1 1 10 100 1k 10k 100k 1M 10M
0.1
125°C = 57°
0.2 0.5 1
FREQUENCY (Hz)
FREQUENCY (MHz)
1001 G11
100
120
140
160
180
200
220
2
1001 G12
Common Mode Rejection Ratio
vs Frequency
140
120
100
80
VS = ±15V
TA = 25°C
60
Power Supply Rejection Ratio
vs Frequency
140
120 VS = ±15V ±1V p-p
TA = 25°C
100
NEGATIVE SUPPLY
80
POSITIVE SUPPLY
60
40
40 20
20
1
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
1001 G14
Output Swing vs Load Resistance
16
NEGATIVE SWING
12
POSITIVE SWING
8
4
0
100
VS = ±15V
TA = 25°C
300 1000 3k
LOAD RESISTANCE (Ω)
10k
1001 G17
0
0.1 1 10 100 1k 10k 100k
FREQUENCY (Hz)
1001 G15
Output Short-Circuit Current
vs Time
50
40 –55°C
30 25°C
20 125°C
10 VS = ±15V
–10 125°C
–20 25°C
–30 –55°C
–40
–50
0 123 4
TIME FROM OPUTPUT SHORT (MINUTES)
1001 G18
1001fb
5
5 Page 
TYPICAL APPLICATIONS
Instrumentation Amplifier with ±300V
Common Mode Range and CMRR > 150dB
15V
LT1001
820Ω
INPUT
S1
1µF**
S2
(ACQUIRE)
01
OUT
(READ)
02
OUT
74C906
IN IN
74C04
74C86
C 12
4022 CLK
EN R
10k
1k
820Ω
10k
S3
3+
LT1001
6
2– +
0.1µF
0.2µF**
S4
OUTPUT
330k*
909Ω*
200Ω
GAIN
TRIM
A
2k*
+3
6
LM301A
–2
5.6k*
R1 1k
2k*
0.1µF
1) ALL DIODES IN4148
2) S1–S4 OPTO MOS SWITCH OFM-1A, THETA-J CORP.
3) *FILM RESISTOR
4) **POLYPROPYLENE CAPACITORS
5) ADJUST R1 for 93 Hz AT TEST POINT A
LM329
A FLYING CAPACITOR CHARGED BY CLOCKED
PHOTO DRIVEN FET SWITCHES CONVERTS A
DIFFERENTIAL SIGNAL AT A HIGH COMMON
MODE VOLTAGE TO A SINGLE ENDED SIGNAL
AT THE LT1001 OUTPUT.
1001 TA13
1001fb
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet LT1001.PDF ] | |
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