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LTC6943IGN Fiches technique(PDF) 10 Page - Linear Technology

No de pièce LTC6943IGN
Description  Micropower, Dual Precision Instrumentation Switched Capacitor Building Block
PDF  16 Pages
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Fabricant  LINER [Linear Technology]
Site Internet  http://www.linear.com
Logo LINER - Linear Technology

LTC6943IGN Fiches technique(HTML) 10 Page - Linear Technology

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LTC6943
10
6943f
Voltage Controlled Current Source with Ground Referred Input and Output
6943 • TA11
7
12
1µF
100Ω
VIN
100Ω
INPUT
0V TO 2V
IOUT =
1/2 LTC6943
11
14
10
9
6
1k
4
1
8
5V
2
3
1µF
0.001µF
OPERATES FROM A SINGLE 5V SUPPLY
0.68µF
5V
3
–
+
15
1/2 LT1013
TYPICAL APPLICATIO S
Lock-In Amplifier (= Extremely Narrow-Band Amplifier)
6943 • TA13
11
1/4 LTC6943
T1 = TF5SX17ZZ, TOROTEL
RT = YSI THERMISTOR 44006
≈ 6.19k AT 37.5°C
MATCH 0.05%
6.19k = VISHAY S-102
OPERATE LTC6943 WITH
±5V SUPPLIES
LOCK-IN AMPLIFIER TECHNIQUE
USED TO EXTRACT VERY SMALL
SIGNALS BURIED INTO NOISE
5V
–5V
2
6.19k
100k
10k*
10k*
100Ω
0.01µF47µF
6.19k
1
4
3
6.19k
T1
500Hz
SINE DRIVE
THERMISTOR BRIDGE
IS THE SIGNAL SOURCE
SYNCHRONOUS
DEMODULATOR
RT
3
6
–
+
LT1007
5V
5V
–5V
ZERO CROSSING DETECTOR
2
3
4
1
8
1k
0.002
PHASE TRIM
50k
10k
7
5V
–5V
3
2
1M
1µF
–
+
LT1056
5V
–5V
2
3
4
6
–
+
LT1012
VOUT = 1000 • DC
BRIDGE SIGNAL
10
12
14
–
+
LT1011
*
+



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