LTC1043CSW Linear Technology, LTC1043CSW Datasheet - Page 11

• Manufacturer Part Number: LTC1043CSW
• Description: IC BUILDNG BLK SW-CAP DUAL18SOIC
• Manufacturer: Linear Technology

Specifications of LTC1043CSW

• Applications: Instrumentation
• Voltage - Input: 3 ~ 18 V
• Number Of Outputs: 2
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 18-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Voltage - Output: -

TYPICAL APPLICATIO S
SINE DRIVE
1A
500Hz
N
10V
300mV
INPUT
RMS
GRN
T2
4
T1
5V
*1% RESISTOR
RED
T1B
30k*
1
3
0.01µF
6.19k
IS THE SIGNAL SOURCE
T2B
THERMISTOR BRIDGE
10k
50k
RED
30k*
ZERO CROSSING DETECTOR
RT
GRN
10k
10k
T2A
PHASE TRIM
0.002
6.19k
6.19k
BRN
1µF
1µF
U
Lock-In Amplifier (= Extremely Narrow-Band Amplifier)
3
2
2
3
18
6
+
–
+
–
LT1007
LT1011
1/2 LTC1043
1
–5V
5V
5V
0.01µF
2% ACCURACY DC 50MHZ
100:1 CREST FACTOR CAPABILITY
T1 TO T2 = YELLOW SPRINGS INST. CO.
THERMISTOR COMPOSITE
ENCLOSE T1 AND T2 IN STYROFOAM
5V
17
8
4
2
3
–5V
50MHz Termal RMS/DC Converter
4
1µF
6
7
+
5V
16
15
5
100k
100Ω
1k
47µF
13
1µF
1/4 LTC1043
14
10k*
0.01µF
3
2
SYNCHRONOUS
DEMODULATOR
+
–
LT1013
16
12
5V
8
4
2
3
–
+
–5V
1
LM301A
5V
100k*
10k*
301Ω*
30pF
1
CALIBRATION ADJUST
8
20k
10k
1M
*
1µF
T1 = TF5SX17ZZ, TOROTEL
R
MATCH 0.05%
6.19k = VISHAY S-102
OPERATE LTC1043 WITH
±5V SUPPLIES
LOCK-IN AMPLIFIER TECHNIQUE
USED TO EXTRACT VERY SMALL
SIGNALS BURIED INTO NOISE
T
= YSI THERMISTOR 44006
≈ 6.19k AT 37.5°C
2
3
5
6
+
–
–
+
LT1012
LT1013
–5V
5V
5V
4
7
6
LTC1043 • A013
LTC1043 • A14
LTC1043
10k
10k
V
BRIDGE SIGNAL
DC OUTPUT
0V TO 3.5V
OUT
= 1000 • DC
11
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