LTC6943

14

6943f

Linear Variable Differential Transformer (LVDT), Signal Conditioner

6943 • TA18

30k

0.005µF

30k

0.005µF

1/4 LTC6943

5

1µF

200k

OUTPUT

0V

±2.5V

0mm

±2.50mm

10k GAIN

TRIM

6

7

–

+

1/2 LT1013

10k

100k

1.5kHz

4.7k

1.2k

Q1

2N4338

AMPLITUDE

STABLE

SINE WAVE

SOURCE

7.5k

100k

0.01µF

100k

PHASE

TRIM

10µF

LVDT = SCHAEVITZ E-100

1N914

LT1004

1.2V

5V

5V

–5V

–5V

5V

5V

1k

–5V

LVDT

3

2

4

1

8

RD-BLUE

BLK

YEL-BLK

YEL-RED

BLUE

GRN

3

2

4

7

8

1

TO PIN 14, LTC6943

–

+

LT1011

9

7

6

3

11

12

15

10

1/4 LTC6943

–

+

LT1013

TYPICAL APPLICATIO S

6943 TA21

A1

LTC1150

C2

1µF

OUT

+15

0-10V

C3

0.1

= 0-100°C,

1°C ACCURACY

1M*

2.019k*

86k*

1

5

549k*

500k

1M

49.9k*

Q1

2N3906

Q2

TEMPERATURE

SENSOR

TRANSISTOR

0.01

C1

1µF

10k

+15

10k

LT1009

2.5V

LTC6943

+15V

0.1% FILM RESISTOR

SENSOR TRANSISTOR MAY BE ANY SMALL SIGNAL NPN-2N2222, 3904, ETC.

DO NOT USE GOLD DOPED TRANSISTORS.

13

16

2

14

*

–

+