11

LT1001

Information furnished by Linear Technology Corporation is believed to be accurate and

reliable. However, no responsibility is assumed for its use. Linear Technology Corpora-

tion makes no representation that the interconnection of its circuits as described herein

will not infringe on existing patent rights.

Instrumentation Amplifier with

±300V

Common Mode Range and CMRR > 150dB

+

OUT

OUTPUT

1001 TA13

**

1

µF

0.1

µF

0.1

µF

**

0.2

µF

330k*

200

Ω

GAIN

TRIM

820

Ω

820

Ω

909

Ω*

10k

OUT

IN

INPUT

+15V

IN

10k

1k

74C906

(ACQUIRE)

S1

S2

S3

S4

02

01

(READ)

12

2

3

6

2

3

2k*

2k*

R1

1k

5.6k*

6

C

EN

R

CLK

74C04

74C86

4022

–

+

–

+

LT1001

A

LM301A

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.