LTC1043M View Datasheet(PDF) - Linear Technology

Part Name

Description

Manufacturer

LTC1043M

Dual Precision Instrumentation Switched Capacitor Building Block

Linear Technology 

LTC1043

TYPICAL APPLICATIO S

Quad Single 5V Supply, Low Hold Step, Sample-and-Hold

NC 7

8

11

VIN

5V

2–

4

1

1/4 LT1014

3+

11

CL

0.01µF

OUTPUT

NC 6

5

2

VIN

13 –

14

1/4 LT1014

12 +

OUTPUT

CL

0.01µF

NC 13

14

12

VIN

6–

7

1/4 LT1014

5+

OUTPUT

CL

0.01µF

LTC1043 • A15

NC 18

9–

8

1/4 LT1014

OUTPUT

15

10 +

HOLD

SAMPLE

3

VIN

16

17

4

CL

0.01µF

– 5V

FOR 1V ≤ VIN ≤ 4V, THE HOLD STEP IS ≤ 300µV

ACQUISITION TIME ~ 8 • RON CH FOR 10-BIT ACCURACY

LTC1043 • A16

12

Single Supply Precision Linearized Platinum RTD Signal Conditioner

2k

1µF

5V

3+ 8

1

1/2 LT1013

2–

4

0.1µF

1/2 LTC1043

7

8

250k*

10k*

2.4k 5V

2.74k*

50k

ZERO

ADJUST

LT1009

2.5V

8.25k*

4

1/2 LTC1043

5

6

11

1µF

12

887Ω

2

1µF

3

(LINEARITY CORRECTION LOOP)

0V TO 4V = 0°C TO 400°C

5+

± 0.05°C

7

1/2 LT1013

6–

1k

GAIN

5k

ADJUST

1µF

8.06k*

13

14

1mA

Rp = ROSEMOUNT 118MFRTD

*1% FILM RESISTOR

Rp

100Ω

AT 0°C

15

18

16

17

0.01µF

TRIM SEQUENCE:

SET SENSOR TO 0°C VALUE. ADJUST ZERO FOR 0V OUT

SET SENSOR TO 100°C VALUE. ADJUST GAIN FOR 1,000V OUT

SET SENSOR TO 400°C VALUE. ADJUST LINEARITY FOR 4,000V OUT

REPEAT AS REQUIRED

1k*

LTC1043 • A17

1043fa

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