ML2284BCS View Datasheet(PDF) -

APPLICATIONS (Continued)

ML2281, ML2282, ML2284, ML2288

VCC

(5VDC)

+

VIN

VIN (+)

VCC

ML2281

+

10µF

10kΩ

FS

ADJ.

1.2kΩ

VIN (–)

VREF

SETS ZERO

CODE VOLTAGE

330Ω

2.7kΩ

1kΩ

2VDC

ZERO ADJ.

1kΩ

3V

+

1µF

SET

VOLTAGE SPAN

10V

STRAIN GAUGE

LOAD CELL

300Ω/30mV FS

330Ω

6.8kΩ

5.1V

1kΩ

GAIN

2.7kΩ

10kΩ

+

VCC

–

VREF

CLK

DUAL

1MΩ

ML2281 CS

+

–IN

–

DUAL

+IN

DO

1MΩ 20kΩ

10V

10kΩ

OFFSET

20kΩ

• USES ONE MORE WIRE THAN LOAD CELL ITSELF

• TWO MINI-DIPs COULD BE MOUNTED INSIDE LOAD CELL

FOR DIGITAL OUTPUT TRANSDUCER

• ELECTRONIC OFFSET AND GAIN TRIMS RELAX MECHANICAL

SPECS FOR GAUGE FACTOR AND OFFSET

• LOW LEVEL CELL OUTPUT IS CONVERTED IMMEDIATELY FOR

HIGH NOISE IMMUNITY

Zero-Shift and Span Adjust: 2V - VIN - 5V

Digital Load Cell

tREF

+ TYPE J

T1 –

+

1kΩ

–

88.2k

CH0

VCC

VCC

2kΩ

22kΩ

1kΩ 910Ω

TL064

+

–

ML2288

CH7

COM

VREF

SERIAL I/O

tREF

+ TYPE J

T8 –

+

1kΩ

–

88.2kΩ

LM335

tREF

TL064

TL064

820Ω

20kΩ

1kΩ 3kΩ VCC

LM385

USES THE PSEUDO-DIFFERENTIAL MODE TO KEEP THE

DIFFERENTIAL INPUTS CONSTANT WITH CHANGES IN REFERENCE TEMPERATURE (TREF)

Convert 8 Thermocouples with only One Cold-Junction Compensator

19

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