MAT01AH View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

MAT01AH

Matched Monolithic Dual Transistor

Analog Devices 

MAT01

TYPICAL APPLICATIONS

R1

1.5kΩ

1mA

Q1

VREF

Q2

VREF ≈ 7.0V

TCVREF ≈ 100ppm/°C

RO ≈ 40Ω

NOTES

1. R1 MAY BE ADJUSTED TO MINIMIZE TCVREF.

INCREASING R1 CAUSES A POSITIVE CHANGE IN TCVREF.

2. hFE OF Q1 IS REDUCED BY OPERATION OF BREAKDOWN MODE.

Figure 13. Precision Reference

SENSING PAIR

MAT01H

UP TO

100 FEET

CABLE

+15V

–15V

DIFFERENTIAL

EO = 10mV/K

AMPLIFIER AND

CURRENT SOURCES

°C

K

EO

–55°C = 218K = 2.18V

+25°C = 298K = 2.98V

+125°C = 398K = 3.98V

3-DIGIT DPM

0V TO +10V

FULL SCALE

Figure 14. Basic Digital Thermometer Readout in Degrees Kelvin (K)

SENSING PAIR

MAT01H

UP TO

100FT.

CABLE

+15V

–15V

DIFFERENTIAL

EO = 10mV/K

AMPLIFIER AND

CURRENT SOURCES

2.73V

+

POWER SUPPLY –

HIGH

LOW

2 1/2 DIGIT

DPM BIPOLAR

DIFFERENTIAL

INPUTS

METER DISPLAYS

EO –2.73V

–55°C = –0.55V

+25°C = +0.25V

+125°C = +1.25V

Figure 15. Digital Thermometer with Readout in °C

Data Sheet

Rev. C | Page 10 of 12

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