TL1431

PRECISION PROGRAMMABLE REFERENCE

SLVS062F – DECEMBER 1991 – REVISED JANUARY 2000

9

POST OFFICE BOX 655303

Figure 4

2.5

2.49

2.48

– 50

– 25

0

25

50

2.51

REFERENCE VOLTAGE

vs

FREE-AIR TEMPERATURE

2.52

75

100

125

VI(ref) = VKA

IKA = 10 mA

TA – Free-Air Temperature – °C

Figure 5

REFERENCE CURRENT

vs

FREE-AIR TEMPERATURE

– 50

– 25

0

25

50

75

100

125

0

0.5

1

1.5

2

2.5

TA – Free-Air Temperature – °C

IKA = 10 mA

R1 = 10 k

Ω

R2 =

∞

Figure 6

0

– 50

– 100

– 150

– 3

– 2

– 1

50

100

CATHODE CURRENT

vs

CATHODE VOLTAGE

150

012

3

VKA – Cathode Voltage – V

VKA = VI(ref)

TA = 25°C

Figure 7

200

0

– 200

–1

0

1

2

3

4

400

600

CATHODE CURRENT

vs

CATHODE VOLTAGE

800

VKA – Cathode Voltage – V

VKA = VI(ref)

TA = 25°C

–2

† Data at high and low temperatures are applicable only within the recommended operating free-air temperature ranges of the various devices.