SPX431 datasheet(3/8 Pages) SIPEX

3 / 8 page

Rev. 10/30/00

SPX431

ELECTRICAL CHARACTERISTICS at 25°C IK @ 10mA VK = VREF, unless otherwise specified.

Parameter

Symbol

Test Conditions

Test Circuit

SPX431

Unit

Min

Typ

Max

Reference Voltage

VREF

TA = 25

°C

Over Temp.

2.490

2.469

2.503

2.515

2.536

∆VREF with Temp.∗

0.07

0.20

mV/

°C

Ratio of Change in VREF to

Cathode Voltage

∆ VREF

∆VK

VREF to 10V

10V to 36V

-2.7

-2

-1.0

-0.4

0.3

mV/V

Reference Input Current

IREF

0.7

µA

IREF Temp Deviation

∆IREF

Over Temp.

0.4

1.2

µA

Min IK for Regulation

IK(MIN)

0.4

Off State Leakage

IK(OFF)

VREF = 0V,

VKA = 36V

0.04

250

Dynamic Output Impedance

ZKA

0.15

0.5

Ω

TC = Test Circuit

Calculating Average Temperature Coefficient (TC)

TEST CIRCUITS

TC in mV/°C =

∆V

REF (mV)

∆T

TC in %/°C =

REF at 25°C

∆T

∆V

REF

) x 100

TC in ppm/°C =

REF at 25°C

∆T

∆V

REF

) x 106

5000

∆Τ

-55

0.06 mV/°C

∆V

REF

-20

-10

0.5

Temperature (°C)

0.002 %/°C

24 ppm/°C

-25

75 100 125

REF

KA = VREF

REF)

Figure 1b. Test Circuit 2

Figure 1a. Test Circuit 1

K (OFF)

Figure 1c. Test Circuit 3

REF

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