SPX1432MSLASHTR datasheet(3/7 Pages) SIPEX

3 / 7 page

Date: 5/6/04

SPX1432 1.24V Precision Adjustable Shunt Regulator

5000

ppm

0.5

27ppm/°C

0.0027% / °C

0.0033mV /°C

015

3045

105

-5

∆T

∆VREF

Junction Temperature (°C)

∆VREF(mV)

∆TA

(∆

VREF at 25°C

)

∆TA

∆VREF

x 100

• TC in % / °C =

• TC in mV / °C =

(∆

VREF at 25°C

)

∆TA

∆VREF

x 106

• TC in ppm / °C =

CALCULATION AVERAGE TEMPERATURE COEFICIENT (TC)

Figure 1. V

REF VS Temperature.

TEST CIRCUITS

IREF

VKA = VREF

VIN

IREF

VKA

VIN

(VREF)

VKA

VIN

IK (OFF)

Figure 2. Test Circuit for V

KA = VREF

Figure 3. Test Circuit for V

KA > VREF

Figure 4. Test Circuit for I

KOFF

-2

-1

1.24

15.0

12.5

10.0

7.5

5.0

2.5

-2.5

-5.0

-7.5

-10.0

VKA Cathode Voltage (V)

VKA = VREF

25°C

TYPICAL PERFORMANCE CHARACTERISTICS

High Current Operating Characteristics.

Reference Input Current VS Ambient Temperature.

120

160

200

-60

-40

-20

100 120

TA-Ambient Temperature (°C)

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