SPX2431 datasheet(4/9 Pages) SIPEX

Part #	SPX2431

Description	Precision Adjustable Shunt Regulator

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Manufacturer	SIPEX [Sipex Corporation]

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Date: 1/19/05

SPX2431 Precision Adjustable Shunt Regulator

-2

-1

0

1

2

3

150

125

100

75

50

25

0

-25

-50

-75

-100

VKA Cathode Voltage (V)

VKA = VREF

0°C to 105°C

-60

-30

0

30

60

90

120

2.53

2.52

2.51

2.50

2.49

2.48

2.47

2.46

2.45

TA Ambient Temperature (°C)

VKA = VREF

IK = 10mA

TYPICAL PERFORMANCE CHARACTERISTICS

Figure 5. High Current Operating Characteristics

Figure 6. Reference Voltage VS Ambient Tempetature

-1.0

0

1.0

2.0

3.0

900

800

700

600

500

400

300

200

100

0

-100

-200

VKA Cathode Voltage (V)

VKA = VREF

0° to 105°C

105°C

25°C

-0°C

-60

-30

0

30

60

90

120

3.0

2.5

2.0

1.5

1.0

0.5

0

TA Ambient Temperature (°C)

R1 = 10kΩ

R2 = ∞

IK = 10mA

Figure 7. Low Current Operating Characteristics

10

100

1K

10K

100K

70

60

50

40

30

20

10

0

f Frequency (Hz)

VKA = VREF

IK = 10mA

TA = 25°C

0

369

12 15

18

21

24

27 30

0

-10

-20

-30

-40

-50

VKA Cathode Voltage (V)

0°C

25°C

75°C

125°C

IKA = 10mA

Figure 9. Reference Voltage Line Regulation VS

Cathode Voltage and T

AMBIENT

Figure 10. Noise Voltage VS Frequency

Figure 8. Reference Input Current VS Ambient

Temperature

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