AS1431DR4DB datasheet(3/8 Pages) ETC

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ASTEC Semiconductor

AS1431

Precision Adjustable Shunt Reference

Electrical Characteristics

Electrical Characteristics are guaranteed over full junction temperature range (Ð55 to 125¡C). Ambient temperature must be derated

based on power dissipation and package thermal characteristics. The conditions are: V

KA = VREF and IK = 10 mA unless otherwise stated.

Parameter

Symbol

Test Condition

Min.

Typ.

Max.

Unit

Circuit

Reference Voltage

REF

A = 25¡C

2.490

2.500

2.510

Over temp.

2.470

2.530

ÆV

REF with Temp*

0.06

0.16

mV/¡C

Ratio of Change in V

REF to

ÆV

REF

ÆV

K = 3 V to 36 V

Ð2

Ð1.1

mV/V

Cathode Voltage

Reference Input Current

REF

1 = 10 k ½; R2 = °

0.7

1.9

µA

REF Temp Deviation

ÆI

REF

Over temp.

0.4

1.2

µA

Min I

K for Regulation

K(min)

0.4

Off State Leakage

K(off)

REF = 0 V,

0.04

500

KA = 36 V

Dynamic Output Impedance

f ² 1 kHz

0.15

0.2

K = 1 to 100 mA

*Calculating Average Temperature Coefficient (TC)

–10

–20

0.5

5000

–55 –25

100

125

0.06 mV/

°C

0.002%/

°C

24 ppm/

°C

∆V

REF

∆T

Temperature (

°C)

• TC in mV/

°C =

• TC in %/

°C =

∆T

X 100

∆V

REF (mV)

REF at 25°C

∆V

REF

• TC in ppm/

°C =

∆T

X 106

REF at 25°C

∆V

REF

Average Temperature Coefficient

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