LT1389_15 datasheet(5/12 Pages) LINER

Part #	LT1389

Description	Nanopower Precision Shunt Voltage Reference

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Manufacturer	LINER [Linear Technology]

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5

LT1389

Reverse Characteristics

Reverse Voltage Change

vs Current

Dynamic Impedance vs Frequency

Forward Characteristics

Reverse Dynamic Impedance

0.1Hz to 10Hz Noise

200ms/DIV

IR = 0.8µA

COUT = 0.1µF

Response Time

0V

1ms/DIV

1389-1.25 G08

0V

Response Time

REVERSE VOLTAGE (V)

0

0.4

0.6

1.6

1389-1.25 G01

0.2

0

0.4

0.8

1.2

1.0

0.8

TA = –40°C TO 85°C

TEMPERATURE (

°C)

–40

1.5

20

1389-1.25 G02

0

–1.0

–20

0

40

–1.5

– 2.0

2.0

1.0

0.5

– 0.5

60

80

IR = 250µA

IR = 0.8µA

Temperature Drift

FREQUENCY (kHz)

0.1

1

10

100

0.1

1

10

1389-1.25 G05

0.01

IR = 0.8µA

COUT = 0µF

IR = 0.8µA

COUT = 0.047µF

IR = 10µA

COUT = 0.1µF

IR = 10µA

COUT = 0µF

TA = 25°C

TIME (SEC)

0

5

15

25

40

1389-1.25 G07

–5

–15

0

10

20

–10

–20

–25

10

20

30

50

70

60

IR = 0.8µA

1.25V TYPICAL PERFOR A CE CHARACTERISTICS

1.5V

1V

0.5V

5V

IR = 0.8µA

COUT = 0µF

1.5V

1V

0.5V

0V

5V

0V

1389-1.25 G09

FORWARD CURRENT (mA)

0.001

0.4

0.5

0.6

0.7

0.8

0.01

0.1

1

10

100

1389-1.25 G06

0.3

0.2

0.1

0

0.9

1.0

TA = 25°C

REVERSE CURRENT (mA)

0.001

0.1

10

1000

0.1

0.01

10

1

1389-1.25 G04

1

100

TA = 25°C

f = 25Hz

REVERSE CURRENT (mA)

0.4

0.8

1.2

0.001

0.1

10

1

1389-1.25 G03

0

0.6

1.0

0.2

0.01

25

°C

85

°C

–40

°C

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