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Recommended Operating Conditions

Electrical Characteristics

LT1009

2.5-V INTEGRATED REFERENCE CIRCUIT

SLVS013L – MAY 1987 – REVISED SEPTEMBER 2005

MIN

MAX

UNIT

LT1009C

0

70

Operating free-air temperature range

°C

LT1009I

–40

85

at specified free-air temperature

LT1009C

LT1009I

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

D package

2.49

2.5

2.51

2.49

2.5

2.51

25

°C

LP package

2.495

2.5

2.505

2.495

2.5

2.505

Reference voltage

V

D package

2.485

2.515

2.475

2.525

Full range

LP package

2.491

2.509

2.48

2.52

Forward voltage

25

°C

0.4

1

0.4

1

V

125

125

Adjustment range

25

°C

mV

45

45

Change in

D package

5

15

∆V

Z(temp)

reference voltage

Full range

mV

LP package

4

15

with temperature

Average temperature

0

°C to 70°C

15

25

ppm/

α

VZ

coefficient of

°C

–40

°C to 85°C

20

35

25

°C

2.6

10

2.6

6

Change in reference

∆V

Z

mV

voltage with current

Full range

12

10

Long-term change in

ppm/

∆V

25

°C

20

20

reference voltage

khr

25

°C

0.3

1

0.3

1

Ω

Full range

1.4

1.4

(1)

Full range is 0

°C to 70°C for the LT1009C and –40°C to 85°C for the LT1009I.

(2)

The average temperature coefficient of reference voltage is defined as the total change in reference voltage divided by the specified

temperature range.

3