LM285-1.2, LM385-1.2, LM385B-1.2

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SLVS075J – APRIL 1989 – REVISED JANUARY 2015

7.5 Electrical Characteristics

over operating free-air temperature range (unless otherwise noted)

LM285-1.2

LM385-1.2

LM385B-1.2

PARAMETER

TEST CONDITIONS

(1)

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

Reference voltage

(2)

25°C

1.223

1.235

1.247

1.21

1.235

1.26

1.223

1.235

1.247

V

Average temperature

Full

ppm/°

coefficient of reference

(2)

±20

±20

±20

Range

C

25°C

1

1

1

(2)

Full

1.5

1.5

1.5

Range

Change in reference

mV

voltage with current

25°C

12

20

20

Full

30

30

30

Range

Long-term change in

ppm/k

25°C

±20

±20

±20

reference voltage

hr

Minimum reference

Full

8

10

8

15

8

15

µA

current

Range

25°C

0.2

0.6

0.4

1

0.4

1

Reference impedance

Ω

Full

1.5

1.5

1.5

Range

Broadband noise

25°C

60

60

60

µV

voltage

10 kHz

(1)

Full range is

−40°C to 85°C for the LM285-1.2 and 0°C to 70°C for the LM385-1.2 and LM385B-1.2.

(2)

I(min) = 10

μA for the LM285-1.2 and 15 μA for the LM385-1.2 and LM385B-1.2

(3)

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

temperature range.

7.6 Typical Characteristics

Figure 1. Reverse Current vs Reverse Voltage

Figure 2. Reference Voltage Change vs Reverse Current

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