REV. E

–2–

REF191–SPECIFICATIONS

REF19x Series

ELECTRICAL CHARACTERISTICS

Parameter

Symbol

Condition

Min

Typ

Max

Unit

INITIAL ACCURACY

1

E Grade

2.046

2.048

2.050

V

F Grade

2.043

2.053

V

G Grade

2.038

2.058

V

LINE REGULATION

2

E Grade

3.0 V

2

4

ppm/V

F and G Grades

48

ppm/V

LOAD REGULATION

2

E Grade

≤ I

OUT

≤ 30 mA

4

10

ppm/mA

F and G Grades

615

ppm/mA

DROPOUT VOLTAGE

0.95

V

1.25

V

1.55

V

LONG-TERM STABILITY

3

1000 Hours @ 125

°C

1.2

mV

NOISE VOLTAGE

0.1 Hz to 10 Hz

20

µV p-p

NOTES

°C, with an LTPD of 1.3.

Specifications subject to change without notice.

ELECTRICAL CHARACTERISTICS

Parameter

Symbol

Condition

Min

Typ

Max

Unit

TEMPERATURE COEFFICIENT

1, 2

E” Grade

2

5

ppm/

°C

F Grade

510

ppm/

°C

G Grade

3

10

25

ppm/

°C

LINE REGULATION

4

E Grade

3.0 V

≤ V

S

≤ 15 V, I

5

10

ppm/V

F and G Grades

10

20

ppm/V

LOAD REGULATION

4

E Grade

≤ I

OUT

≤ 25 C

5

15

ppm/mA

F and G Grades

10

20

ppm/mA

DROPOUT VOLTAGE

0.95

V

1.25

V

1.55

V

SLEEP PIN

Logic High Input Voltage

2.4

V

Logic High Input Current

–8

µA

Logic Low Input Voltage

0.8

V

Logic Low Input Current

–8

µA

SUPPLY CURRENT

No Load

45

µA

Sleep Mode

No Load

15

µA

NOTES

µF capacitor is required between the output pin and the GND pin of the device.

°C.

Specifications subject to change without notice.