REF191 View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

REF191

Precision Micropower, Low Dropout Voltage References

Analog Devices 

REF19x Series

ELECTRICAL CHARACTERISTICS—REF198 @ −40°C ≤ TA ≤ +125°C

@ VS = 5.0 V, −40°C ≤ TA ≤ +125°C, unless otherwise noted.

Table 22.

Parameter

TEMPERATURE COEFFICIENT1, 2

Mnemonic

Condition

E Grade

F Grade

G Grade3

LINE REGULATION4

E Grade

F and G Grades

LOAD REGULATION4

E Grade

F and G Grades

TCVO/°C

IOUT = 0 mA

ΔVO/ΔVIN

ΔVO/ΔVLOAD

4.5 V ≤ VS ≤ 15 V, IOUT = 0 mA

VS = 5.6 V, 0 mA ≤ IOUT ≤ 20 mA

DROPOUT VOLTAGE

VS − VO

VS = 4.7 V, ILOAD = 10 mA

VS = 5.6 V, ILOAD = 20 mA

Min Typ

2

5

10

5

10

5

10

1 For proper operation, a 1 μF capacitor is required between the output pin and the GND pin of the device.

2 TCVO is defined as the ratio of output change with temperature variation to the specified temperature range expressed in ppm/°C.

TCVO = (VMAX − VMIN)/VO(TMAX − TMIN)

3 Guaranteed by characterization.

4 Line and load regulation specifications include the effect of self-heating.

Max

0.60

1.50

Unit

ppm/°C

ppm/°C

ppm/°C

ppm/V

ppm/V

ppm/mA

ppm/mA

V

V

WAFER TEST LIMITS

For proper operation, a 1 μF capacitor is required between the output pins and the GND pin of the REF19x. Electrical tests and wafer

probe to the limits are shown in

Table 23. Due to variations in assembly methods and normal yield loss, yield after packaging is not guaranteed for standard product dice.

Consult factory to negotiate specifications based on dice lot qualifications through sample lot assembly and testing.

@ ILOAD = 0 mA, TA = 25°C, unless otherwise noted.

Table 23.

Parameter

Mnemonic

Condition

INITIAL ACCURACY

REF191

VO

REF192

REF193

REF194

REF195

REF196

REF198

LINE REGULATION

ΔVO/ΔVIN

(VO + 0.5 V) < VIN < 15 V, IOUT = 0 mA

LOAD REGULATION

ΔVO/ΔILOAD

0 mA < ILOAD < 30 mA, VIN = (VO + 1.3 V)

DROPOUT VOLTAGE

VO − V+

ILOAD = 10 mA

ILOAD = 30 mA

SLEEP MODE INPUT

Logic Input High

VIH

Logic Input Low

VIL

SUPPLY CURRENT

VIN = 15 V

No load

Sleep Mode

No load

Limit

2.043/2.053

2.495/2.505

2.990/3.010

4.495/4.505

4.995/5.005

3.290/3.310

4.091/4.101

15

15

1.25

1.55

2.4

0.8

45

15

Unit

V

V

V

V

V

V

V

ppm/V

ppm/mA

V

V

V

V

μA

μA

Rev. I | Page 14 of 28

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