REF194GP datasheet(11/28 Pages) AD

Part #	REF194GP

Description	Precision Micropower, Low Dropout Voltage References

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REF19x Series

Rev. I | Page 11 of 28

ELECTRICAL CHARACTERISTICS—REF195 @ −40°C ≤ TA ≤ +125°C

@ VS = 5.20 V, −40°C ≤ TA ≤ +125°C, unless otherwise noted.

Table 16.

Parameter

Mnemonic

Condition

Min

Typ

Max

Unit

TEMPERATURE COEFFICIENT1, 2

E Grade

TCVO/°C

IOUT = 0 mA

2

ppm/°C

F Grade

5

ppm/°C

G Grade3

10

ppm/°C

LINE REGULATION4

E Grade

ΔVO/ΔVIN

5.20 V ≤ VS ≤ 15 V, IOUT = 0 mA

5

ppm/V

F and G Grades

10

ppm/V

LOAD REGULATION4

E Grade

ΔVO/ΔVLOAD

VS = 6.45 V, 0 mA ≤ IOUT ≤ 20 mA

5

ppm/mA

F and G Grades

10

ppm/mA

DROPOUT VOLTAGE

VS

− VO

VS = 5.60 V, ILOAD = 10 mA

0.60

V

VS = 6.45 V, ILOAD = 20 mA

1.45

V

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.

ELECTRICAL CHARACTERISTICS—REF196 @ TA = 25°C

@ VS = 3.5 V, TA = 25°C, unless otherwise noted.

Table 17.

Parameter

Mnemonic

Condition

Min

Typ

Max

Unit

INITIAL ACCURACY1

G Grade

VO

IOUT = 0 mA

3.290

3.3

3.310

V

LINE REGULATION2

G Grade

ΔVO/ΔVIN

3.50 V ≤ VS ≤ 15 V, IOUT = 0 mA

4

8

ppm/V

LOAD REGULATION2

G Grade

ΔVO/ΔVLOAD

VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA

6

15

ppm/mA

DROPOUT VOLTAGE

VS − VO

VS = 4.1 V, ILOAD = 10 mA

0.80

V

VS = 4.3 V, ILOAD = 30 mA

1.00

V

LONG-TERM STABILITY3

DVO

1000 hours @ 125°C

1.2

mV

NOISE VOLTAGE

eN

0.1 Hz to 10 Hz

33

μV p-p

1 Initial accuracy includes temperature hysteresis effect.

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

3 Long-term stability specification is noncumulative. The drift in subsequent 1000-hour periods is significantly lower than in the first 1000-hour period.

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