REF191 View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
REF191 Datasheet PDF : 28 Pages
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REF19x Series
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS—REF191 @ TA = 25°C
@ VS = 3.3 V, TA = 25°C, unless otherwise noted.
Table 2.
Parameter
INITIAL ACCURACY1
Mnemonic
Condition
E Grade
F Grade
G Grade
LINE REGULATION2
E Grade
F and G Grades
LOAD REGULATION2
E Grade
F and G Grades
VO
IOUT = 0 mA
ΔVO/ΔVIN
3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA
ΔVO/ΔVLOAD
VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA
DROPOUT VOLTAGE
LONG-TERM STABILITY3
NOISE VOLTAGE
VS − VO
DVO
eN
VS = 3.15 V, ILOAD = 2 mA
VS = 3.3 V, ILOAD = 10 mA
VS = 3.6 V, ILOAD = 30 mA
1000 hours @ 125°C
0.1 Hz to 10 Hz
Min
Typ
Max Unit
2.046 2.048 2.050 V
2.043
2.053 V
2.038
2.058 V
2
4
ppm/V
4
8
ppm/V
4
10
ppm/mA
6
15
ppm/mA
0.95
V
1.25
V
1.55
V
1.2
mV
20
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.
Rev. I | Page 3 of 28
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