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
Min
Typ
Max
Unit
E Grade
F Grade
G Grade
VO
IOUT = 0 mA
2.046
2.043
2.038
2.048
2.050
2.053
2.058
V
V
V
LINE REGULATION2
E Grade
ΔVO/ΔVIN
3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA
VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA
2
4
4
8
ppm/V
ppm/V
F and G Grades
LOAD REGULATION2
E Grade
F and G Grades
DROPOUT VOLTAGE
ΔVO/ΔVLOAD
VS − VO
4
6
10
15
ppm/mA
ppm/mA
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
0.95
1.25
1.55
V
V
V
LONG-TERM STABILITY3
NOISE VOLTAGE
DVO
eN
1.2
20
mV
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
ADI [ ADI ]
