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REF19x Series
REF191–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
–2–
REV. D
Parameter
INITIAL ACCURACY
1
“E” Grade
“F” Grade
“G” Grade
LINE REGULATION
2
“E” Grade
“F & G” Grades
LOAD REGULATION
2
“E” Grade
“F & G” Grades
DROPOUT VOLTAGE
Symbol
Condition
Min
Typ
Max
Units
V
O
I
OUT
= 0 mA
2.046
2.043
2.038
2.048
2.050
2.053
2.058
V
V
V
V
O
/
V
IN
3.0 V
≤
V
S
≤
15 V, I
OUT
= 0 mA
2
4
4
8
ppm/V
ppm/V
V
O
/
V
LOAD
V
S
= 5.0 V, 0
≤
I
OUT
≤
30 mA
4
6
10
15
0.95
1.25
1.55
ppm/mA
ppm/mA
V
V
V
mV
μ
V p-p
V
S
– V
O
V
S
= 3.15 V, I
LOAD
= 2 mA
V
S
= 3.3 V, I
LOAD
= 10 mA
V
S
= 3.6 V, I
LOAD
= 30 mA
1000 Hours @ +125
°
C
0.1 Hz to 10 Hz
LONG-TERM STABILITY
3
NOISE VOLTAGE
V
O
e
N
1.2
20
NOTES
1
Initial accuracy includes temperature hysteresis effect.
2
Line and load regulation specifications include the effect of self-heating.
3
Long-term drift is guaranteed by 1000 hours life test performed on three independent wafer lots at +125
°
C, with an LTPD of 1.3.
Specifications subject to change without notice.
ELECTRICAL CHARACTERISTICS
Parameter
TEMPERATURE COEFFICIENT
1, 2
“E” Grade
“F” Grade
“G” Grade
3
LINE REGULATION
4
“E” Grade
“F & G” Grades
LOAD REGULATION
4
“E” Grade
“F & G” Grades
DROPOUT VOLTAGE
Symbol
Condition
Min
Typ
Max
Units
TCV
O
/
°
C
I
OUT
= 0 mA
2
5
10
5
10
25
ppm/
°
C
ppm/
°
C
ppm/
°
C
V
O
/
V
IN
3.0 V
≤
V
S
≤
15 V, I
OUT
= 0 mA
5
10
10
20
ppm/V
ppm/V
V
O
/
V
LOAD
V
S
= 5.0 V, 0
≤
I
OUT
≤
25 mA
5
10
15
20
0.95
1.25
1.55
ppm/mA
ppm/mA
V
V
V
V
S
– V
O
V
S
= 3.15 V, I
LOAD
= 2 mA
V
S
= 3.3 V, I
LOAD
= 10 mA
V
S
= 3.6 V, I
LOAD
= 25 mA
SLEEP PIN
Logic High Input Voltage
Logic High Input Current
Logic Low Input Voltage
Logic Low Input Current
V
H
I
H
V
L
I
L
2.4
V
μ
A
V
μ
A
μ
A
μ
A
–8
0.8
–8
SUPPLY CURRENT
Sleep Mode
No Load
No Load
45
15
NOTES
1
For proper operation, a 1
μ
F capacitor is required between the output pin and the GND pin of the device.
2
TCV
O
is defined as the ratio of output change with temperature variation to the specified temperature range expressed in ppm/
°
C.
TCV
= (
V max–V min
)/V
O
(
T
MAX
–T
MIN
).
3
Guaranteed by characterization.
4
Line and load regulation specifications include the effect of self-heating.
Specifications subject to change without notice.
(@ V
S
= 3.3 V, T
A
= +25
8
C unless otherwise noted)
(@ V
S
= 3.3 V, –40
8
C
≤
T
A
≤
+85
8
C unless otherwise noted)