REF191 Просмотр технического описания (PDF) - Analog Devices
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REF191 Datasheet PDF : 28 Pages
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REF19x Series
ELECTRICAL CHARACTERISTICS—REF191 @ −40°C ≤ TA ≤+125°C
@ VS = 3.3 V, −40°C ≤ TA ≤ +125°C, unless otherwise noted.
Table 4.
Parameter
Mnemonic
Condition
TEMPERATURE COEFFICIENT1, 2
E Grade
TCVO/°C
IOUT = 0 mA
F Grade
G Grade3
LINE REGULATION4
E Grade
ΔVO/ΔVIN
3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA
F and G Grades
LOAD REGULATION4
E Grade
ΔVO/ΔVLOAD
VS = 5.0 V, 0 mA ≤ IOUT ≤ 20 mA
F and G Grades
DROPOUT VOLTAGE
VS − VO
VS = 3.3 V, ILOAD = 10 mA
VS = 3.6 V, ILOAD = 20 mA
Min Typ
2
5
10
10
20
10
20
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 Unit
ppm/°C
ppm/°C
ppm/°C
ppm/V
ppm/V
ppm/mA
ppm/mA
1.25 V
1.55 V
ELECTRICAL CHARACTERISTICS—REF192 @ TA = 25°C
@ VS = 3.3 V, TA = 25°C, unless otherwise noted.
Table 5.
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
ΔVO/ΔVLOAD
3.0 V ≤ VS ≤ 15 V, IOUT = 0 mA
VS = 5.0 V, 0 mA ≤ IOUT ≤ 30 mA
DROPOUT VOLTAGE
LONG-TERM STABILITY3
NOISE VOLTAGE
VS − VO
DVO
eN
VS = 3.5 V, ILOAD = 10 mA
VS = 3.9 V, ILOAD = 30 mA
1000 hours @ 125°C
0.1 Hz to 10 Hz
Min
Typ
Max Unit
2.498 2.500 2.502 V
2.495
2.505 V
2.490
2.510 V
2
4
ppm/V
4
8
ppm/V
4
10
ppm/mA
6
15
ppm/mA
1.00 V
1.40 V
1.2
mV
25
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 5 of 28
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