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ADR391 View Datasheet(PDF) - Analog Devices

Part NameADR391 ADI
Analog Devices ADI
DescriptionMicropower, Low Noise Precision Voltage References with Shutdown
ADR391 Datasheet PDF : 20 Pages
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ADR390/ADR391/ADR392/ADR395
ADR391 SPECIFICATIONS
Electrical characteristics, VIN = 2.8 V to 15 V, TA = 25°C, unless otherwise noted.
Table 3.
Parameter
OUTPUT VOLTAGE
INITIAL ACCURACY
TEMPERATURE COEFFICIENT
Symbol
VO
VO
VOERR
VOERR
VOERR
VOERR
TCVO
Conditions
A grade
B grade
A grade
A grade
B grade
B grade
A grade, −40°C < TA < +125°C
Min Typ Max Unit
2.494 2.5 2.506 V
2.496 2.5 2.504 V
6
mV
0.24 %
4
mV
0.16 %
25 ppm/°C
B grade, −40°C < TA < +125°C
9
ppm/°C
SUPPLY VOLTAGE HEADROOM
VIN − VO
300
mV
LINE REGULATION
∆VO/∆VIN VIN = 2.8 V to 15 V, −40°C < TA < +125°C
10 25 ppm/V
LOAD REGULATION
∆VO/∆ILOAD ILOAD = 0 mA to 5 mA, −40°C < TA < +85°C, VIN = 3 V
60 ppm/mA
ILOAD = 0 mA to 5 mA, −40°C < TA < +125°C, VIN = 3 V
140 ppm/mA
QUIESCENT CURRENT
IIN
No load
120 µA
−40°C < TA < +125°C
140 µA
VOLTAGE NOISE
enp-p
0.1 Hz to 10 Hz
5
µV p-p
TURN-ON SETTLING TIME
tR
20
µs
LONG-TERM STABILITY1
∆VO
1000 hours
50
ppm
OUTPUT VOLTAGE HYSTERESIS
∆VO_HYS
100
ppm
RIPPLE REJECTION RATIO
RRR
fIN = 60 kHz
80
dB
SHORT CIRCUIT TO GND
ISC
VIN = 5 V
25
mA
VIN = 15 V
30
mA
SHUTDOWN PIN
Shutdown Supply Current
ISHDN
3
µA
Shutdown Logic Input Current ILOGIC
500 nA
Shutdown Logic Low
VINL
0.8 V
Shutdown Logic High
VINH
2.4
V
1 The long-term stability specification is noncumulative. The drift of subsequent 1000 hour periods is significantly lower than in the first 1000 hour period.
Rev. F | Page 4 of 20
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GENERAL DESCRIPTION
The ADR390, ADR391, ADR392, and ADR395 are precision 2.048 V, 2.5 V, 4.096 V, and 5 V band gap voltage references, respectively, featuring low power and high precision in a tiny footprint. Using ADI’s patented temperature drift curvature correction techniques, the ADR39x references achieve a low 9 ppm/°C of temperature drift in the TSOT package.

FEATURES
Compact TSOT-23-5 packages
Low temperature coefficient
   B grade: 9 ppm/°C
   A grade: 25 ppm/°C
Initial accuracy
   B grade: ±4 mV maximum
   A grade: ±6 mV maximum
Ultralow output noise: 5 µV p-p (0.1 Hz to 10 Hz)
Low dropout: 300 mV
Low supply current
   3 µA maximum in shutdown
   120 µA maximum in operation
No external capacitor required
Output current: 5 mA
Wide temperature range
    −40°C to + 125°C

 

APPLICATIONS
Battery-powered instrumentation
Portable medical instrumentation
Data acquisition systems
Industrial process controls
Automotive

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