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PDF ( 数据手册 , 数据表 ) ADR363

零件编号 ADR363
描述 (ADR360 - ADR366) Low Noise Voltage References
制造商 Analog Devices
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ADR363 数据手册, 描述, 功能
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Low Power, Low Noise Voltage References
with Sink/Source Capability
ADR360/ADR361/ADR363/ADR364/ADR365/ADR366
FEATURES
Compact TSOT-23-5 packages
Low temperature coefficient
B grade: 9 ppm/°C
A grade: 25 ppm/°C
Initial accuracy
B grade: ±3 mV maximum
A grade: ±6 mV maximum
Ultralow output noise: 6.8 μV p-p (0.1 Hz to 10 Hz)
Low dropout: 300 mV
Low supply current: 190 μA maximum
No external capacitor required
Output current: +5 mA/−1 mA
Wide temperature range: −40°C to +125°C
APPLICATIONS
Battery-powered instrumentations
Portable medical instrumentations
Data acquisition systems
Industrial process controls
Automotive
GENERAL DESCRIPTION
The ADR360/ADR361/ADR363/ADR364/ADR365/ADR366
are precision 2.048 V, 2.5 V, 3.0 V, 4.096 V, 5.0 V, and 3.3 V band
gap voltage references that feature low power, high precision in
tiny footprints. Using Analog Devices’ patented temperature
drift curvature correction techniques, the ADR36x references
achieve a low temperature drift of 9 ppm/°C in the TSOT
package.
The ADR36x family of micropower, low dropout voltage
references provides a stable output voltage from a minimum
supply of 300 mV above the output. Their advanced design
eliminates the need for external capacitors, which further
reduces board space and system cost. The combination of low
power operation, small size, and ease of use makes the ADR36x
precision voltage references ideally suited for battery-operated
applications.
PIN CONFIGURATION
Table 1.
Model
ADR360B
ADR360A
ADR361B
ADR361A
ADR363B
ADR363A
ADR364B
ADR364A
ADR365B
ADR365A
ADR366B
ADR366A
NC 1 ADR36x 5 TRIM
GND 2 TOP VIEW
(Not to Scale)
VIN 3
4 VOUT
NC = NO CONNECT
Figure 1. 5-Lead TSOT (UJ Suffix)
VOUT
(V)1
2.048
2.048
2.5
2.5
3.0
3.0
4.096
4.096
5.0
5.0
3.3
3.3
Temperature
Coefficient (ppm/°C)
9
25
9
25
9
25
9
25
9
25
9
25
Accuracy (mV)
±3
±6
±3
±6
±3
±6
±4
±8
±4
±8
±4
±8
1 Contact Analog Devices, Inc. for other voltage options.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2006 Analog Devices, Inc. All rights reserved.







ADR363 pdf, 数据表
ADR360/ADR361/ADR363/ADR364/ADR365/ADR366
ADR366—SPECIFICATIONS
Electrical Characteristics (VIN = 3.6 V to 15 V, TA = 25°C, unless otherwise noted.)
Table 7.
Parameter
OUTPUT VOLTAGE
INITIAL ACCURACY
TEMPERATURE COEFFICIENT
SUPPLY VOLTAGE HEADROOM
LINE REGULATION
LOAD REGULATION
QUIESCENT CURRENT
VOLTAGE NOISE
TURN-ON SETTLING TIME
LONG-TERM STABILITY1
OUTPUT VOLTAGE HYSTERESIS
RIPPLE REJECTION RATIO
SHORT CIRCUIT TO GND
Symbol
VO
VOERR
TCVO
VIN − VO
∆VO/∆VIN
∆VO/∆ILOAD
IIN
eN p-p
tR
∆VO
∆VO_HYS
RRR
ISC
Conditions
A Grade
B Grade
A Grade
A Grade
B Grade
B Grade
A Grade, −40°C < TA < +125°C
B Grade, −40°C < TA < +125°C
VIN = 3.6 V to 15 V, −40°C < TA < +125°C
ILOAD = 0 mA to 5 mA, −40°C < TA < +125°C, VIN = 4.2 V
ILOAD = −1 mA to 0 mA, −40°C < TA < +125°C, VIN = 4.2 V
−40°C < TA < +125°C
0.1 Hz to 10 Hz
1,000 hours
fIN = 60 kHz
VIN = 5 V
VIN = 15 V
Min
3.292
3.296
300
Typ
3.300
3.300
150
9.3
25
50
100
70
25
30
Max
3.308
3.304
8
0.25
4
0.125
25
9
0.165
0.6
1.35
190
Unit
V
V
mV
%
mV
%
ppm/°C
ppm/°C
mV
mV/V
mV/mA
mV/mA
μA
μV p-p
μs
ppm
ppm
dB
mA
mA
1 The long-term stability specification is noncumulative. The drift subsequent 1,000 hour periods are significantly lower than in the first 1,000 hour period.
Rev. A | Page 8 of 20







ADR363 equivalent, schematic
ADR360/ADR361/ADR363/ADR364/ADR365/ADR366
THEORY OF OPERATION
Band gap references are the high performance solution for low
supply voltage and low power voltage reference applications,
and the ADR36x family is no exception. The uniqueness of
these products lies in their architecture. The ideal zero TC band
gap voltage is referenced to the output not to ground (see
Figure 32). Therefore, if noise exists on the ground line, it is
greatly attenuated on VOUT. The band gap cell consists of the
PNP pair Q53 and Q52 running at unequal current densities.
The difference in VBE results in a voltage with a positive TC,
which is amplified by a ratio of
2× R59
R54
This PTAT voltage, combined with the VBEs of Q53 and Q52,
produces the stable band gap voltage.
Reduction in the band gap curvature is performed by the ratio
of Resistor R44 and Resistor R59, one of which is linearly
temperature dependent. Precision laser trimming and other
patented circuit techniques are used to further enhance the drift
performance.
Q2 Q1
VOUT (FORCE)
R59 R44 R100
R54 R58
Q61 Q60
R53
Q53
Q52
VOUT (SENSE)
R49
62k
R50
30k
TRIM
R101
R60 R61
R48
Figure 32. Simplified Schematic
DEVICE POWER DISSIPATION CONSIDERATIONS
The ADR36x family is capable of delivering load currents to
5 mA with an input voltage ranging from 2.348 V (ADR360
only) to 18 V. When this device is used in applications with
large input voltages, care should be taken to avoid exceeding the
specified maximum power dissipation or junction temperature
because it could result in premature device failure. Use the
following formula to calculate a device’s maximum junction
temperature or dissipation:
PD
=
TJ TA
θJA
In this equation, TJ and TA are, respectively, the junction and
ambient temperatures, PD is the device power dissipation, and
θJA is the device package thermal resistance.
INPUT CAPACITOR
Input capacitors are not required on the ADR36x. There is no
limit for the value of the capacitor used on the input, but a 1 μF
to 10 μF capacitor on the input improves transient response in
applications where the supply suddenly changes. An additional
0.1 μF capacitor in parallel also helps reduce noise from the supply.
OUTPUT CAPACITOR
The ADR36x does not require output capacitors for stability
under any load condition. An output capacitor, typically 0.1 μF,
filters out any low level noise voltage and does not affect the
operation of the part. On the other hand, the load transient
response can improve with an additional 1 μF to 10 μF output
capacitor in parallel. A capacitor here acts as a source of stored
energy for a sudden increase in load current. The only
parameter that degrades by adding an output capacitor is the
turn-on time. The degradation depends on the size of the
capacitor chosen.
Rev. A | Page 16 of 20










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