ADR02 ,Ultra Compact Precision +5.0 V ReferenceFEATURES PIN CONFIGURATIONS Ultra compact SC70-5/TSOT-5 TEMP 1 5 TRIMLow temperature coefficient 3 ..
ADR02AR ,Ultracompact Precision10 V/5 V/2.5 V/3.0 V Voltage ReferencesSpecifications .3 Added ADR06 Universal Changes to Absolute Maximum Ratings Section ...4 Change to ..
ADR02BR ,Ultracompact Precision10 V/5 V/2.5 V/3.0 V Voltage Referencesapplications. Part Number Output Voltage ADR01 10.0 V With an external buffer and a simple resisto ..
ADR03 ,Ultra Compact Precision 2.5 V Voltage Referenceapplications. With an external buffer and a simple resistor network, the TEMP terminal can be u ..
ADR03AKSZ-REEL7 , Ultracompact, Precision 10.0 V/5.0 V/2.5 V/3.0 V Voltage References
ADR03AKSZ-REEL7 , Ultracompact, Precision 10.0 V/5.0 V/2.5 V/3.0 V Voltage References
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ADR02-ADR03
Ultra Compact Precision 10.0 V Voltage Reference
Ultracompact Precision
10 V/5 V/2.5 V Voltage References
FEATURES
Ultra compact SC70-5/TSOT-5
Low temperature coefficient 3 ppm/°C
Long term stability 50 ppm/1000 hr
Line regulation 30 ppm/V
Load regulation 50 ppm/mA
Low noise 25 µV p-p (0.1 Hz to 10 Hz)
Low hysteresis 70 ppm typical
Wide operating range
ADR01 12 V to 40 V
ADR02 7 V to 40 V
ADR03 4.5 V to 40 V
Quiescent current 1 mA max
High output current 10 mA
Wide temperature range –40°C to +125°C
Industry standard REF01/REF02/REF03 compatible1
APPLICATIONS
Precision data acquisition systems
High resolution converters
Industrial process control systems
Precision instruments
PCMCIA cards 1 ADR01, ADR02, and ADR03 are component-level compatible with REF01,
REF02, and REF03, respectively. No guarantees for system-level compatibility
are implied. SOIC-8 versions of ADR01/ADR02/ADR03 are pin-to-pin
compatible with SOIC-8 versions of REF01/REF02/REF03, respectively, with
the additional temperature monitoring function.
PIN CONFIGURATIONS Figure 1. 5-Lead SC-70/TSOT Surface Mount Packages
Figure 2. 8-Lead SOIC Surface Mount Package
GENERAL DESCRIPTION The ADR01, ADR02, and ADR03 are precision 10 V, 5 V, and
2.5 V band gap voltage references featuring high accuracy, high
stability, and low power, housed in tiny SC70-5 and TSOT-5
packages. SOIC-8 versions of ADR01, ADR02, and ADR03 are
available for industry standard REF01, REF02, and REF03 drop
in replacement.1 The small footprint and wide operating range
make them ideal for general-purpose and space constraint
applications.
With an external buffer and a simple resistor network, the
TEMP terminal can be used for temperature sensing and
approximation. A TRIM terminal is provided on the ADR01,
ADR02, and ADR03 for fine adjustment of the output voltage.
The ADR01, ADR02, and ADR03 are compact, low drift voltage
references that provide an extremely stable output voltage from
a wide supply voltage range. They are available in SC70-5,
TSOT-5, and SOIC-8 packages with A and B grade selection. All
parts are specified over the extended industrial (–40°C to
+125°C) temperature range.
Rev. B
TABLE OF CONTENTS Specifications.....................................................................................3
Absolute Maximum Ratings............................................................6
Parameter Definitions......................................................................7
Typical Performance Characteristics.............................................8
Theory of Operation......................................................................14
Introduction................................................................................14
Applying the ADR01/ADR02/ADR03.....................................14
Applications................................................................................15
Outline Dimensions.......................................................................18
Ordering Guide...............................................................................20
REVISION HISTORY Revision B
2/03—Data Sheet Changed from REV. A to REV. B.
Added ADR03.................................................................Universal
Added TSOT-5 (UJ) Package........................................Universal
Updated OUTLINE DIMENSIONS........................................18
Revision A
12/02—Data Sheet Changed from REV. 0 to REV. A.
Changes to Features.....................................................................1
Changes to GENERAL DESCRIPTION...................................1
Table I deleted...............................................................................1
Changes to ADR01 SPECIFICATIONS....................................2
Changes to ADR02 SPECIFICATIONS....................................3
Changes to ABSOLUTE MAXIMUM RATINGS...................4
Changes to ORDERING GUIDE...............................................4
Updated OUTLINE DIMENSIONS........................................12
SPECIFICATIONS
Table 1. ADR01—Electrical Characteristics (VIN = 12 V to 40 V, TA = 25°C, unless otherwise noted.) Table 2. ADR02—Electrical Characteristics (VIN = 7 V to 40 V, TA = 25°C, unless otherwise noted.) Table 3. ADR03—Electrical Characteristics (VIN = 4.5 V to 40 V, TA = 25°C, unless otherwise noted.) ABSOLUTE MAXIMUM RATINGS
Table 4. Absolute Maximum Ratings (at 25°C, unless
otherwise noted)
Table 5. Thermal Resistance 1 θJA is specified for the worst-case conditions, i.e., θJA is specified for device
soldered in circuit board for surface mount packages.
PARAMETER DEFINITIONS
TEMPERATURE COEFFICIENT The change of output voltage with respect to operating
temperature changes normalized by the output voltage at 25°C.
This parameter is expressed in ppm/°C and can be determined
by the following equation: etemperatur at )( etemperatur at )(25 at C)(25
where,)(C)(25()(C][ppm/22OOOOOTVTVVTVVTVTCV=°−×°=°
LINE REGULATION The change in output voltage due to a specified change in input
voltage. This parameter accounts for the effects of self-heating.
Line regulation is expressed in either percent per volt, parts-
per-million per volt, or microvolts per volt change in
input voltage.
LOAD REGULATION The change in output voltage due to a specified change in load
current. This parameter accounts for the effects of self-heating.
Load regulation is expressed in either microvolts per
milliampere, parts-per-million per milliampere, or ohms of dc
output resistance.
LONG TERM STABILITY Typical shift of output voltage at 25°C on a sample of parts
subjected to a test of 1,000 hours at 25°C: 25 at operation hours 1,000after C25 at )( time at C25 at )(
where,10)(()([ppm]()(Δ00°==−==OOOOOOtVtVtVVtV ΔVVtVV
THERMAL HYSTERISIS Defined as the change of output voltage after the device is
cycled through temperature from +25°C to –40°C to +125°C
and back to +25°C. This is a typical value from a sample of
parts put through such a cycle. 25 toback and C125 to C40– toC25 at cycle etemperaturafter C25 at 25 at C)(25
where,10C)(25(25[ppm]25(_+°+°+°==°°°=°TCOOOO
HYSOOOHYSOVVVVVV
NOTES
Input Capacitor Input capacitors are not required on the ADR01/ADR02/
ADR03. 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 will
improve transient response in applications where the supply
suddenly changes. An additional 0.1 µF in parallel will also help
reducing noise from the supply.
Output Capacitor The ADR01/ADR02/ADR03 do not require output capacitors
for stability under any load condition. An output capacitor,
typically 0.1 µF, will filter out any low level noise voltage and
will not affect the operation of the part. On the other hand, the
load transient response can be improved with an additional 1µF
to 10 µF output capacitor in parallel. A capacitor here will act as
a source of stored energy for sudden increase in load current.
The only parameter that will degrade by adding an output
capacitor is the turn-on time, and it depends on the size of the
capacitor chosen.
TYPICAL PERFORMANCE CHARACTERISTICS Figure 3. ADR01 Typical Output Voltage vs. Temperature
Figure 4. ADR02 Typical Output Voltage vs. Temperature
Figure 5. ADR03 Typical Output Voltage vs. Temperature
Figure 6. ADR01 Supply Current vs. Input Voltage
Figure 7. ADR02 Supply Current vs. Input Voltage
Figure 8. ADR03 Supply Current vs. Input Voltage
Figure 9. ADR01 Load Regulation vs. Temperature
Figure 10. ADR02 Load Regulation vs. Temperature
Figure 11. ADR03 Load Regulation vs. Temperature
Figure 12. ADR01 Line Regulation vs. Temperature
Figure 13. ADR02 Line Regulation vs. Temperature
Figure 14. ADR03 Line Regulation vs. Temperature
