ADR291FR-REEL ,Low Noise Micropower Precision Voltage ReferencesSpecifications (V = 13.0 V, T = 2258C £ T £ 1858C unless otherwise noted)S A AParameter Symbol Cond ..
ADR291GR ,Low Noise Micropower Precision Voltage ReferencesSpecificationsS A AParameter Symbol Conditions Min Typ Max UnitsTEMPERATURE COEFFICIENT“E” Grade TC ..
ADR291GRU ,Precision, Micropower 2.5 V XFET™ ReferenceSPECIFICATIONS(V = 5 V to 15 V, T = –25C ≤ T ≤ +85C, unless otherwise noted.)S A AParameter Symbo ..
ADR291GRU ,Precision, Micropower 2.5 V XFET™ ReferenceGENERAL DESCRIPTION 12 µA, making these devices ideal for battery-powered instrumen-The ADR291 and ..
ADR291GRU ,Precision, Micropower 2.5 V XFET™ ReferenceSPECIFICATIONS (V = 5 V to 15 V, T = 25C, unless otherwise noted.)S AParameter Symbol Conditions M ..
ADR291GRU-REEL7 ,Low Noise Micropower Precision Voltage ReferencesSpecificationsS A AParameter Symbol Conditions Min Typ Max UnitsTEMPERATURE COEFFICIENT/
ADR291ER-ADR291FR-REEL-ADR291GR-ADR291GRU-REEL7-ADR292ER-ADR292ER-REEL-ADR292FR-ADR292GR
Low Noise Micropower Precision Voltage References
PIN CONFIGURATIONS
8-Lead Narrow Body SO (R Suffix)
VOUT
VIN
GND
8-Lead TSSOP (RU Suffix)
VOUT
VIN
GND
3-Pin TO-92 (T9 Suffix)
VIN
GND
VOUT
BOTTOM VIEWREV.A
Low Noise Micropower
Precision Voltage References
FEATURES
Voltage Options 2.048 V, 2.500 V and 4.096 V
2.7 V to 15 V Supply Range
Supply Current 12 mA max
Initial Accuracy 62 mV max
Temperature Coefficient 8 ppm/8C max
Low-Noise 6 mV p-p (0.1 Hz–10 Hz)
High Output Current 5 mA min
Temperature Range 2408C to 11258C
REF02/REF19x Pinout
APPLICATIONS
Portable Instrumentation
Precision Reference for 3 V and 5 V Systems
A/D and D/A Converter Reference
Solar Powered Applications
Loop-Current Powered Instruments
GENERAL DESCRIPTIONThe ADR290, ADR291 and ADR292 are low noise, micro-
power precision voltage references that use an XFET™ reference
circuit. The new XFET architecture offers significant perfor-
mance improvements over traditional bandgap and Zener-based
references. Improvements include: one quarter the voltage noise
output of bandgap references operating at the same current,
very low and ultralinear temperature drift, low thermal hyster-
esis and excellent long-term stability.
The ADR29x family are series voltage references providing stable
and accurate output voltages from supplies as low as 2.7 V. Out-
put voltage options are 2.048 V, 2.5 V and 4.096 V for the
ADR290, ADR291 and ADR292 respectively. Quiescent current
is only 12 mA, making these devices ideal for battery powered in-
strumentation. Three electrical grades are available offering initial
output accuracies of –2 mV, –3 mV and –6 mV max for the
ADR290 and ADR291 and –3 mV, –4 mV and –6 mV max for
the ADR292. Temperature coefficients for the three grades are
8 ppm/°C, 15 ppm/°C and 25 ppm/°C max, respectively. Line
regulation and load regulation are typically 30 ppm/V and
30 ppm/mA, maintaining the reference’s overall high perfor-
mance. For a device with 5.0 V output, refer to the ADR293
data sheet.
The ADR290, ADR291 and ADR292 references are specified
over the extended industrial temperature range of –40°C to
+125°C. Devices are available in the 8-lead SOIC, 8-lead TSSOP
and the TO-92 package.
XFET is a trademark of Analog Devices, Inc.
ADR290/ADR291/ADR292
ADR290–SPECIFICATIONS
Electrical Specifications
Electrical Specifications
Electrical SpecificationsNOTE
Specifications subject to change without notice.
(VS = 12.7 V, TA = 1258C unless otherwise noted)
(VS = 12.7 V, TA = 2408C £ TA £ 11258C unless otherwise noted)
(VS = 12.7 V, TA = 2258C £ TA £ 1858C unless otherwise noted)
ADR291–SPECIFICATIONS
Electrical Specifications
Electrical Specifications
Electrical SpecificationsNOTE
Specifications subject to change without notice.
ADR290/ADR291/ADR292
(VS = 13.0 V, TA = 1258C unless otherwise noted)
(VS = 13.0 V, TA = 2408C £ TA £ 11258C unless otherwise noted)
(VS = 13.0 V, TA = 2258C £ TA £ 1858C unless otherwise noted)
ADR290/ADR291/ADR292
ADR292–SPECIFICATIONS
Electrical Specifications
Electrical Specifications
Electrical SpecificationsNOTE
Specifications subject to change without notice.
(VS = 15 V, TA = 1258C unless otherwise noted)
(VS = 15 V, TA = 2408C £ TA £ 11258C unless otherwise noted)
(VS = 15 V, TA = 2258C £ TA £ 1858C unless otherwise noted)
WAFER TEST LIMITSNOTES
Electrical tests are performed as wafer probe to the limits shown. Due to variations in assembly methods and normal yield loss, yield after packaging is not guaranteed
for standard product dice. Consult factory to negotiate specifications based on dice lot qualification through sample lot assembly and testing.
Specifications subject to change without notice.
DICE CHARACTERISTICSDie Size 0.074 3 0.052 inch, 3848 sq. mils
(1.88 3 1.32 mm, 2.48 sq. mm)
Transistor Count: 52
For additional DICE ordering information, refer to databook.
(@ ILOAD = 0 mA, TA = 1258C unless otherwise noted)VINGND
3. VOUT(FORCE)
4. VOUT(SENSE)
ADR290/ADR291/ADR292
ABSOLUTE MAXIMUM RATINGS*Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 V
Output Short-Circuit Duration. . . . . . . . . . . . . . . . . Indefinite
Storage Temperature Range
T9, R, RU Package. . . . . . . . . . . . . . . . . 265°C to 1150°C
Operating Temperature Range
ADR290/ADR291/ADR292. . . . . . . . . . . 240°C to 1125°C
Junction Temperature Range
T9, R, RU Package. . . . . . . . . . . . . . . . . 265°C to 1125°C
Lead Temperature (Soldering, 60 sec). . . . . . . . . . . . 1300°C
NOTEqJA is specified for worst case conditions, i.e. qJA is specified for device in socket
for PDIP, and qJA is specified for a device soldered in circuit board for SOIC
packages.
*CAUTIONStresses above those listed under Absolute Maximum
Ratings may cause permanent damage to the device. This is a
stress rating only; functional operation at or above this specifi-
cation is not implied. Exposure to the above maximum rating
conditions for extended periods may affect device
reliability.Remove power before inserting or removing units from their
sockets.Ratings apply to both DICE and packaged parts, unless other-
wise noted
ORDERING GUIDEADR291ER, ADR291FR, ADR291GR
ADR292ER, ADR292FR, ADR292GR
CAUTIONESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the ADR290/ADR291/ADR292 features proprietary ESD protection circuitry, permanent damage
may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
TEMPERATURE – 8C
OUTPUT VOLTAGE – V255075100
2.044Figure 1.ADR290 VOUT vs. Temperature
TEMPERATURE – 8C
OUTPUT VOLTAGE – V255075100
2.496Figure 2.ADR291 VOUT vs. Temperature
TEMPERATURE – 8C
OUTPUT VOLTAGE – V255075100
4.092Figure 3.ADR292 VOUT vs. Temperature
INPUT VOLTAGE – V0162
QUIESCENT CURRENT – 8101214Figure 4.ADR290 Quiescent Current vs. Input Voltage
INPUT VOLTAGE – V0162
QUIESCENT CURRENT – 8101214Figure 5.ADR291 Quiescent Current vs. Input Voltage
INPUT VOLTAGE – V0162
QUIESCENT CURRENT – 8101214Figure 6.ADR292 Quiescent Current vs. Input Voltage
ADR290/ADR291/ADR292
TEMPERATURE –8C–50125–25
SUPPLY CURRENT – 255075100Figure 7.ADR290/ADR291/ADR292 Supply Current vs.
Temperature
TEMPERATURE –8C
LINE REGULATION – ppm/V255075100Figure 8.ADR290/ADR291/ADR292 Line Regulation vs.
Temperature
TEMPERATURE –8C
LINE REGULATION – ppm/V255075100Figure 9.ADR290/ADR291/ADR292 Line Regulation vs.
Temperature
LOAD CURRENT – mA
DIFFERENTIAL VOLTAGE – V
0.1Figure 10.ADR290 Minimum Input-Output Voltage
Differential vs. Load Current
LOAD CURRENT – mA
DIFFERENTIAL VOLTAGE – V
0.1Figure 11.ADR291 Minimum Input-Output Voltage
Differential vs. Load Current
LOAD CURRENT – mA
DIFFERENTIAL VOLTAGE – V
0.1Figure 12.ADR292 Minimum Input-Output Voltage
Differential vs. Load Current
