SGLS252A − AUGUST 2004 − REVISED JUNE 2008
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
DQualified for Automotive Applications
D1/2 VI Virtual Ground for Analog Systems
DMicropower Operation . . . 170 µA Typ,
VI = 5 V
DWide VI Range ...4 V to 40 V
DHigh Output-Current Capability
− Source . . . 20 mA Typ
− Sink . . . 20 mA Typ
DExcellent Output Regulation
− −102 µV Typ at IO = 0 to −10 mA
− +49 µV Typ at IO = 0 to +10 mA
DLow-Impedance Output . . . 0.0075 Ω Typ
DNoise Reduction Pin
description
In signal-conditioning applications utilizing a
single power source, a reference voltage equal to
one-half the supply voltage is required for
termination of all analog signal grounds. Texas
Instruments presents a precision virtual ground
whose output voltage is always equal to one-half
the input voltage, the TLE2426 rail splitter.
The unique combination of a high-performance,
micropower operational amplifier and a precision-
trimmed divider on a single silicon chip results in
a precise VO/VI ratio of 0.5 while sinking and
sourcing current. The TLE2426 provides a
low-impedance output with 20 mA of sink and
source capability while drawing less than 280 µA of supply current over the full input range of 4 V to 40 V. A
designer need not pay the price in terms of board space for a conventional signal ground consisting of resistors,
capacitors, operational amplifiers, and voltage references. For increased performance, the 8-pin package
provides a noise-reduction pin. With the addition of an external capacitor (CNR), peak-to-peak noise is reduced
while line ripple rejection is improved.
Initial output tolerance for a single 5-V or 12-V system is better than 1% over the full 40-V input range. Ripple
rejection exceeds 12 bits of accuracy. Whether the application is for a data acquisition front end, analog signal
termination, or simply a precision voltage reference, the TLE2426 eliminates a major source of system error.
ORDERING INFORMATION{
TAPACKAGE}ORDERABLE
PART NUMBER TOP-SIDE
MARKING
−40°C to 125°CSOIC (D) Tape and Reel TLE2426QDRQ1 2426Q1
†For the most current package and ordering information, see the Package Option Addendum at the
end of this document, or see the TI web site at http://www.ti.com.
‡Package drawings, thermal data, and symbolization are available at http://www.ti.com/packaging.
Copyright 2008 Texas Instruments Incorporated
!" # $%&" !# '%()$!" *!"&+
*%$"# $ " #'&$$!"# '& ",& "&# &-!# #"%&"#
#"!*!* .!!"/+ *%$" '$&##0 *&# " &$&##!)/ $)%*&
"&#"0 !)) '!!&"&#+
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
1
2
3
4
8
7
6
5
OUT
COMMON
IN
NC
NOISE REDUCTION
NC
NC
NC
D PACKAGE
(TOP VIEW)
NC − No internal connection
VO
VI
4
2
0
8
6
0 0.25 0.5 0.75 1
Voltage − V
t − Time − s
INPUT/OUTPUT TRANSFER CHARACTERISTICS
10
VO+
VI
2
VIVO
SGLS252A − AUGUST 2004 − REVISED JUNE 2008
2POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature (unless otherwise noted)†
Continuous input voltage, VI 40 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous filter trap voltage 40 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current, IO ±80 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Duration of short-circuit current at (or below) 25°C (see Note 1) unlimited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation See Dissipation Rating Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: Q suffix −40°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg −65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D package 260°C. . . . . . . . . . . . . . . . . . . . .
†Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: The output may be shorted to either supply. Temperature and/or supply voltages must be limited to ensure that the maximum dissipation
rating is not exceeded.
DISSIPATION RATING TABLE
PACKAGE
T
A
≤ 25°CDERATING FACTOR T
A
= 70°C T
A
= 85°C T
A
= 125°C
PACKAGE
TA ≤ 25 C
POWER RATING
DERATING FACTOR
ABOVE T
A
= 25°C
TA = 70 C
POWER RATING
TA = 85 C
POWER RATING
TA = 125 C
POWER RATING
D1102 mV 10.3 mW/°C638.5 mW 484 mW 72.1 mW
recommended operating conditions
MIN MAX UNIT
Input voltage, VI4 40 V
Operating free-air temperature, TA−40 125 °C
SGLS252A − AUGUST 2004 − REVISED JUNE 2008
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electrical characteristics at specified free-air temperature, VI = 5 V, IO = 0 (unless otherwise noted)
PARAMETER TEST CONDITIONS TA†MIN TYP MAX UNIT
VI = 4 V 1.98 2 2.02
Output voltage
VI = 5 V 25°C2.48 2.5 2.52
V
Output voltage VI = 40 V
25 C
19.8 20 20.2 V
VI = 5 V Full range 2.465 2.535
Temperature coefficient of output
Full range
25
ppm/°C
Temperature coefficient of output
voltage Full range 25 ppm/°C
Supply current
No load
VI = 5 V 25°C 170 300
A
Supply current No load VI = 4 to 40 V Full range 400 µA
Output voltage regulation
IO = 0 to −10 mA
25°C −0.102 ±0.7
Output voltage regulation
(sourcing current)‡
IO = 0 to −10 mA Full range ±10 mV
(sourcing current)‡
IO = 0 to −20 mA 25°C −0.121 ±1.4
mV
Output voltage regulation
IO = 0 to 10 mA 25°C 0.049 ±0.5
Output voltage regulation
(sinking current)‡
IO = 0 to 8 mA Full range ±10 mV
(sinking current)‡
IO = 0 to 20 mA 25°C 0.175 ±1.4
mV
Output impedance‡25°C 7.5 22.5 mΩ
Noise-reduction impedance 25°C110 kΩ
Short-circuit current
Sinking current, VO = 5 V
25°C
26
mA
Short-circuit current Sourcing current, VO = 0 25°C−47 mA
Output noise voltage, rms
f = 10 Hz to 10 kHz
CNR = 0
25°C
120
V
Output noise voltage, rms f = 10 Hz to 10 kHz CNR = 1 µF25°C30 µV
VO to 0.1%, IO = ±10 mA
CL = 0
25°C
290
Output voltage current step response
VO to 0.1%, IO = ±10 mA CL = 100 pF 25°C275
s
Output voltage current step response
VO to 0.01%, IO = ±10 mA
CL = 0
25°C
400 µs
VO to 0.01%, IO = ±10 mA CL = 100 pF 25°C390
Step response
VI = 0 to 5 V, VO to 0.1%
CL = 100 pF
25°C
20
µs
Step response
VI = 0 to 5 V, VO to 0.01%
C
L
= 100 pF
25
°
C
120 µ
s
†Full range is −40°C to 125°C.
‡The listed values are not production tested.
SGLS252A − AUGUST 2004 − REVISED JUNE 2008
4POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified free-air temperature, VI = 12 V, IO = 0 (unless otherwise noted)
PARAMETER TEST CONDITIONS TA†MIN TYP MAX UNIT
VI = 4 V 1.98 2 2.02
Output voltage
VI = 12 V 25°C5.95 6 6.05
V
Output voltage VI = 40 V
25 C
19.8 20 20.2 V
VI = 12 V Full range 5.925 6.075
Temperature coefficient of output voltage
Full range
35
ppm/°C
Temperature coefficient of output voltage Full range 35 ppm/°C
Supply current
No load
VI = 12 V 25°C 195 300
A
Supply current No load VI = 4 to 40 V Full range 400 µA
Output voltage regulation
IO = 0 to −10 mA
25°C −1.48 ±10
Output voltage regulation
(sourcing current)‡
IO = 0 to −10 mA Full range ±10 mV
(sourcing current)‡
IO = 0 to −20 mA 25°C −3.9 ±10
mV
Output voltage regulation
IO = 0 to 10 mA 25°C 2.27 ±10
Output voltage regulation
(sinking current)‡
IO = 0 to 8 mA Full range ±10 mV
(sinking current)‡
IO = 0 to 20 mA 25°C 4.3 ±10
mV
Output impedance‡25°C 7.5 22.5 mΩ
Noise-reduction impedance 25°C110 kΩ
Short-circuit current
Sinking current, VO = 12 V
25°C
31
mA
Short-circuit current Sourcing current, VO = 0 25°C−70 mA
Output noise voltage, rms
f = 10 Hz to 10 kHz
CNR = 0
25°C
120
V
Output noise voltage, rms f = 10 Hz to 10 kHz CNR = 1 µF25°C30 µV
VO to 0.1%, IO = ±10 mA
CL = 0
25°C
290
Output voltage current step response
VO to 0.1%, IO = ±10 mA CL = 100 pF 25°C275
s
Output voltage current step response
VO to 0.01%, IO = ±10 mA
CL = 0
25°C
400 µs
VO to 0.01%, IO = ±10 mA CL = 100 pF 25°C390
Step response
VI = 0 to 12 V, VO to 0.1%
CL = 100 pF
25°C
12
µs
Step response
VI = 0 to 12 V, VO to 0.01%
C
L
= 100 pF
25
°
C
120 µ
s
†Full range is −40°C to 125°C.
‡The listed values are not production tested.
SGLS252A − AUGUST 2004 − REVISED JUNE 2008
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TYPICAL CHARACTERISTICS
Table Of Graphs
FIGURE
Output voltage Distribution 1, 2
Output voltage change vs Free-air temperature 3
Output voltage error vs Input voltage 4
Input bias current
vs Input voltage 5
Input bias current vs Free-air temperature 6
Output voltage regulation vs Output current 7
Output impedance vs Frequency 8
Short-circuit output current
vs Input voltage 9, 10
Short-circuit output current vs Free-air temperature 11, 12
Ripple rejection vs Frequency 13
Spectral noise voltage density vs Frequency 14
Output voltage response to output current step vs Time 15
Output voltage power-up response vs Time 16
Output current vs Load capacitance 17
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6POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS†
Figure 1
DISTRIBUTION
OF
OUTPUT VOLTAGE
2
1
0.5
0
3
1.5
2.48 2.49 2.5 2.51 2.52
Percentage of Units − %
2.5
VO − Output Voltage − V
98 Units Tested
From 2 Wafer Lots
VI = 5 V
TA = 25°C
Figure 2
6.05 6.075
VO − Output Voltage − V
20
10
0
40
30
6 6.025 6.1
Percentage of Units − %
DISTRIBUTION
OF
OUTPUT VOLTAGE
VI = 12 V
TA = 25°C
98 Units Tested
From 2 Wafer Lots
Figure 3
VO − Output Voltage Change − mV
0
02550
75
OUTPUT VOLTAGE CHANGE
vs
FREE-AIR TEMPERATURE
150
75 100 125
∆VO
TA − Free-Air Temperature − °C
VI = 40 V IO = 0
VI = 12 V
VI = 4 V, 5 V
−75
−150
−75 −50 −25
Figure 4
2
1
0
−1 048121620
Output Voltage Error − %
3
OUTPUT VOLTAGE ERROR
vs
INPUT VOLTAGE
4
24 36 40
VI − Input Voltage − V
28 32
IO = 0
TA = 25°C
Error Equals VO/VI Deviation From 50%
†Data at high and low temperatures are applicable within the rated operating free-air temperature ranges of the various devices.
SGLS252A − AUGUST 2004 − REVISED JUNE 2008
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TYPICAL CHARACTERISTICS†
Figure 5
150
100
50
00 5 10 15 20 25
200
250
INPUT BIAS CURRENT
vs
INPUT VOLTAGE
300
30 35 40
VI − Input Voltage − V
IO = 0
TA = −55°C
TA = 125°C
TA = 25°C
IIB − Input Bias Current −
IIB Aµ
Figure 6
150
100
50
002550
200
250
INPUT BIAS CURRENT
vs
FREE-AIR TEMPERATURE
300
75 100 125
VI = 40 V
VI = 12 V
VI = 5 V
VI = 4 V
IO = 0
TA − Free-Air Temperature − °C
−50−75 −20
IIB − Input Bias Current −
IIB Aµ
Figure 7
IO − Output Current − mA
OUTPUT VOLTAGE REGULATION
vs
OUTPUT CURRENT
01020
−20 −10
Output Voltage Regulation − µV
VI = 5 V
TA = 25°C
200
150
100
50
0
−50
−100
−150
−200
TYP
Figure 8
1
0.1
0.01
0.00110 100 1 k
10
f − Frequency − Hz
100
10 k 100 k 1 M
OUTPUT IMPEDANCE
vs
FREQUENCY
VI = 5 V or 12 V
IO = 0
TA = 25°C
− Output Impedance − Ωzo
†Data at high and low temperatures are applicable within the rated operating free-air temperature ranges of the various devices.
SGLS252A − AUGUST 2004 − REVISED JUNE 2008
8POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS†
Figure 9
0 5 10 15 20 25
SHORT-CIRCUIT OUTPUT CURRENT
vs
INPUT VOLTAGE
0
30 35 40
IOS − Short-Circuit Output Current − mA
IOS
VI − Input Voltage − V
VO = GND
(Output Sourcing)
TA = 25°C
TA = −55°C
TA = 125°C
−20
−40
−60
−80
Figure 10
VI − Input Voltage − V
20
10
00 5 10 15 20 25
30
SHORT-CIRCUIT OUTPUT CURRENT
vs
INPUT VOLTAGE
40
30 35 40
IOS − Short-Circuit Output Current − mA
IOS
VO = VI
(Output Sinking)
TA = −55°C
TA = 125°C
TA = 25°C
Figure 11
125
0
IOS − Short-Circuit Output Current − mA
IOS
TA − Free-Air Temperature − °C
SHORT-CIRCUIT OUTPUT CURRENT
vs
FREE-AIR TEMPERATURE
0 25 50 75 100
VI = 12 V
VI = 4 V
VO = GND
(Output Sourcing)
−10
−20
−30
−40
−50
−60
−70
−80
−75 −50 −25
VI = 5 V
VI = 40 V
Figure 12
SHORT-CIRCUIT OUTPUT CURRENT
vs
FREE-AIR TEMPERATURE
20
10
002550
30
40
75 100 125
IOS − Short-Circuit Output Current − mA
IOS
TA − Free-Air Temperature − °C
VI = 4 V
VI = 5 V
VI = 12 V
VI = 40 V
VO = VI
(Output Sinking)
−75 −50 −25
†Data at high and low temperatures are applicable within the rated operating free-air temperature ranges of the various devices.
SGLS252A − AUGUST 2004 − REVISED JUNE 2008
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TYPICAL CHARACTERISTICS
Figure 13
50
40
20
10
0
90
30
10 100 1 k 10 k
Ripple Rejection − dB
70
60
80
RIPPLE REJECTION
vs
FREQUENCY
100
100 k 1 M
f − Frequency − Hz
VI = 5 V or 12 V
∆VI(PP) = 1 V
IO = 0
TA = 25°C
CNR = 1 µF
CNR = 0
Figure 14
100 k
200
100
0
400
300
1
SPECTRAL NOISE VOLTAGE DENSITY
vs
FREQUENCY
f − Frequency − Hz
10 100 1 k 10 k
CNR = 1 µF
VI = 5 V or 12 V
TA = 25°C
CNR = 0
− Spectral Noise Voltage Density −
VnnV/ Hz
Figure 15
IO Step
0
−1
−1.5 V
4
−2
0 1000 2000
VO − Change In Output Voltage − mV
2
1
3
OUTPUT VOLTAGE RESPONSE
TO OUTPUT CURRENT STEP
1.5 V
3000 4000
∆V
O
Time − µs
0.1%
0.01%
10 mA
0.01%
0.1%
−10 mA
−4
−3
VI = 5 V
CL = 100 pF
TA = 25°C
Figure 16
0.1%
OUTPUT VOLTAGE POWER-UP RESPONSE
1
0
0
3
2
0 50 100 200
V) − Output Voltage − V
VO
Time − µs
2.5
1.5
0.5
5
Output Voltage Response
Input Voltage Step
0.01%
150
IO = 0
CL = 100 pF
TA = 25°C
SGLS252A − AUGUST 2004 − REVISED JUNE 2008
10 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
10−6
−20
5
0
−10
−15
−5
20
10
15
STABILITY RANGE
OUTPUT CURRENT
vs
LOAD CAPACITANCE
IO− Output Current − mA
CL− Load Capacitance − mF
VI = 5 V
TA = 25°CUnstable
Stable
10−5 10−4 10−3 10−2 10−1 100101102
Figure 17
SGLS252A − AUGUST 2004 − REVISED JUNE 2008
11
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MACROMODEL INFORMATION
* TLE2426 OPERATIONAL AMPLIFIER “MACROMODEL” SUBCIRCUIT
* CREATED USING PARTS RELEASE 4.03 0N 08/21/90 AT 13:51
* REV (N/A) SUPPLY VOLTAGE: 5 V
* CONNECTIONS: FILTER
| INPUT
* | | COMMON
* | | | OUTPUT
*||||
.SUBCKT TLE2426 1 3 4 5
C1 11 12 21.66E−12
C2 6 7 30.00E−12
C3 87 0 10.64E−9
CPSR 85 86 15.9E−9
DCM+ 81 82 DX
DCM− 83 81 DX
DC 5 53 DX
DE 54 5 DX
DLP 90 91 DX
DLN 92 90 DX
DP 4 3 DX
ECMR 84 99 (2,99) 1
EGND 99 0 POLY(2) (3,0) (4,0) 0 .5 .5
EPSR 85 0 POLY(1) (3,4) −16.22E− 6 3.24E− 6
ENSE 89 2 POLY(1) (88,0) 120E−6 1
FB 7 99 POLY(6) VB VC VE VLP VLN VPSR 0 74.8E6 − 10E6 10E6 10E6 −10E6 74E6
GA 6 0 11 12 320.4E − 6
GCM 0 6 10 99 1.013E− 9
GPSR 85 86 (85,86) 100E − 6
GRC1 4 11 (4,11) 3.204E−4
GRC2 4 12 (4,12) 3.204E−4
GRE1 13 10 (13,10) 1.038E−3
GRE2 14 10 (14,10) 1.038E−3
HLIM 90 0 VLIM 1K
HCMR 80 1 POLY(2) VCM+ VCM− 0 1E2 1E2
IRP 3 4 146E−6
IEE 3 10 DC 24.05E−6
IIO 2 0 .2E−9
I1 88 0 1E− 21
Q1 11 89 13 QX
Q2 12 80 14 QX
R2 6 9 100.0E3
RCM 84 81 1K
REE 10 99 8.316E6
RN1 87 0 2.55E8
RN2 87 88 11.67E3
RO1 8 5 63
RO2 7 99 62
VCM+ 82 99 1.0
VCM− 83 99 −2.3
VB 9 0 DC 0
VC 3 53 DC 1.400
VE 54 4 DC 1.400
VLIM 7 8 DC 0
VLP 91 0 DC 30
VLN 092DC30
VPSR 0 86 DC 0
RFB 5 2 1K
RIN1 3 1 220K
RIN2 1 4 220K
.MODEL DX D(IS=800.OE−18)
.MODEL QX PNP(IS=800.OE−18 BF=480)
.ENDS
PACKAGE OPTION ADDENDUM
www.ti.com 17-Aug-2012
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status (1) Package Type Package
Drawing Pins Package Qty Eco Plan (2) Lead/
Ball Finish MSL Peak Temp (3) Samples
(Requires Login)
TLE2426QDRG4Q1 ACTIVE SOIC D 8 2500 Green (RoHS
& no Sb/Br) CU NIPDAU Level-1-260C-UNLIM
TLE2426QDRQ1 ACTIVE SOIC D 8 TBD Call TI Call TI
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability
information and additional product content details.
TBD: The Pb-Free/Green conversion plan has not been defined.
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight
in homogeneous material)
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
OTHER QUALIFIED VERSIONS OF TLE2426-Q1 :
•Catalog: TLE2426
•Enhanced Product: TLE2426-EP
PACKAGE OPTION ADDENDUM
www.ti.com 17-Aug-2012
Addendum-Page 2
NOTE: Qualified Version Definitions:
•Catalog - TI's standard catalog product
•Enhanced Product - Supports Defense, Aerospace and Medical Applications
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