Modular MSOP8 EVM Guide Datasheet by Texas Instruments

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J9 TEXAS INSTRUMENTS
Modular MSOP8 EVM
June 2009 Data Acquisition
Users Guide
SLAU115A
cause harm i0 you
-3
Read This First
Preface
Read This First
About This Manual
This user’s guide describes the characteristics, operation, and use of the
Modular MSOP8 EVM. This EVM is a multi-device, 12 to 16 bit, SSI, analog
to digital converter Evaluation Module. A complete circuit description, as well
as schematic diagram and bill of materials, are included.
How to Use This Manual
This document contains the following chapters:
-Chapter 1—EVM Overview
-Chapter 2—Analog Interface
-Chapter 3—Digital Interface
-Chapter 4—Power Supplies
-Chapter 5—EVM Operation
-Chapter 6—EVM Bill of Materials and Schematic
Information About Cautions and Warnings
This book may contain cautions and warnings.
This is an example of a caution statement.
A caution statement describes a situation that could potentially
damage your software or equipment.
This is an example of a warning statement.
A warning statement describes a situation that could potentially
cause harm to you.
-4
The information in a caution or a warning is provided for your protection.
Please read each caution and warning carefully.
Related Documentation From Texas Instruments
To obtain a copy of any of the following TI documents, call the Texas
Instruments Literature Response Center at (800) 477−8924 or the Product
Information Center (PIC) at (972) 644−5580. When ordering, identify this
booklet by its title and literature number. Updated documents can also be
obtained through our website at www.ti.com.
EVM Compatible Device Data Sheets: Literature Number:
ADS7816 SBAS110
ADS7817 SBAS230
ADS7818 SBAS078
ADS7822 SBAS062
ADS7834 SBAS098
ADS7835 SBAS102
ADS8317 SBAS356
ADS8320 SBAS108
ADS8321 SBAS123
ADS8324 SBAS172
ADS8325 SBAS226
ADS8326 SBAS343
Application Notes/Additional Literature: Literature Number:
Op Amps for Everyone SLOD006
5−6K Interface Board SLAU104
Single and Bipolar Supply Signal Conditioning Boards SLAU105
FCC Warning
This equipment is intended for use in a laboratory test environment only. It gen-
erates, uses, and can radiate radio frequency energy and has not been tested
for compliance with the limits of computing devices pursuant to subpart J of
part 15 of FCC rules, which are designed to provide reasonable protection
against radio frequency interference. Operation of this equipment in other en-
vironments may cause interference with radio communications, in which case
the user at his own expense will be required to take whatever measures may
be required to correct this interference.
Contents
i
Contents
1 EVM Overview 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Introduction 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Analog Interface 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Digital Interface 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Power Supplies 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 ADC Power 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Stand Alone Operation 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Reference Voltage 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 EVM Operation 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 Analog Input 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Digital Control 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Chip Select (Shut Down) 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4 Digital I/O Buffers 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.5 Default Jumper Locations 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 EVM BOM and Schematic 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1 EVM Schematic 6-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables
21 Analog Interface Pin Out 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31 Digital Interface Pin Out 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
41 Power Supply Pin Out 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
51 List of Jumpers 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
61 Bill of Materials 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents
ii
1-1
EVM Overview
EVM Overview
The following section gives a general overview of the Modular MSOP8
evaluation board.
Topic Page
1.1 Features 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Introduction 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 1
Features
1-2
1.1 Features
-Fullfeatured evaluation board for a variety of single channel, eight pin Mi-
cro SOP, 12 and 16-bit, serial Output, analog to digital converters
-On-board reference and buffer circuits
-High-speed serial interface
-Modular design for use with a variety of DSP and micro controller interface
boards
1.2 Introduction
The Modular MSOP8 Evaluation Module is an updated version of the
Burr-Brown DEM-MSOP8 evaluation board. The EVM is designed so that a
single printed wiring board (PWB) supports a variety of high speed 12 and 16
bit serial ADCs.
The modular EVM form factor allows for direct evaluation of the ADCs
performance and operating characteristics. This EVM is compatible with the
56K Interface Board (SLAU104) from Texas Instruments.
2-1
Analog Interface
Analog Interface
For maximum flexibility, the Modular MSOP8 EVM is designed for easy
interfacing to multiple analog sources. Samtec part numbers
SSW-110-22-F-D-VS-K and TSM-110-01-T-DV-P provide a convenient 10-pin
dual row header/socket combination at J1. This header/socket provides
access to the analog input pins of the ADC. Consult Samtec at
www.samtec.com or call 1800SAMTEC9 for a variety of mating connector
options.
Table 2−1.Analog Interface Pin Out
Pin Number Signal Description
J1.2 AD_IN+ Noninverting Input (Differential Devices)/Analog Input (Single Ended Devices)
J1.4 AD_INInverting Input (Differential Devices)/Analog Ground (Single Ended Devices)
J1.6 Unused
J1.8 Unused
J1.10 Unused Pins are unused and should be left open for use with future amplifier and sensor
J1.12 Unused
Pins are unused and should be left open for use with future amplifier and sensor
input modules.
J1.14 Unused
J1.16 Unused
J1.18 REF() Unused
J1.20 REF(+) External Reference Source Input (2.5V NOM, 2.525 MAX)
J1.15 Unused
J1.1 J1.19
(odd) AGND Analog ground connections (except J1.15)
Chapter 2
2-2
3-1
Digital Interface
Digital Interface
The Modular MSOP8 EVM is designed for easy interfacing to multiple control
platforms. Samtec part numbers, SSW-110-22-F-D-VS-K and
TSM-110-01-T-DV-P, provide a convenient 10-pin dual row header/socket
combination at J2. This header/socket provides access to the digital control
and serial data pins of the MSOP8 EVM. Consult Samtec at www.samtec.com
or 1800SAMTEC9 for a variety of mating connector options.
Table 31.Digital Interface Pin Out
Pin Number Signal Description
J2.1 CS Chip Select Active low signal, enables data transfer jumper configurable
(see schematic)
J2.3 SCLK Serial Clock
J2.5 SCLKR Serial Clock Return (for DSP Host systems)
J2.7 FS Frame Sync for DSP host systems alternate Chip Select through JMP2 (see
schematic)
J2.9 FSR Frame Sync Return (for DSP Host systems)
J2.11 Unused
J2.13 SDO Serial Data Output
J2.15 Unused
J2.17 Unused
J2.19 SPARE
Chapter 3
3-2
4-1
Power Supplies
Power Supplies
The Modular MSOP8 EVM board requires 5 V dc for the analog section. This
includes the voltage reference (U2), the reference buffer (U4), and optionally,
the ADC installed on the EVM (via JMP1). Supply voltages of 1.8 V to 5 V dc
for the digital section are also required. When used in combination with one
of the DAP Interface boards, J3 provides connection to the common power bus
described in document SLAU104. Table 41 shows the pin out of J3.
Table 41.Power Supply Pin Out
Signal Pin Number Signal
Unused 1 2 Unused
+5VA 3 4 Unused
DGND 5 6 AGND
+1.8VD 7 8 +VD1
+3.3VD 9 10 +5VD
When power is supplied to J3, JMP3 allows for one of four different dc voltages
to be applied to the digital sections of the ADC. See the schematic and PWB
silkscreen for details.
Topic Page
4.1 ADC Power 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Stand Alone Operation 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Reference Voltage 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 4
ADC Power
4-2
4.1 ADC Power
The device installed on the modular MSOP8 EVM has several options in
regards to its power source. Refer to the schematic for the following
discussion.
JMP1 and JMP3 allow the user to select the power supply used by the ADC.
When JMP1 is in the default factory position (Shunt on pins 12), power to the
ADC comes from J3.3 or TP5. Single gate digital buffers (U3, U5, and U6) are
installed on the ADCs digital input/output lines to allow operation with low
voltage controllers, such as the MSP430. The supply voltage to these buffers
is determined by JMP3 or the voltage applied to TP7.
4.2 Stand Alone Operation
When used as a stand alone EVM, the analog power can be applied to TP5,
referenced to TP6. Digital power can be applied to TP7 referenced to TP4.
While filters are provided for all power supply inputs, optimal performance of
the EVM requires a clean, well-regulated power source.
Caution
The ADC’s that are compatible with this EVM have a variety of
power supply requirements. Check the appropriate data sheets
and verify all power supplies are within the safe operating limits of
the ADC before applying power to the EVM.
4.3 Reference Voltage
The modular MSOP8 can be configured to use the onboard reference/buffer
circuits (U2 and U4) or an external reference applied to J1.20. Jumpers JMP5
and JMP6 control the reference source. In the factory default position (shunt
on JMP5 pins 12), a 2.5 V reference is supplied by U2. Moving the shunt at
JMP5 to positions 23 allows an external reference applied to J1.20 to be
used.
Caution
The ADC’s that are compatible with this EVM have a variety of
reference requirements. Check the appropriate data sheets and
verify external reference sources are within the safe operating
limits of the ADC before applying power to the EVM.
JMP6 controls the actual application of the reference source to the ADC. Note
that JMP6 is not installed on EVM boards for ADS7818, ADS7834, and
ADS7835 devices. In the factory default position (shunt on pins 12), the
reference source is the on board reference/buffer circuit. Moving the shunt on
JMP6 to pins 23 allows the voltage applied to the ADC (+Vadc) to be used
as the reference source.
5-1
EVM Operation
EVM Operation
The following section provides information in the analog input, digital control,
and general operating conditions of the Modular MSOP8 EVM.
Topic Page
5.1 Analog Input 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Digital Control 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 Chip Select (Shut Down) 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4 Digital I/O Buffers 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.5 Default Jumper Locations 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 5
Analog Input
5-2
5.1 Analog Input
The analog input source can be applied directly to J1 (top or bottom side) or
through optional amplifier and signal conditioning modules. The analog input
range is dependent on the configuration of the EVM and the ADC installed at
location U1. Consult the datasheet for the device to determine the maximum
analog input range.
5.2 Digital Control
The digital control signals can be applied directly to J2 (top or bottom side).
The modular MSOP8 EVM can also be connected directly to a DSP or a micro
controller interface board, such as the 56K Interface Board. See the product
folder for the EVM or the installed device for a current list of compatible
interface and/or accessory boards.
5.3 Chip Select (Shut Down)
Jumper JMP2 is provided to allow the selection of the signals applied to the
chip select (/CS) or shutdown (SHDN) pin of the ADC installed on the EVM.
The factory default condition for the EVM is to place a shunt jumper between
pins 12 of JMP2. This allows the Frame Sync (FS) signal from DSP host
systems to be used as a chip select for the ADC. This signal originates from
J2.7. When JMP2 is moved to pins 23, the /CS (SHDN) signal is applied via
J2.1.
5.4 Digital I/O Buffers
Single gate buffers U3, U5 and U6 are provided to ensure the safe operation
of the modular MSOP8 EVM with low voltage host controllers. The digital I/O
voltage applied to these buffers via JMP3 should be set in accordance with the
operating voltage of the host controller.
5.5 Default Jumper Locations
Table 51 provides a list of jumpers found on the EVM and their factory default
conditions.
Table 51.List of Jumpers
Jumper Shunt Position Jumper Description
JMP1 Pins 12Controls ADC Supply Voltage (default is +5Va Source)
JMP2 Pins 12Controls ADC /CS(SHDN) Pin (default is FS from DSP Host)
JMP3 Pins 56Controls Digital I/O Voltage (default is +3.3Vd Source)
JMP4 CLOSED Ties ANALOG and DIGITAL grounds together
JMP5 Pins 12Controls External Ref. Source (default is +2.5V from U2)
JMP6 Pins 12Controls REFERENCE Source to ADC (default is onboard reference/buffer
circuit)
6-1
EVM BOM and Schematic
EVM BOM and Schematic
Topic Page
6.1 EVM Schematic 6-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The following table contains a complete bill of materials for the modular
MSOP8 EVM bill of materials.
Table 61.Bill of Materials
Qty. Designators Description Manufacturer Mfg. Part Number
1 N/A Printed Wiring Board TI 6450845
0C2 C3 C4 C13 Not Installed
0 R11 Not Installed
1 C1 0.47 µF, 0805, ceramic, X7R, 16 V, 10% Panasonic ECJ2FB1C474K
2C11 C12 0.1 µF, 0805, ceramic, X7R, 50 V, 10% Panasonic ECJ2YB1H104K
3C6 C8 C10 10 µF, 1206, ceramic, X7R, 10 V, 10% Murata GRM31CR71A106KA01L
3C5 C14 C15 10 µF, A case, tantalum, 10 V AVX TAJA106M010RNJ
3L1 L2 L3 15 µH inductor, SMT, 1608 Series Inductors, Inc. CTDS1608C153
2J1 J2 (top side) 10 Pin, dual row, SMT header (20 [pos) Samtec TSM11001TDVP
2J1B J2B (bottom side) 10 Pin, dual row, SMT socket (20 pos) Samtec SSW11022FDVSK
1J3 (bottom side) 5 Pin, dual row, SMT socket (10 pos) Samtec SSW10522FDVSK
2R9 R10 R12 33 , 0805, 5%, 0.1W Resistor Yageo America RC0805JR0733RL
4R1 R2 R3 R4 R6 0 , 0805, 0.1 W resistor Yageo America RC0805JR070RL
5TP1 TP2 TP3 TP5 TP7 Red test point loop Keystone 5001
2TP4 TP6 Black test point loop Keystone 5000
0 U1 Varies (see Note)
1 U2 REF3025 TI REF3025AIDBZT
3U3 U5 U6 SN74LVC1G125 TI SN74LVC1G125DBVT
1 U4 OPA353N TI OPA353NA/250
3JMP1 JMP2 JMP5 3 Pin , 2 mm header Samtec TMMH103TS
1 JMP3 4 Pin, dual row, TH header (8 positive) Samtec TSW10407LD
Note: The device installed at location U1 is dependent on the EVM ordered. This device is soldered to the board for best perfor-
mance. U1 may be replaced with any device listed in the EVM compatible device data sheets table found at the beginning
of this document.
Chapter 6
EVM Schematic
6-2
6.1 EVM Schematic
The schematic diagram is provided as a reference.
1 2 3 4
A
B
C
D
4
321
D
C
B
A
ti
12500 TI Blvd. Dallas, Texas 75243
Title:
SHEET: OF:FILE:
SIZE: DATE: REV:
31-Jul-2003
Revision History
REV ECN Number Approved
Drawn By:
Engineer:
SDO
C8
10uF
+5Va
JMP5
JMP6
SCLK
/CS
C11
0.1uF
C12
0.1uF
R11
NI
+V(i/o)
JMP4
TP2
+5Va
12
34
56
78
910
11 12
13 14
15 16
17 18
19 20
J1
12
34
56
78
910
11 12
13 14
15 16
17 18
19 20
J2
R9 33
R10 33
12
34
56
78
910
J3
+5Va
SCLK
/CS SDO
REF+
REF-
/CS(SHDN)
5
REF 1
GND
4
IN+
2
IN-
3
+Vcc 8
DCLOCK
7
SDO 6
U1
3
4
1
5
2
U4
OPA353N
R12
33
C6
10uF
VIN
1
GND
3
OUT 2
U2
REF3025
C1
0.47uF
+5Va
R4
0 ohm
R6
0 ohm
C10
10uF VREF
AD_IN+
AD_IN-
5
3
U5
SN74LVC1G125
5
3
U6
SN74LVC1G125
TP3
TP1
TP5
TP7
TP4
TP6
R1
0 ohm
C4
NI
C2
NI
C3
NI
L1
15uF
JMP1
+V(i/o)
+V(i/o)
+V(i/o)
+V(adc)
JMP2
+LVa
+V(i/o)
+5Vd
+3.3Vd
12
34
56
78
JMP3
+1.8Vd
+VD1
AGNDDGND
C13
NI
5
3
U3
SN74LVC1G125
R2
0 ohm
R3
0 ohm
Tom Hendrick
Tom Hendrick B
ADSMSOP8 Evaluation Module
Schematic
B
11EDGE #6450847
B Initial Release TH
L2
15uF
+
C5
10uF
+
C14
10uF
L3
15uF
+
C15
10uF
+LVa
6-3
EVALUATION BOARD/KIT IMPORTANT NOTICE
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:
This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR
EVALUATION PURPOSES ONLY and is not considered by TI to be a finished endproduct fit for general consumer use.
Persons handling the product(s) must have electronics training and observe good engineering practice standards. As
such, the goods being provided are not intended to be complete in terms of required design, marketing, and/or
manufacturingrelated protective considerations, including product safety and environmental measures typically found
in end products that incorporate such semiconductor components or circuit boards. This evaluation board/kit does not
fall within the scope of the European Union directives regarding electromagnetic compatibility, restricted substances
(RoHS), recycling (WEEE), FCC, CE or UL, and therefore may not meet the technical requirements of these directives
or other related directives.
Should this evaluation board/kit not meet the specifications indicated in the Users Guide, the board/kit may be returned
within 30 days from the date of delivery for a full refund. THE FOREGOING WARRANTY IS THE EXCLUSIVE
WARRANTY MADE BY SELLER TO BUYER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED,
OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR
PURPOSE.
The user assumes all responsibility and liability for proper and safe handling of the goods. Further, the user indemnifies
TI from all claims arising from the handling or use of the goods. Due to the open construction of the product, it is the users
responsibility to take any and all appropriate precautions with regard to electrostatic discharge.
EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE
OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES.
TI currently deals with a variety of customers for products, and therefore our arrangement with the user is not exclusive.
TI assumes no liability for applications assistance, customer product design, software performance, or
infringement of patents or services described herein.
Please read the Users Guide and, specifically, the Warnings and Restrictions notice in the Users Guide prior to handling
the product. This notice contains important safety information about temperatures and voltages. For additional information
on TIs environmental and/or safety programs, please contact the TI application engineer or visit www.ti.com/esh.
No license is granted under any patent right or other intellectual property right of TI covering or relating to any machine,
process, or combination in which such TI products or services might be or are used.
FCC WARNING
This evaluation board/kit is intended for use for ENGINEERING DEVELOPMENT, DEMONSTRATION, OR
EVALUATION PURPOSES ONLY and is not considered by TI to be a finished endproduct fit for general consumer use.
It generates, uses, and can radiate radio frequency energy and has not been tested for compliance with the limits of
computing devices pursuant to part 15 of FCC rules, which are designed to provide reasonable protection against radio
frequency interference. Operation of this equipment in other environments may cause interference with radio
communications, in which case the user at his own expense will be required to take whatever measures may be required
to correct this interference.
EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the input voltage range of 1.8VDC to 5 VDC; and the output voltage range of
1.8 VDC to 5 VDC.
Exceeding the specified input range may cause unexpected operation and/or irreversible damage to the EVM. If there
are questions concerning the input range, please contact a TI field representative prior to connecting the input
power.
During normal operation, some circuit components may have case temperatures greater than 30°C The EVM is designed
to operate properly with certain components above 85°C as long as the input and output ranges are maintained. These
components include but are not limited to linear
regulators, switching transistors, pass transistors, and current sense resistors. These types of devices can be identified
using the EVM schematic located in the EVM Users Guide. When placing measurement probes near these devices during
operation, please be aware that these devices may be very warm to the touch.
Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas75265
Copyright ; 2009, Texas Instruments Incorporated
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