Texas Instruments Computer Accessories MSOP8 User Manual

Modular MSOP8 EVM  
User’s Guide  
September 2003  
Data Acquisition  
SLAU115  
 
EVM IMPORTANT NOTICE  
Texas Instruments (TI) provides the enclosed product(s) under the following conditions:  
This evaluation kit being sold by TI is intended for use for ENGINEERING DEVELOPMENT OR EVALUATION  
PURPOSES ONLY and is not considered by TI to be fit for commercial use. As such, the goods being provided  
may not be complete in terms of required design-, marketing-, and/or manufacturing-related protective  
considerations, including product safety measures typically found in the end product incorporating the goods.  
As a prototype, this product does not fall within the scope of the European Union directive on electromagnetic  
compatibility and therefore may not meet the technical requirements of the directive.  
Should this evaluation kit not meet the specifications indicated in the EVM Users Guide, the 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. Please be aware that the products  
received may not be regulatory compliant or agency certified (FCC, UL, CE, etc.). 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 EVM Users Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM  
Users Guide prior to handling the product. This notice contains important safety information about temperatures  
and voltages. For further safety concerns, please contact the TI application engineer.  
Persons handling the product must have electronics training and observe good laboratory practice standards.  
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.  
Mailing Address:  
Texas Instruments  
Post Office Box 655303  
Dallas, Texas 75265  
Copyright 2003, Texas Instruments Incorporated  
 
EVM WARNINGS AND RESTRICTIONS  
It is important to operate this EVM within the input voltage range of 1.8 VDC to 5 VDC and the  
output voltage range of 0 VDC and 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.  
Applying loads outside of the specified output range may result in unintended operation and/or  
possible permanent damage to the EVM. Please consult the EVM Users Guide prior to  
connecting any load to the EVM output. If there is uncertainty as to the load specification,  
please contact a TI field representative.  
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, Texas 75265  
Copyright 2003, Texas Instruments Incorporated  
 
Preface  
Read This First  
About This Manual  
This users 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 1EVM Overview  
Chapter 2Analog Interface  
Chapter 3Digital Interface  
Chapter 4Power Supplies  
Chapter 5EVM Operation  
Chapter 6EVM 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.  
-3  
 
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  
EVM Compatible Device Data Sheets:  
Literature Number:  
SBAS110  
ADS7816  
ADS7817  
ADS7818  
ADS7822  
ADS7834  
ADS7835  
ADS8320  
ADS8321  
ADS8324  
ADS8325  
SBAS230  
SBAS078  
SBAS062  
SBAS098  
SBAS102  
SBAS108  
SBAS123  
SBAS172  
SBAS226  
Application Notes/Additional Literature:  
Op Amps for Everyone  
Literature Number:  
SLOD006  
5-6K Interface Board  
SLAU104  
Single and Bipolar Supply Signal Conditioning Boards  
SLAU105  
Third Party Tools:  
Vendor Website:  
HPA449 Development Board (MSP430 Tools)  
Speedy 33 (DSP Tools)  
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.  
-4  
 
Contents  
1
EVM Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1  
1.1  
1.2  
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2  
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2  
2
3
4
Analog Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1  
Digital Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1  
Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
4.1  
4.2  
4.3  
ADC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2  
Stand Alone Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2  
Reference Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2  
5
6
EVM Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1  
5.1  
5.2  
5.3  
5.4  
5.5  
Analog Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2  
Digital Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2  
Chip Select (Shut Down) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2  
Digital I/O Buffers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2  
Default Jumper Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2  
EVM BOM and Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1  
6.1  
EVM Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2  
Tables  
2-1  
3-1  
4-1  
5-1  
6-1  
Analog Interface Pin Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1  
Digital Interface Pin Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1  
Power Supply Pin Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1  
List of Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2  
Bill of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1  
-1  
 
-2  
 
Chapter 1  
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  
1-1  
 
Features  
1.1 Features  
Full-featured 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  
rd  
5-6K Interface Board (SLAU104) from Texas Instruments and additional 3  
party boards such as the HPA449 demonstration board from SoftBaugh, Inc.  
(www.softbaugh.com) and the Speedy33t from Hyperception, Inc.  
(www.hyperception.com).  
1-2  
 
Chapter 2  
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 1-800-SAMTEC-9 for a variety of mating connector  
options.  
Table 2-1.Analog Interface Pin Out  
Pin Number  
J1.2  
Signal  
AD_IN+  
AD_IN-  
Unused  
Unused  
Unused  
Unused  
Unused  
Unused  
REF(-)  
REF(+)  
Unused  
AGND  
Description  
Noninverting Input (Differential Devices)/Analog Input (Single Ended Devices)  
Inverting Input (Differential Devices)/Analog Ground (Single Ended Devices)  
J1.4  
J1.6  
J1.8  
J1.10  
J1.12  
J1.14  
J1.16  
J1.18  
J1.20  
J1.15  
Pins are unused and should be left open for use with future amplifier and sensor  
input modules.  
Unused  
External Reference Source Input (2.5V NOM, 2.525 MAX)  
J1.1- J1.19  
(odd)  
Analog ground connections (except J1.15)  
2-1  
 
2-2  
 
Chapter 3  
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  
or 1-800-SAMTEC-9 for a variety of mating connector options.  
Table 3-1.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  
J2.5  
J2.7  
SCLK  
SCLKR  
FS  
Serial Clock  
Serial Clock Return (for DSP Host systems)  
Frame Sync for DSP host systems alternate Chip Select through JMP2 (see  
schematic)  
J2.9  
FSR  
Frame Sync Return (for DSP Host systems)  
Serial Data Output  
J2.11  
J2.13  
J2.15  
J2.17  
J2.19  
Unused  
SDO  
Unused  
Unused  
SPARE  
3-1  
 
3-2  
 
Chapter 4  
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 4-1 shows the pin out of J3.  
Table 4-1.Power Supply Pin Out  
Signal  
Pin Number  
Signal  
Unused  
+5VA  
1
3
5
7
9
2
4
Unused  
Unused  
AGND  
+VD1  
DGND  
+1.8VD  
+3.3VD  
6
8
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  
4-1  
 
ADC Power  
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 1-2), 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 1-2), a 2.5 V reference is supplied by U2. Moving the shunt at  
JMP5 to positions 2-3 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 1-2), the  
reference source is the on board reference/buffer circuit. Moving the shunt on  
JMP6 to pins 2-3 allows the voltage applied to the ADC (+Vadc) to be used  
as the reference source.  
4-2  
 
Chapter 5  
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  
5-1  
 
Analog Input  
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 HPA449. 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 1-2 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 2-3, 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 5-1 provides a list of jumpers found on the EVM and their factory default  
conditions.  
Table 5-1.List of Jumpers  
Jumper  
JMP1  
JMP2  
JMP3  
JMP4  
JMP5  
JMP6  
Shunt Position  
Pins 1-2  
Jumper Description  
Controls ADC Supply Voltage (default is +5Va Source)  
Controls ADC /CS(SHDN) Pin (default is FS from DSP Host)  
Controls Digital I/O Voltage (default is +3.3Vd Source)  
Ties ANALOG and DIGITAL grounds together  
Pins 1-2  
Pins 5-6  
CLOSED  
Pins 1-2  
Controls External Ref. Source (default is +2.5V from U2)  
Pins 1-2  
Controls REFERENCE Source to ADC (default is onboard reference/buffer  
circuit)  
5-2  
 
Chapter 6  
EVM BOM and Schematic  
The following table contains a complete bill of materials for the modular  
MSOP8 EVM bill of materials.  
Table 6-1.Bill of Materials  
Designators  
C2 C3 C4 C13  
Description  
Manufacturer  
Mfg. Part Number  
Not Installed  
Not Installed  
R11  
C1  
0.47 µF, 0805, ceramic, X7R, 25 V, 10%  
0.1 µF, 0805, ceramic, X7R, 50 V, 10%  
10 µF, 1206, ceramic, Y5V, 10 V, 10%  
10 µF, A case, tantalum, 10 V  
15 µH inductor, SMT, 1608 Series  
10 Pin, dual row, SMT header (20 [postive)  
10 Pin, dual row, SMT socket (20 positive)  
5 Pin, dual row, SMT socket (10 posotove)  
33 , 0805, 5%, .1W Resistor  
0 , 0805, 0.1 W resistor  
Panasonic  
Panasonic  
Panasonic  
Panasonic  
Inductors, Inc.  
Samtec  
ECJ-2YB1C474K  
C11 C12 C14  
C6 C8 C10  
C5 C14 C15  
L1 L2 L3  
ECJ-2YB1H104K  
ECJ-3YF1A106Z  
ECS-T1AY106R  
CTDS1608C-153  
TSM-110-01-T-DV-P  
SSW-110-22-F-D-VS-K  
SSW-105-22-F-D-VS-K  
9C08052A33R0JLHFT  
9C08052A0R00JLHFT  
5001  
J1 J2 (top side)  
J1B J2B (bottom side)  
J3 (bottom side)  
R9 R10 R12  
R1 R2 R3 R4 R6  
TP1 TP2 TP3 TP5 TP7  
TP4 TP6  
Samtec  
Samtec  
Yageo America  
Yageo America  
Keystone  
Red test point loop  
Black test point loop  
Keystone  
5000  
U1  
Varies (see Note)  
U2  
REF3025  
TI  
REF3025AIDBZT  
SN74LVC1G125DBVT  
OPA353NA/250  
U3 U5 U6  
SN74LVC1G125  
TI  
U4  
OPA353N  
TI  
JMP1 JMP2 JMP5  
JMP6  
3 Pin , 2 mm header  
Samtec  
TMMH-103-C-S-T  
JMP3  
4 Pin, dual row, TH header (8 positive)  
Samtec  
TSW-104-07-L-D  
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.  
Topic  
Page  
6.1 EVM Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2  
6-1  
 
EVM Schematic  
6.1 EVM Schematic  
The schematic diagram is provided as a reference.  
6-2  
 
1
2
3
4
Revision History  
REV  
B
ECN Number  
Initial Release  
Approved  
TH  
+5Va  
C1  
0.47uF  
D
C
B
A
D
C
B
A
+5Va  
+LVa  
U2  
VIN  
+5Va  
JMP1  
1
C11  
0.1uF  
2
OUT  
J2  
3
+V(adc)  
R6  
GND  
1
2
4
6
8
10  
U4  
JMP5  
3
4
SCLK  
3
5
7
9
JMP6  
R12  
33  
R9 33  
REF3025  
1
JMP2  
R10 33  
SDO  
C10  
10uF  
VREF  
OPA353N  
11 12  
13 14  
15 16  
17 18  
19 20  
0 ohm  
/CS  
C6  
10uF  
C8  
10uF  
+V(i/o)  
+V(i/o)  
C2  
NI  
R11  
NI  
C12  
0.1uF  
U1  
U3  
R4  
R2  
2
3
IN+  
IN-  
TP2  
0 ohm  
0 ohm  
J1  
AD_IN+  
AD_IN-  
1
2
4
6
8
10  
6
C4  
NI  
SDO  
SDO  
3
5
7
9
R1  
R3  
SN74LVC1G125  
C13  
NI  
0 ohm  
0 ohm  
11 12  
13 14  
15 16  
17 18  
19 20  
C3  
NI  
REF-  
REF+  
+V(i/o)  
JMP4  
U5  
TP7  
+LVa  
+V(i/o)  
+
/CS  
SN74LVC1G125  
L3  
L1  
15uF  
TP1  
15uF  
C15  
10uF  
+
C5  
10uF  
+V(i/o)  
+5Va  
J3  
L2  
TP5  
1
2
4
6
8
10  
U6  
3
5
7
9
DGND  
AGND  
15uF  
TP6  
TP4  
+
C14  
10uF  
SCLK  
SN74LVC1G125  
JMP3  
ti  
DATE:  
TP3  
12500 TI Blvd. Dallas, Texas 75243  
+VD1  
+5Vd  
+3.3Vd  
+1.8Vd  
Title:  
ADSMSOP8 Evaluation Module  
Schematic  
Drawn By:  
Tom Hendrick  
Engineer:  
FILE:  
SIZE:  
REV:  
B
31-Jul-2003  
Tom Hendrick  
B
SHEET:  
OF:  
EDGE #6450847  
1
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