TLC3578EVM Family
User’s Guide
August 2003
Data Acquisition−Digital/Analog Converters
SLAU110
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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 User’s 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 user’s 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 User’s Guide and, specifically, the EVM Warnings and Restrictions notice in the EVM
User’s 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
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EVM WARNINGS AND RESTRICTIONS
It is important to operate this EVM within the input voltage range of ꢀ15 V.
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 User’s 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
60°C. The EVM is designed to operate properly with certain components above 60°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 User’s 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
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Preface
Read This First
About This Manual
This user’s guide describes the characteristics, operation, and use of
the following evaluation boards:
- TLC3578 EVM Bipolar-Input, 8-channel 14-bit serial analog-to-digital
converter
- TLC3574 EVM Bipolar-Input, 4-channel 14-bit serial analog-to-digital
converter
- TLC3548 EVM Unipolar-Input, 8-channel 14-bit serial analog-to-digital
converter
- TLC3544 EVM Unipolar-Input, 4-channel 14-bit serial analog-to-digital
converter
- TLC2578 EVM Bipolar-Input, 8-channel 12-bit serial analog-to-digital
converter
- TLC2574 EVM Bipolar-Input, 4-channel 12-bit serial analog-to-digital
converter
A complete circuit description as well as schematic diagram and bill of
materials is included. Contact the Product Information Center or e-mail
[email protected] for questions regarding this EVM.
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 Supply
- Chapter 5—Getting the Most From Your EVM
- Chapter 6—Bill of Materials, Board Layouts, and Schematic
v
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Trademarks
FCC Warning
This equipment is intended for use in a laboratory test environment only. It
generates, 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
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.
Trademarks
TI logo is a trademark of Texas Instruments.
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, please identify
this booklet by its title and literature number. Updated documents can also be
Data Sheets
TLC3578
TLC3574
TLC2578
TLC2574
TLC3548
TLC3544
OPA132
Literature Number
SLAS262
SLAS266
PDS1309
SBVS032
REF3040
REF3033
vi
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Contents
1
2
EVM Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
1.1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Analog Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2.1
2.2
2.3
2.4
2.5
2.6
Analog Interface Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Signal Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Single Supply Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Physical Pinout Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Reference Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
3
Digital Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.1 Physical Pinout Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
4
5
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Getting the Most From Your EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
5.1
Additional Hardware Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.1.1 Stand-Alone EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.1.2 DSP Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.1.3 MSP430 Microcontroller interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
6
Bill of Materials, Board Layouts, and Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
6.1
6.2
6.3
Bill of Materials for EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Board Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
EVM Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
vii
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Figures
2−1
5−1
5−2
6−1
6−2
6−3
6−4
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
EVM Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
DSK-To-EVM Stackup Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Top Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Internal Plane 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Internal Plane 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Bottom Layer (Mirrored) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Tables
2−1
2−2
2−3
3−1
4−1
Analog Input Pinout Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
ADC Reference Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Digital Signal Pinout Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Power Connector Pinout Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
viii
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Chapter 1
EVM Overview
Each evaluation board is based on the equivalent ADC. All ADCs use a
synchronous serial interface which can be simply interfaced to many micro-
controllers using the SPI protocol.
Each EVM also incorporates a stable voltage reference, and operational
amplifier to ensure a low-noise voltage reference for the ADC.
Topic
Page
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1-1
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Features
1.1 Features
- Evaluation board featuring one of the following:
J
J
J
J
J
J
TLC3578 ADC (order TLC3578 EVM)
TLC3574 ADC (order TLC3574 EVM)
TLC3548 ADC (order TLC3548 EVM)
TLC3544 ADC (order TLC3544 EVM)
TLC2578 ADC (order TLC2578 EVM)
TLC2574 ADC (order TLC2574 EVM)
- Onboard reference, with recommended buffer circuitry
- Suggested signal conditioning circuitry for 1 channel only
1-2
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Chapter 2
Analog Interface
Topic
Page
2.1 Analog Interface Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.2 Signal Conditioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.3 Single Supply Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.4 Physical Pinout Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.5 ADC Reference Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2.6 Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
2-1
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Analog Interface Block Diagram
2.1 Analog Interface Block Diagram
Figure 2−1. Block Diagram
Signal
P1 / J1
Conditioning
TLC3578
TLC3574
TLC3548
TLC3544
TLC2578
TLC2574
The channels are arranged to comply with the EVM standard developed for
data converters. This standard defines eight channels of analog I/O on each
EVM module.
2.2 Signal Conditioning
The facility exists for the signal connected to channel 0 to be conditioned via
an operational amplifier. The amplifier present on the EVM operates from a
dual power supply and is configured with a gain of +1.
If signal conditioning is not required, it can easily be bypassed via a shorting
bar.
2.3 Single Supply Operation
Should the user wish to operate the amplifier from a single suply rail, this is also
possible by simply removing the dual supply amplifier and replacing it with a
suitable single supply alternative, for example the OPA353.
The suggested procedure is detailed below:
- Carefully desolder amplifier, U1
- Replace with a suitable single-supply alternative, for example TI part num-
ber OPA353UA
- Install appropriate resistor at R9
- Install appropriate capacitor at C11
- Install shorting bar at W1
2-2
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Physical Pinout Description
2.4 Physical Pinout Description
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 P1. This
header/socket provides access to the analog input pins of the TLV2553/6.
mating connector options.
Table 2−1.Analog Input Pinout Description
Pin Number
Signal
Description
Header
P1.2
Socket
J1.2
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
REF−
REF+
Channel 0 input, can be direct from P1/J1 connector or through Op-Amp
Channel 1 input, direct from P1/J1 connector
Channel 2 input, direct from P1/J1 connector
Channel 3 input, direct from P1/J1 connector
Channel 4 input, direct from P1/J1 connector
Channel 5 input, direct from P1/J1 connector
Channel 6 input, direct from P1/J1 connector
Channel 7 input, direct from P1/J1 connector
External Reference negative input
P1.4
J1.4
P1.6
J1.6
P1.8
J1.8
P1.10
P1.12
P1.14
P1.16
P1.18
P1.20
J1.10
J1.12
J1.14
J1.16
J1.18
J1.20
External Reference positive input
2.5 Reference Voltage
The accuracy of conversion from a SAR ADC depends directly upon the
accuracy of the reference voltage. It is very important, therefore, that the
reference be stable, accurate and low drift.
The ADC reference pin presents a dynamic capacitive load to the amplifier.
The voltage supplied to the ADC must be capable of driving this dynamic load
properly, ensuring that the reference remain stable regardless of load.
The bipolar and unipolar devices are specified to use a different voltage for the
reference pin.
Table 2−2.ADC Reference Voltage
ADC
Reference Voltage
Bipolar input
TLC3578
3.3 V
3.3 V
3.3 V
3.3 V
TLC3574
TLC2578
TLC2574
Unipolar input
TLC3548
4.096 V
4.096 V
TLC3544
Analog Interface
2-3
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Configuration Options
2.6 Configuration Options
There are a number of options available via shorting jumpers. These are
detailed below:
Table 2−3.Jumper Settings
Factory Set
Condition
Position
Optional Position
2−3
Reference
Designator
Description
1−2
W1
W2
W3
W4
W5
W6
W7
W8
W9
W10
Single supply operation
Not installed
Select negative supply for op amp
Select positive supply for op amp
Select signal source for channel 0
Select positive voltage reference
Select digital power
−Vs
AGND (0 V)
+Vs
+Vcc (5 V)
Signal is via op amp
Onboard reference
5 V
Signal is directly from P1.2
Reference via P1.18
3.3 V
Select negative voltage reference
CSTART, initiate manual conversion
FS mode
Onboard reference
Disabled
Reference via P1.20
Enabled
Disabled
Enabled
Device always selected
Disabled
Enabled
2-4
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Chapter 3
Digital Interface
The digital interface for the EVM is simply the appropriate digital signals from
the ADC routed and presented to the 20-pin digital interface connector.
Topic
Page
3.1 Physical Pinout Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3-1
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Physical Pinout Description
3.1 Physical Pinout Description
The EVM is designed for easy interfacing to multiple 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.
This header/socket combination provides access to the digital control and
1−800−SAMTEC−9 for a variety of mating connector options.
Table 3−1.Digital Signal Pinout Description
Pin Number
Header Socket
Signal
Description
P3.1
J3.1
CS
Chip select selects the device for data transfer.
Data transfer clock
P3.3
J3.3
SCLK/CLKX
Reserved
FSX
P3.5
J3.5
P3.7
J3.7
P3.9
J3.9
FSR
P3.11
P3.13
P3.15
P3.17
P3.19
J3.11
J3.13
J3.15
J3.17
J3.19
SDI
Serial data into the device
SDO
Serial data out of the device
†
EOC or INT/EOC
Reserved
CSTART
Selects either EOC or INT − see data sheet for details.
Control the beginning of a conversion
†
Programmable as either EOC or INT
3-2
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Chapter 4
Power Supply
The EVM accepts four power supplies.
- A dual ± Vs dc supply for the dual-supply op-amps.
- A single 5.0 V dc supply for the analog section of the ADC.
- A single 3.3 V to 5 V dc supply for the digital section of the ADC.
There are two ways to provide these voltages.
- Hook-up the test points on the EVM. The test points are clearly labeled
+Vdd (3.3 V to 5 V), +5VA, +Vs (up to 18 V depending upon the amplifiers)
and –Vs (up to –18 V depending upon the amplifiers).
- Use the power connector P5/J5 and derive the voltages elsewhere.
Table 4−1.Power Connector Pinout Description
Signal
P5/J5 Pin Number
Signal
−VA
+VA
1
3
5
7
9
2
4
6
8
+5VA
−5VA
DGND
VD1
AGND
+1.8VD
+3.3VD
10
+5VD
4-1
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4-2
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Chapter 5
Getting the Most From Your EVM
A wide range of prototyping options and software solutions are available from
TI, and offer additional flexibility, reducing your time-to-market. Hardware and
software offerings from TI help you easily get from concept to hardware and
software prototype.
Topic
Page
5.1 Additional Hardware Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5-1
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Additional Hardware Options
5.1 Additional Hardware Options
In general there are three hardware directions that the user can take with the
EVM.
5.1.1 Stand-Alone EVM
The EVM can be used on its own. Using the EVM in this manner obliges the
user to provide a custom digital interface between the EVM and a host system.
Users are entirely responsible for ensuring proper timing requirements are met
in addition to providing any glue logic necessary. Users must also provide the
necessary analog interface and supply power to the EVM.
5.1.2 DSP Interface
Depending upon the DSP that the user chooses, there are a number of TI
DSKs available. DSKs are DSP Starter Kits, and provide users with a DSP
starter system. They contain all the necessary hardware and software to
quickly begin prototype construction.
For example, the TMS320C6711 DSP starter kit includes the DSK hardware,
a parallel port cable to connect to a PC, a 5-V universal power supply, and a
Code Composer Studio CD-ROM containing all the necessary software.
Each family of DSKs provides different physical interface options. These
interface options enable address, data, and control signals to be decoded and
used by mezzanine-level cards (such as EVMs).
To connect this EVM to any DSK requires selection of the correct interface
card. Generally the procedure is outlined below.
- Select the DSP you wish to use.
- Select the appropriate DSK.
- Select the suitable interface card.
As an example, assume that the user wishes to use the TLC3578 EVM with
the TMS320C6711 DSP, the steps that should be taken are shown below
following a side-elevation of the boards required.
5-2
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Additional Hardware Options
Figure 5−1. EVM Selection
TMS320C2000
Interface Card
TLC3574 EVM
TMS320C3000
Interface Card
TMS320C6711
DSP
TMS320C6711
DSK
TLC3578 EVM
TLC3544 EVM
TMS320C5K / 6K
Interface Card
TLC3548 EVM
TLC3578 EVM
TLC3574 EVM
1. Select DSP
2. Select DSK
3. Select Interface Card.
Figure 5−2. DSK-To-EVM Stackup Diagram
C5K / 6K
Interface Card
Evaluation Module Site
Amplifier Site
C5K / 6K
Interface Card
DSK
80-Pin DSK Common Connector
5.1.3 MSP430 Microcontroller interface
TI also offer a range of low-power microcontrollers that have an SPI
interface. You can check-out these devices and order evaluation
modules at www.ti.com
A microcomputer evaluation board exists, featuring the MSP430F449
that also enables the ADC EVMs to be connected directly.
The HPA449 evaluation board, available from Softbaugh
www.softbaugh.com includes the following features:
Getting the Most From Your EVM
5-3
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5-4
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Chapter 6
Bill of Materials, Board Layouts, and
Schematic
This chapter contains the EVM bill of materials, board layouts and schematics.
Topic
Page
6.1 Bill of Materials for EVM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.2 Board Layouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6.3 EVM Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6-1
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Bill of Materials for EVM
6.1 Bill of Materials for EVM
Item
no.
1
Qty
1
Value
0R
Ref Des
R19
Description
Vendor
Part number
Resistor, 0−Ω 1/16 W 5% Panasonic
0402 SMD
Resistor, 0−Ω 1/8 W 5%
1206 SMD
Resistor 10−Ω 1/8 W 5%
1206 SMD
ERJ−2GE0R00X
ERJ−8GEY0R00V
ERJ−8GEYJ100V
ERJ−8GEYJ330V
2
3
4
2
0R
R8, R17
R15
Panasonic
Panasonic
1
10R
33R
9
R1, R2, R3,
R4, R5, R6,
R7, R12, R13
R10, R11,
R20, R21
R16, R18
Resistor, 33−Ω 1/8 W 5% Panasonic
1206 SMD
5
6
7
8
4
2
1
8
100R
10 KΩ
10 pF
0.1 µF
Resistor, 100−Ω 1/8 W 5% Panasonic
1206 SMD
Resistor, 10−kΩ, 1/8 W
5% 1206 SMD
Capacitor, 10−pF 50 V
Ceramic chip, 0805 SMD
ERJ−8GEYJ101V
ERJ−8GEYJ103V
ECJ−2VC1H100D
ECJ−2VB1E104K
Panasonic
Panasonic
Panasonic
C3
C1, C13, C15, Capacitor, .1−µF 25 V
C16, C20,
C22, C23,
C24
Ceramic, X7R 0805
9
8
27 nF
C4, C5, C6,
C7, C8, C9,
C10, C14
C18
Capacitor, 27000−pF 50 V, Panasonic
Ceramic, X7R 0805
ECJ−2VB1H273K
10
11
12
1
1
4
1 µF
10 µF
10 µF
Capacitor, 1−ìF 10 V J
Ceramic X5R 0805
Capacitor, 10−µF 16 V
tantalum, TE series
Capacitor, 10−µF 16 V,
VS electrolytic, SMD
2−pin header
Panasonic
Panasonic
Panasonic
ECJ−2YB1A105K
ECS−T1CX106R
ECE−V1CA100SR
C17
C2 C12 C19
C21
W1, W10
W2, W3, W4, 3−Pin header
W5, W6, W7,
13
14
2
8
Samtec
Samtec
TSW−102−07−L−S
TSW−103−07−L−S
W8, W9
15
16
17
18
19
20
21
1
1
4
4
3
2
1
P5
J5
10−Pin header
Samtec
Samtec
Samtec
Samtec
Fair-Rite
TSM−105−01−T−DV−
P
SSW−105−22−F−D−
VS−K
TSM−110−01−T−DV−
P
SSW−110−22−F−D−
VS−K
2744044447
10−Socket strip
P1 P2 P3 P4 20−Pin header
J1 J2 J3 J4
20−Socket strip
FB1, FB2,
FB3
OPA132UA U1, U3
Fair−Rite SM beads
#24−−44447
IC, FET−input op amp,
8−SOIC
IC voltage reference,
3.33−V LP SOT−23
Texas
Instruments
Texas
OPA132UA
REF3033 U2
Instruments REF3033AIDBZT
Contingent on
Item 22
REF3040 U2
IC, voltage reference,
4.096−V, LP SOT−23
Texas
Instruments
REF3040AIDBZT
6-2
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Bill of Materials for EVM
22
1
Alternate
Alternate
Alternate
Alternate
Alternate
2
TLC3578
TLC3574
TLC3548
TLC3544
TLC2578
TLC2574
U4
U4
U4
U4
U4
U4
IC, A/D 8−CH, 14−BIT,
LP 24−TSSOP
IC, A/D, 4−Ch, 14−bit
LP 20−TSSOP
IC, Unipolar A/D 8−CH
24−SOIC
IC, Unipolar A/D 4−CH
20−SOIC
IC, Serial out A/D 8−CH
24−SOIC
IC, Serial out A/D 4−CH
20−TSSOP
Single IC buffer driver
with open drain o/p
TLC3578 Rev A PWB
Texas
Instruments
Texas
Instruments
Texas
Instruments
Texas
Instruments
Texas
Instruments
Texas
Instruments
Texas
Instruments
Texas
Instruments
Keystone
Electronics
Cambion
*
TLC3578IPW
TLC3574IPW
TLC3548IPW
TLC3544IPW
TLC2578IPW
TLC2574IPW
SN74LVC1G07DBVR
6448024
23
24
25
26
SN74LVC1 U5, U6
G07
1
4
TP_.025
+5VA, +VA,
−VA, Vdd
Test Point − Single .025”
Pin
5000
2
1
TP_turret AGND, DGND Turret terminal test point
180−7337−02−05
*
Not
Installed
Not
R14
C11
R9
*
*
*
1
1
*
*
*
*
Installed
Not
Installed
Bill of Materials, Board Layouts, and Schematic
6-3
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Board Layouts
6.2 Board Layouts
Figure 6−1. Top Layer
6-4
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Board Layouts
Figure 6−2. Internal Plane 1
Figure 6−3. Internal Plane 2
Bill of Materials, Board Layouts, and Schematic
6-5
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Board Layouts
Figure 6−4. Bottom Layer (Mirrored)
6-6
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EVM Schematic
6.3 EVM Schematic
The EVM schematic is a PDF attachment following this page.
Bill of Materials, Board Layouts, and Schematic
6-7
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1
2
3
4
5
6
Revision History
ECN Number
REV
Approved
D
C
B
A
D
C
B
A
P1
TLC3578
TLC3578.sch
P3
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
REF-
REF+
CS*
1
3
5
7
9
2
4
1
3
5
7
9
2
4
CLKX
6
6
R17
0R
FSX
8
8
FSR
10
12
14
16
18
20
10
12
14
16
18
20
DATA_IN
B_DATA_OUT
B_INT*/EOC
11
11
13
15
17
19
13
15
17
19
GPIO_1
DGND
AGND
PWR & REF
PWR & REF.sch
ti
6448025
12500 TI Boulevard. Dallas, Texas 75243
Title:
TLC3578 EVM Block Diagram
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2
3
4
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Revision History
ECN Number
REV
Approved
GPIO_1
FSX
DVdd
W10
FS
CS*
CSTART*
W8
DVdd
D
C
B
A
D
C
B
A
C11
W9
W1
R18
10K
R9
DGND
R16
10K
Not Installed
Not Installed
R8
0R
AGND
CH0
Amplifier +Supply
+5V_s
W4
R12
33R
DVdd
C14
27nF
2
U1
-In
6
Output
U4
DVdd
DVdd
CH0
3
+In
AGND
9
10
11
12
13
14
15
16
8
CS*
FS
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
CS*
FS
R20
100R
R21
100R
2
R13
Amplifier -Supply
1
BCLK
CLKX
SCLK
SDI
33R
3
DATA_IN
DATA_OUT
CSTART*
U6A
5
2
4
B_DATA_OUT
SDO
A
Y
R7
CH1
CH2
CH3
CH4
CH5
24
CSTART*
U5A
SN74LVC1G07
B_INT*/EOC
33R
R2
CH6
C10
27nF
4
INT*/EOC2
4
33R
INT* / EOC
A
Y
C5
27nF
AGND
SN74LVC1G07
19
REF_P
REF_M
REFP
AGND
R6
21
COMP
33R
R1
C9
CH7
20
REFM
27nF
33R
C20
TLC3578
C4
27nF
0.1uF
AGND
R5
AGND
33R
C8
27nF
AGND
DGND
AGND
R4
33R
C7
27nF
AGND
REF+
R3
W5
33R
REF_P
REF_M
C6
27nF
VREF+
REF-
C15
0.1uF
C18
1uF
+
C17
AGND
10uF
W7
ti
6448025
AGND
12500 TI Boulevard. Dallas, Texas 75243
TLC3578
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Revision History
ECN Number
REV
Approved
U5B
U6B
1
5
DVdd
1
5
DVdd
NC Vcc
NC Vcc
C23
C24
DGND3
DGND3
GND
GND
0.1uF
0.1uF
+5VA
D
C
B
A
D
C
B
A
SN74LVC1G07
SN74LVC1G07
FB3
FB2
+5VA
+5V_s
+V_s
C16
C19
10uF
+
W3
Amplifier +Supply
0.1uF
+VA
AGND
AGND
+VA
+3.3V_D
C13
C12
10uF
+
Vdd
0.1uF
W6
R15
10R
DVdd
P5
-VA
+5V_D
FB1
-VA
-V_s
C1
C2
10uF
W2
+
C22
C21
10uF
+
Amplifier -Supply
0.1uF
0.1uF
AGND
AGND
DGND
R11
R19
0R
100R
C3
R14
Not Installed
10pF
AGND
DGND
Amplifier +Supply
AGND
DGND
2
3
-In
U3
R10
U2
6
VREF+
Output
100R
+5V_s
1
2
IN
OUT
+In
3
GND
REF3040
P2
P4
Amplifier -Supply
1
2
4
1
2
4
AGND
3
3
5
6
5
6
7
8
7
8
9
10
12
14
16
18
20
9
10
12
14
16
18
20
11
13
15
17
19
11
13
15
17
19
ti
12500 TI Boulevard. Dallas, Texas 75243
TLC3578 EVM Power & Reference
Title:
Engineer:
Drawn By:
FILE:
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Joe Purvis
PWR & REF.sch
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REV:
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DATE:
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