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Texas Instruments AMC130x Evaluation Module (Rev. C) User guides
(1)
User's Guide
SBAU256C – May 2016 – Revised June 2018
AMC130x Evaluation Module
This user's guide describes the characteristics, operation, and use of the AMC130xEVM. This evaluation
module (EVM) is an evaluation and development kit for evaluating the AMC1300 or AMC1301, precision
isolation amplifiers. A complete circuit description as well as schematic diagram and bill of materials are
included.
The following related documents are available through the Texas Instruments web site at www.ti.com.
Related Documentation
1
2
3
4
5
Device
Literature Number
AMC1300
SBAS895
AMC1301
SBAS667
AMC1302
SBAS812
SN6501
SLLSEA0
Contents
EVM Overview ...............................................................................................................
Analog Interface..............................................................................................................
Power Supplies ..............................................................................................................
EVM Operation ...............................................................................................................
Layout, BOM, and Schematic ..............................................................................................
2
2
3
4
5
List of Figures
1
AMC130xEVM Schematic: Analog Input Section........................................................................ 2
2
AMC130xEVM Schematic: Analog Output Section
3
VDD1 Input ................................................................................................................... 3
4
VDD2 Input Connector ...................................................................................................... 3
5
AMC130x Top Layer Silkscreen ........................................................................................... 5
6
AMC130xEVM Schematic .................................................................................................. 7
.....................................................................
3
List of Tables
1
J1: Analog Inputs ............................................................................................................ 4
2
J2: Isolated Power ........................................................................................................... 4
3
J3: VDD2 Power ............................................................................................................. 4
4
J4: Analog Output
5
(1)
...........................................................................................................
AMC130xEVM Bill of Materials ............................................................................................
4
6
All trademarks are the property of their respective owners.
SBAU256C – May 2016 – Revised June 2018
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1
EVM Overview
1
EVM Overview
1.1
Features
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This EVM supports the following features:
• Full-featured evaluation board for the AMC1300, AMC1301, or AMC1302 single-channel precision
isolation amplifier
• Screw terminals for easy access to analog inputs and outputs
• Optional isolated power to VDD1 from VDD2
1.2
Introduction
The AMC1300, AMC1301, and AMC1302 are precision isolation amplifiers with an output separated from
the input circuitry by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This
barrier has been certified to provide basic galvanic isolation of up to 7000 VPEAK according to UL1577 and
IEC60747-5-2 specifications.
For use in high-resolution measurement applications, the input of the AMC1300, AMC1301, and AMC1302
is optimized for direct connection to shunt resistors or other low-level signal sources.
Throughout this document, the abbreviation EVM and the term evaluation module are synonymous with
the AMC130xEVM.
2
Analog Interface
The analog inputs to the AMC1300, AMC1301, and AMC1302 are routed from the two-wire screw terminal
at J1. These screw terminals provide access to the inverting and noninverting inputs of the AMC130x
device installed at U2.
2.1
Analog Inputs
The analog inputs to the AMC130xEVM printed-circuit board (PCB) consists of optional RC filter circuit. By
default, R1 and R2 on the analog input are populated as 0-Ω resistors. Capacitors C4, C5, and C8 are not
installed. An example input circuit for the AMC130x is shown in Figure 1.
R2
J1
1
2
+IN
0
C8
DNP
R1
-IN
0
C4
C5
DNP
DNP
isoGND
Figure 1. AMC130xEVM Schematic: Analog Input Section
2
AMC130x Evaluation Module
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Analog Interface
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2.2
Analog Outputs
The analog outputs from the AMC130xEVM board are fully-differential signals centered at VDD2 / 2. The
outputs are available on the two screw terminals of J4, as Figure 2 shows.
J4
7
VOUT+
1
6
2
VOUT-
Figure 2. AMC130xEVM Schematic: Analog Output Section
3
Power Supplies
The AMC130xEVM require two separate power rails, VDD1 and VDD2. VDD1 is on the high voltage side
of the amplifier. VDD2 is on the user side of the amplifier.
3.1
VDD1 Input
J2 provides access to the to the VDD1 supply. For power provided from high-side isolated rails (such as
from a gate-drive supply), move the shunt on jumper JP1 to cover pins 1 and 2. Use a voltage between
4.5 VDC and 5.5 VDC for the user-applied VDD1 supply. In the EVM default configuration, VDD1 is
provided from VDD2 by means of an isolation transformer and U3, an SN6501 transformer driver. In the
default configuration, apply 5 V to VDD2 through J3. The input power is shown in Figure 3.
5Viso
VDD1
2
VDD2
J2
J3
JP1
2
1
1
2
1
3
C11
C1
10µF
4.7µF
DGND
isoGND
VDD2
D1
U1
5
OUT
C2
22µF
IN
NC
2
GND
EN
1
8
4
C3
3
0.1µF
T1
VDD2
C10
1µF
4
C6
7
3
6
2
U3
1
22µF
TPS76350DBV
2
D2
isoGND isoGND
5
isoGND
1
DA2303-ALB
isoGND
3
D1
GND
4
VCC
D2
GND
5
SN6501DBV
DGND
Figure 3. VDD1 Input
3.2
VDD2 Input
The user side of the AMC1300, AMC1301, and AMC1302 isolation amplifier is rated for 2.7 VDC to 5.5 VDC
and is applied to the amplifier using J3. Figure 4 illustrates the power input for VDD2.
VDD2
J3
2
1
C11
10µF
DGND
Figure 4. VDD2 Input Connector
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3
EVM Operation
4
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EVM Operation
This section describes the general operation of the AMC130xEVM.
4.1
Isolated Power and Analog Inputs: J1 and J2
The analog input to the AMC130xEVM board can be applied directly to J1 pins 1 and 2.
CAUTION
For the limitations of the analog input range, and to ensure that the appropriate
analog and digital voltages are applied before connecting any analog input to
the EVM, see AMC1301 Fully-Differential Isolation Amplifier.
Table 1 summarizes the details of J1.
Table 1. J1: Analog Inputs
Pin Number
Signal
J1.1
IN+
Description
Noninverting input to the AMC1300, AMC1301, or
AMC1302 (pin 2)
J1.2
IN–
Inverting analog input to the AMC1300, AMC1301, or
AMC1302 (pin 3)
The isolated power input to the AMC130xEVM PCB can be applied directly to J2, pins 1 and 2. Table 2
lists the details of J2.
Table 2. J2: Isolated Power
4.2
Pin Number
Signal
Description
J2.1
GND1
Connection to the AMC1300, AMC1301, or AMC1302
GND1 terminal (pin 4)
J2.2
VDD1
Connection to the AMC1300, AMC1301, or AMC1302
VDD1 terminal (pin 1)
User Power and Analog Output: J3 and J4
The VDD2 power input to the AMC130xEVM PCB can be applied directly to J3, pins 1 and 2. Table 3 lists
the details of J3.
Table 3. J3: VDD2 Power
Pin Number
Signal
Description
J3.1
GND2
Connection to the AMC1300, AMC1301, or AMC1302
GND2 terminal (pin 5)
J3.2
VDD2
Connection to the AMC1300, AMC1301, or AMC1302
VDD2 terminal (pin 8)
The analog output from the AMC130xEVM board is applied directly to J4, pins 1 and 2. Table 4
summarizes the details of J4.
Table 4. J4: Analog Output
4
Pin Number
Signal
Description
J4.1
VOUT–
Inverting analog output from the AMC1300, AMC1301, or
AMC1302 (pin 7)
J4.2
VOUT+
Noninverting output from the AMC1300, AMC1301, or
AMC1302
(pin 6)
AMC130x Evaluation Module
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EVM Operation
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4.3
Device Operation
After the VDD1 and VDD2 power is applied to the AMC130xEVM, the analog outputs are available with a
fixed gain and a dc offset equal to 1.44 V.
An analog input signal may be applied directly at screw terminal J2. Refer to Figure 1 and Table 1 for
details. For the AMC1300EVM and AMC1301EVM the differential analog input range, (VIN+) – (VIN–), is
specified at ±250 mV with a maximum of ±320 mV before clipping occurs.
The analog output has a nominal gain of 8 through the AMC1300 or AMC1301 isolation amplifier. With an
input voltage of ±250 mV, the nominal output is therefore ±2.0 V.
For the AMC1302EVM, the differential analog input range is specified at ±50 mV with a maximum of
±64 mV with a fixed gain of 41 V/V. With an input voltage of ±50 mV, the nominal output is also ±2.0 V.
The output voltage of the AMC130xEVM is centered on VDD / 2 and provides a convenient analog input
range to the embedded analog-to-digital converters (ADCs) of the MSP430 and TMS320C2000 series of
digital processors.
5
Layout, BOM, and Schematic
This sections contains the PCB layout, bill of materials, and schematic of the AMC130xEVM.
5.1
Layout
Figure 5 shows the AMC130xEVM PCB layout.
NOTE: Board layout is not to scale. This figure is intended to show how the board is laid out; it is not
intended to be used for manufacturing AMC130xEVM PCBs.
Copyright © 2017, Texas Instruments Incorporated
Figure 5. AMC130x Top Layer Silkscreen
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5
Layout, BOM, and Schematic
5.2
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Bill of Material
The bills of material is listed in Table 5.
NOTE: All components should be RoHS compliant. Some part numbers may be either leaded or
RoHS. Verify that purchased components are RoHS compliant.
Table 5. AMC130xEVM Bill of Materials
6
Item
Qty
Ref Des
1
1
C1
2
2
C2, C6
3
3
C3, C7, C9
4
1
C10
5
1
C11
6
2
D1, D2
7
4
8
1
JP1
Description
Manufacturer
Part Number
CAP, CERM, 4.7uF, 50V, +/-10%, X5R, 0805
TDK
C2012X5R1H475K125AB
CAP, CERM, 22uF, 6.3V, +/-20%, X5R, 0805
Taiyo Yuden
CAP, CERM, 0.1uF, 25V, +/-10%, X7R, 0603
TDK
C1608X7R1E104K
CAP, CERM, 1uF, 16V, +/-10%, X5R, 0603
TDK
C1608X5R1C105K
CAP, CERM, 10uF, 10V, +/-10%, X5R, 0805
Murata
Diode, Schottky, 20V, 0.5A, SOD-123
ON
Semiconductor
J1, J2, J3, J4 Terminal Block, 6A, 3.5mm Pitch, 2-Pos, TH
3x1 2mm male header
RES, 0 ohm, 5%, 0.1W, 0603
On-Shore
Technology
JMK212BJ226MG-T
GRM219R61A106KE44D
MBR0520LT1G
ED555/2DS
Samtec
TMM-103-01-T-S
Rohm
MCR03EZPJ000
9
2
R1, R2
10
1
T1
Isolation Transformer
11
1
U1
TPS76350DBV
TI
TPS76350DBV
12
1
U2
AMC1300BDWV or AMC1301BDWV
TI
AMC1300BDWV or
AMC1301BDWV
13
1
U3
SN6501DBV
TI
SN6501DBV
14
0
C4, C5
DNP - Optional CAP, CERM, 10pF, 50V, +/5%, C0G/NP0, 0603
15
0
C8
DNP - Optional CAP, CERM, 330pF, 50V, +/5%, C0G/NP0, 0603
16
1
N/A
Shunt
AMC130x Evaluation Module
Coilcraft
DA2303-ALB
AVX
06035A100JAT2A
TDK
C1608C0G1H331J
Samtec
2SN-BK-G
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Layout, BOM, and Schematic
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5.3
Schematic
Figure 6 shows the AMC130xEVM schematic.
1
2
3
A
4
5
6
A
5Viso
VDD1
2
VDD2
J3
JP1
J2
2
1
1
2
1
3
C11
C1
10µF
4.7µF
DGND
isoGND
VDD2
D1
U1
5
OUT
IN
C2
22µF
NC
2
GND
EN
1
4
3
8
C3
T1
VDD2
C10
C6
0.1µF
7
3
6
2
U3
1
22µF
TPS76350DBV
D1
2
5
isoGND
3
1
DA2303-ALB
GND
D2
GND
DGND
5Viso
VDD2
0.1µF
C9
1
J1
1
2
0
R1
2
C8
3
DNP
4
0
C
C4
C5
DNP
DNP
VDD1
VDD2
VINP
VOUTP
VINN
VOUTN
GND1
0.1µF
DGND
U2
isoGND
R2
B
5
SN6501DBV
isoGND
C7
4
VCC
D2
isoGND isoGND
B
1µF
4
GND2
8
J4
7
2
1
6
5
AMC1301DWVR
C
isoGND
DGND
isoGND
D
D
Texas Instruments and/or its licensors do not warrant
curacy
the ac
or completeness of this specification or any tion
informa
contained therein. Texas Instruments and/or its
sors
licen
do not
warrant that this design will meet the specifications,
be suitable
will
for your application or fit for any particular
rpose, pu
or will operate in an implementation. Texas Instrume
nts and/or its
licensors do not warrant that the design is production
y. You
worth
should completely validate and test your design
mentation
imple to confirm the system functionality for your
icatio
appl
1
2
3
4
Designed for:Public Release
Mod. Date: 2/25/2016
Project Title: AMC1301EVM
Number: PA0023
Rev: E1 Sheet Title:
SVN Rev: Version control disabled Assembly Variant:[No Variations]
Sheet:1 of 1
Drawn By:
File: PA023_AMC1301_sch_A.SchDoc
Size: B
Engineer: Tom Hendrick
Contact: http://www.ti.com/support
5
http://www.ti.com
© Texas Instruments 2016
6
Copyright © 2016, Texas Instruments Incorporated
Figure 6. AMC130xEVM Schematic
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7
Revision History
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Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from B Revision (May 2018) to C Revision ...................................................................................................... Page
•
•
Added AMC1302 device to user's guide ............................................................................................... 1
Changed Device Operation section to differentiate between the AMC1300EVM and AMC1301EVM functionality and the
AMC1302EVM functionality .............................................................................................................. 5
Revision History
Changes from A Revision (August 2016) to B Revision ................................................................................................ Page
•
•
Changed user's guide title from AMC1301EVM to AMC130xEVM to include additional devices .............................. 1
Added AMC1300 device to user's guide ............................................................................................... 1
Revision History
Changes from Original (May 2016) to A Revision ........................................................................................................... Page
•
8
Changed dc offset statement in first paragraph of the Device Operation section ................................................ 5
Revision History
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