User's Guide
SLLU122A – April 2010 – Revised July 2010
ISO1176T/35T/3086T Evaluation Module
This document describes the ISO1176T/35T/3086T Evaluation Module (EVM). It is used to evaluate the
ISO1176T PROFIBUS™ Transceiver, the ISO35T RS-485 Transceiver, or the ISO3086T RS-485
Transceiver. Because the devices are similar transceivers, and the printed-circuit board is the same for all
three EVMs, this manual can be used for all three devices.
The EVM can be used to evaluate device parameters while acting as a guide for board layout. The board
allows for the connection of 50-Ω coaxial cables via QuietZone connectors. It also provides easy
connection points for oscilloscope probes. Banana jacks are provided for connection of a dc power supply.
These features provide the designer with a tool for evaluation and the successful design of an
end-product.
1
2
Contents
Overview ..................................................................................................................... 2
Recommended Equipment ................................................................................................ 8
List of Figures
1
ISO1176T Device Pinout and Block Diagram ........................................................................... 3
2
ISO35T Device Pinout and Block Diagram .............................................................................. 3
3
ISO3086T Device Pinout and Block Diagram ........................................................................... 3
4
ISO1176T/35T/3086TEVM Board......................................................................................... 5
5
Point-to-Point Simplex Circuit ............................................................................................. 6
6
Parallel Terminated Simplex Circuit ...................................................................................... 6
7
Five-Node Multipoint Circuit ............................................................................................... 7
8
Two-Node Multipoint Circuit ............................................................................................... 7
9
EVM Configuration for Inducing a Ground Potential Difference Voltage Between Nodes
10
PCB Top Layer
11
12
13
........................
............................................................................................................
Silk Screen – Top Side ...................................................................................................
Signal Traces – Bottom Layer ...........................................................................................
Silkscreen – Bottom Layer ...............................................................................................
8
12
13
14
15
List of Tables
1
EVM Configuration Options for ISO1176T............................................................................... 8
2
EVM Configuration Options for ISO35T and ISO3086T ............................................................... 9
3
ISO1176TEVM Bill of Material ........................................................................................... 10
4
ISO35TEVM Bill of Materials ............................................................................................. 11
5
ISO3086TEVM Bill of Materials .......................................................................................... 11
SLLU122A – April 2010 – Revised July 2010
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
1
Overview
1
www.ti.com
Overview
This EVM allows for evaluation of either the ISO1176T PROFIBUS™ or ISO35T or ISO3086T RS-485
transceivers. The EVM comes with a single transceiver installed on the circuit board (U1), but any of the
three devices can be evaluated using this single printed-circuit board (PCB). The PCB also contains a
transformer and voltage regulator that is used to provide dc power to the right (bus) side of the device.
Because all three devices contain the output oscillator signals used to drive the transformer, any of the
three devices can be evaluated using this single PCB. Note that two different transformers and voltage
regulators can be installed on the PCB. One set is used to generate +3.3 Vdc for the ISO35T device,
which is specified for 3.3-Vdc operation. The other set is installed on the ISO1176TEVM and
ISO3086TEVM to generate +5-Vdc power required for those two devices. These three integrated circuits
(ISO1176T, ISO35T, and ISO3086T) all contain the integrated transformer driver and are footprint
compatible. The major difference is the +5-Vdc or +3.3-Vdc operation.
Care needs to be taken regarding the isolated power and ground, as this is an isolating device. Power and
ground for the Data/Control side of the device (pins D, R, DE, RE\, D1, and D2) can be completely
isolated from power and ground for the Bus side of the device (pins A, B, etc.). Although these devices are
designed to operate with an isolation voltage up to 4000 V, this PCB is not. To ensure user safety while
using the EVM, the PCB has been designed to support an isolation voltage of approximately 500 V. The
user must be careful when using the EVM to test isolation voltage.
Finally, the ISO1176TEVM allows half-duplex operation, whereas the ISO35T and ISO3086T are
full-duplex devices. The PCBs are configured for either half- or full-duplex operation in their as-shipped
configuration. Changes between configurations can easily be done using the notes provided on the
schematic. The EVMs allow the user to evaluate half-duplex point-to-point or multidrop (PROFIBUS)
systems, or multipoint (RS-485) applications using multiple EVMs.
The ISO1176T meets or exceeds the requirements of EN50170 and the ISO35T and ISO3086T meet or
exceed the requirements of TIA/EIA RS-485 while providing 4000 V of isolation between the Data/Control
and Bus sides of the device. Each device has specific features, such as receiver hysteresis, low bus
capacitance, and failsafe receiver output for bus open, short, or idle conditions. These devices also
support extremely fast data rates or 1 Mbps (ISO35T), 20 Mbps (ISO3086T), or 40 Mbps (ISO1176T).
These features all contribute to making the ISO1176T, ISO35T, or ISO3086T an excellent choice for use
in industrial and factory environments.
CAUTION
Note that although the device provides galvanic isolation of up to 4000 V, this
EVM cannot be used for isolation voltage testing. It is designed for the
examination of device operating parameters only and may be damaged if high
voltage (>500 V) is applied across the isolation barrier or if a voltage >5.5 V is
applied to any device pin.
The data sheet for three devices is available on the TI Web site. A pinout of each device and functional
block diagram are in Figure 1 through Figure 3.
PROFIBUS is a trademark of PROFIBUS Nutzerorganisation e V.
2
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
SLLU122A – April 2010 – Revised July 2010
Overview
www.ti.com
DW PACKAGE
(TOP VIEW)
function diagram
1
16
VCC2
D1
2
15
D2
GND 1
VCC1
3
14
GND 2
GND 2
4
13
B
RE
R
5
12
RE
6
11
A
GND 2
DE
7
10
ISODE
D
8
9
GND 2
R
D
1
OSC
2
13
GALVANIC ISOLATION
D1
D2
5
6
8
DE 7
12
10
B
A
ISODE
Figure 1. ISO1176T Device Pinout and Block Diagram
DW PACKAGE
(TOP VIEW)
GND 1
1
16
VCC2
2
15
GND 2
3
14
A
VCC1
4
13
R
RE
5
12
B
Z
6
11
Y
DE
D
7
10
GND 2
8
9
GND 2
D1
D2
R
RE
DE
D
2
OSC
GALVANIC ISOLATION
D1
D2
function diagram
1
3
4
5
6
14
13
12
11
A
B
Z
Y
Figure 2. ISO35T Device Pinout and Block Diagram
DW PACKAGE
(TOP VIEW)
1
16
VCC2
2
15
GND 2
GND 1
3
14
A
VCC1
4
13
R
RE
5
12
B
Z
6
11
Y
DE
D
7
10
GND 2
8
9
GND 2
D1
D2
R
RE
DE
D
2
OSC
GALVANIC ISOLATION
D1
D2
function diagram
1
3
4
5
6
14
13
12
11
A
B
Z
Y
Figure 3. ISO3086T Device Pinout and Block Diagram
1.1
PROFIBUS/RS-485
The TIA/EIA-485 (also known as RS-485) standard was created in response to a demand from the data
communications community for a general-purpose, high-speed balanced interface standard for multipoint
applications. The standard, Electrical Characteristics of Generators and Receivers for Use in Balanced
Digital Multipoint Systems, specifies differential signaling drivers and receivers for data interchange across
half-duplex or multipoint data bus structures. Although TIA/EIA-485 specifies requirements for drivers and
receivers operating at a signaling rate up to 10 Mbps, the standard also states that devices meeting the
electrical characteristics of the standard:
SLLU122A – April 2010 – Revised July 2010
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
3
Overview
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…."need not operate over the entire data signaling rate range specified nor be limited to 10Mbps. They
may be specified to operate at data rates to satisfy specific applications. The upper bound is application
dependent and beyond the scope of this standard. Maximum signaling rate is typically limited by the
following: ratio of signal transition time to the unit interval, maximum allowable stub length, and the
bandwidth of the interconnecting media."
PROFIBUS (Process Field Bus), developed subsequently, had several impacts on the electrical (physical)
layer including an increase in the receiver noise margin, to allow the bus to be used in an extremely noisy
(i.e., EMI-rich) environment. This was accomplished by increasing the minimum differential voltage on the
bus. The ISO1176T has been designed specifically for these types of environments. The two standards
are indeed very similar.
1.2
1.2.1
EVM Kit Contents
ISO1176TEVM Kit Contents
ISO1176TEVM circuit board with ISO1176TDW installed - (6510416-1)
This PCB is configured with a DA2304-AL transformer and LP2985A-50DBVR LDO for 3-V to 5-V
operation on the logic side of the device and 5-V operation on the bus side.
1.2.2
ISO35TEVM Kit Contents
ISO35TEVM circuit board with ISO35TDW installed – (6510416-2)
This PCB is configured with a DA2303-AL transformer and LP2985A-33DBVR for 3-V operation on the
logic and bus sides of the device.
1.2.3
ISO3086TEVM Kit Contents
ISO3086TEVM circuit board with ISO3086TDW installed - (6510416-3)
This PCB is configured with a DA2304-AL transformer and LP2985A-50DBVR LDO for 3-V to 5-V
operation on the logic side of the device and 5-V operation on the bus side.
The ISO1176T/35T/3086TEVM is shown in Figure 4.
4
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
SLLU122A – April 2010 – Revised July 2010
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Figure 4. ISO1176T/35T/3086TEVM Board
1.3
Configurations
The ISO1176T/35T/3086TEVM board allows the user to evaluate performance of any of the three devices,
or to connect easily to an existing PROFIBUS or RS-485 bus to evaluate system performance in an
existing system. Also, multiple EVMs can be obtained to allow the user to construct various bus
configurations. With just two EVMs, the user may evaluate performance of a point-to-point simplex,
parallel-terminated point-to-point simplex, and two-node multipoint operation. When using multiple EVMs,
all of these modes of operation can be configured through onboard jumpers, external cabling, and the
R7–R10 resistors.
SLLU122A – April 2010 – Revised July 2010
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
5
Overview
1.3.1
www.ti.com
Point-to-Point
The point-to-point configuration is shown in Figure 5. This configuration requires two EVMs, and although
this is not the intended mode of operation for PROFIBUS/RS-485 devices, it is used for high noise or
longer (higher loss) transmission lines. Due to the increased drive current, a single 100-Ω termination
resistor on the EVM results in a differential bus voltage (Vod) twice as large as the normally doubled
terminated line. This practice is acceptable as long as the combination of input voltage and common-mode
voltage does not exceed absolute maximum ratings of the line circuits.
This configuration is shown in Figure 5. It consists of a single driver on the left, and a single receiver on
the right. Note that the termination resistors (R9 and R10) have been removed from the driver EVM.
This configuration shows the receiver disabled on the driver (JUMP2 connected to Vcc) EVM and the
driver disabled on the receiver EVM (JMP4 tied to GND1). Note that with only a single termination, the
differential bus voltage is higher than normal.
R9 and R10 Removed
EVM 1
EVM 2
T
Disabled
Disabled
Figure 5. Point-to-Point Simplex Circuit
This configuration also can have a termination at the source and load (parallel terminated as shown
Figure 6) thereby, keeping nominal PROFIBUS/RS-485 signal levels.
EVM 1
EVM 2
T
T
Disabled
Disabled
Figure 6. Parallel Terminated Simplex Circuit
1.3.2
Multipoint
The multipoint configuration is the primary application of PROFIBUS/RS-485. The RS-485 standard allows
for any combination of drivers, receivers, or transceivers up to a total of 32 unit loads on the line. The
ISO1176T device allows the total number of nodes to be increased because ISO1176T represents just 1/5
of a unit load. This allows up to 160 nodes to be connected onto a single bus. Figure 7 shows a
representation of a five-node multipoint configuration using five ISO1176T transceivers. Increased drive
current in addition to the wide common-mode input, allows this ISO1176T PROFIBUS transceiver to drive
multiple receivers over longer line lengths. Notice that the termination resistors (R9 and R10) are only
installed on the EVMs at each end of the bus.
6
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
SLLU122A – April 2010 – Revised July 2010
Overview
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Figure 7. Five-Node Multipoint Circuit
Notice that the bus configuration shown in Figure 7 can be redrawn as shown in Figure 8. Additional
EVMs can be obtained and connected to the bus, but the termination resistors on those EVMs need to be
removed so that the bus is terminated only at each end.
T
T
U1
U2
Figure 8. Two-Node Multipoint Circuit
1.4
Operation Over Extended Common-Mode Voltage Range
One of the features of the three ISO devices is their operation over an extremely wide common-mode
voltage range or –7 Vdc to +12 Vdc. This can be evaluated using two EVMs, each powered from a
separate independent power supply. This extended common-mode range is important because
communications between equipment located hundreds of meters apart usually means a voltage offset
exists between the grounds of each node. The EVMs can be configured with three power supplies with
isolated outputs in such a way as to input a fixed offset between the grounds (see Figure 7). This induces
a ground potential difference voltage (VGPD) between EVM#1 and EVM#2. To demonstrate this
capability, the following steps are presented.
1. Adjust PS1 and PS2 to the supply voltage (+5 V) and current limit to 200 mA.
2. Set PS3 to 0 V.
3. Induce a ground offset by varying the output of PS3.
WARNING
PS3 output must not exceed +12 V to -7 V to remain within the
device ratings.
SLLU122A – April 2010 – Revised July 2010
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
7
Recommended Equipment
www.ti.com
P1
P3
P3
Vcc 1
Vcc 2
P1
Vcc 2
Vcc 1
Interconnecting media
Input
Pattern to
Driver
J4
A J8
J8 A
B J9
J9 B
D
EVM #1
GND 2
GND 1
EVM #2
GND 2
R
Output from
Receiver
GND 1
P3
Power Supply
No. 3
Power Supply
No. 1
Power Supply
No. 2
Figure 9. EVM Configuration for Inducing a Ground Potential Difference Voltage Between Nodes
2
Recommended Equipment
•
•
•
•
2.1
5-Vdc at 0.5 A power supply
A pattern generator capable of supplying single-ended signals at the desired signaling rate and input
levels
A multiple-channel, high-bandwidth oscilloscope, preferably above the 100-MHz range. Differential and
single-ended oscilloscope probes
When using two or more EVMs, a 100-Ω transmission medium between transceivers (twisted-pair
cable recommended, CAT5 cable for example) made be used using JMP7 and JMP9 (half duplex)
between EVMs. Full-duplex connections can be made using JMP5/JMP7 and JMP8/JMP9. The
termination resistors need to be configured for each case.
EVM Configurations
The schematic for the ISO1176TEVM appears on the last page of this manual.
Table 1 contains a list of the onboard jumpers and their function as well as the input and output loading
installed on the board for the half-duplex ISO1176TEVM. Table 2 contains the same information for the
full-duplex ISO35TEVM and ISO3086TEVM.
Table 1. EVM Configuration Options for ISO1176T
Jumper Function
Configuration
I/O Load
DATA/CONTROL
SIDE JUMPERS
JMP1 – Receiver Output
R1 (see JMP16)
JMP2 – Receiver Enable
R2 – 50 Ω (1)
JMP3 – Driver Enable
R3 – 50 Ω (1)
JMP4 – Driver Input
R4 – 50 Ω (1)
R7 – Uninstalled
JMP6 – D1/D2 Test Point
R8 – Uninstalled
JMP16 – Rout Load
(1)
8
Jumper short allows Rout to be
pulled up to Vcc or to GND through
a 1-kΩ resistor.
R10 – Uninstalled
These resistors are provided as impedance-matching terminations to be used when driving these
signals with 50-Ω source impedance test/measurement equipment. When not driving these signals with
a 50-Ω source, the components must be removed.
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
SLLU122A – April 2010 – Revised July 2010
Recommended Equipment
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Table 1. EVM Configuration Options for ISO1176T (continued)
Jumper Function
Configuration
JMP22 – RE Test Point
I/O Load
R11 – Uninstalled
JMP23 – DE Test Point
JMP24 – D Test Point
JMP30 – D2
Connects D2 output to transformer
pin 1
Jumper short installed
JMP31 – D1
Connects D1 output to transformer
pin 4
Jumper short installed
Jumper installed from pin 2 to pin 3
Ground U1-14
BUS SIDE JUMPERS
JMP5 – GND2
JMP7 – Bus Pin B
R8,R10 – Uninstalled
JMP8 – GND2
Jumper installed from pin 2 to pin 3
Ground U1-11
JMP9 – Bus Pin A
Bus termination A to B
Install R9 – 54 Ω
JMP25
Not used on half-duplex device
JMP26 – A Test Point
JMP27 – B Test Point
JMP28
Not used on half-duplex device
JMP29 – ISODE Test Point
ISO1176T only
JMP32 – Regulator Output
Jumper installed from pin 1 to pin 2
Connects regulator output to
Vcc2. Remove this jumper
when connecting power
externally (regulator not in use)
NOTE: For half-duplex operation R9 for half-duplex ISO1176T device;
R9 (54 Ω) only; R7, R8, AND R10 R7, R8, and R10 for full-duplex
are uninstalled.
device.
Table 2. EVM Configuration Options for ISO35T and ISO3086T
Jumper Function
Configuration
I/O Load
DATA/CONTROL
SIDE JUMPERS
JMP1 – Receiver Output
R1 (see JMP16)
JMP2 – Receiver Enable
R2 – 50 Ω (1)
JMP3 – Driver Enable
R3 – 50 Ω (1)
JMP4 – Driver Input
R4 – 50 Ω (1)
R7 – Uninstalled
JMP6 – D1/D2 Test Point
JMP16 – Rout Load
Jumper short allows Rout to be pulled
up to Vcc or to GND through a 1-kΩ
resistor.
JMP22 – RE Test Point
JMP23 – DE Test Point
JMP24 – D Test Point
JMP30– D2
Connects D2 output to transformer pin 1
Jumper Short Installed
JMP31 – D1
Connects D1 output to transformer pin 4
Jumper Short Installed
JMP5 – A Input
R7 and R8 for bus termination
R7 – 50 Ω
JMP7 – B Input
mmm Across A and B inputs
R8 – 50 Ω
BUS SIDE JUMPERS
(1)
These resistors are provided as impedance-matching terminations to be used when driving these signals with 50-Ω source
impedance test/measurement equipment. When not driving these signals with a 50-Ω source, the components must be removed.
SLLU122A – April 2010 – Revised July 2010
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
9
Recommended Equipment
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Table 2. EVM Configuration Options for ISO35T and ISO3086T (continued)
Jumper Function
Configuration
I/O Load
JMP8 – Y Output
R10 set source termination across
R10 – 54 Ω
JMP9 – Z Output
mmm Driver pins Y and Z
R10 – 54 Ω
Jumper installed from pin 1 to pin 2
Jumper short installed to short U1-10 to
GND2
JMP25 – A Test Point
JMP26 – Z Test Point
JMP27 – B Test Point
JMP28 – Y Test Point
JMP29 – GND2
JMP32 – Regulator Output
2.2
Connects regulator output to Vcc2. Remove
this jumper when connecting power
externally (regulator not In use)
Bill of Materials
The items used in the ISO1176T/35T/3086TEVM are listed in the bill of materials in Table 3, Table 4, and
Table 5.
Table 3. ISO1176TEVM Bill of Material
Item
Qty
Reference
Value
Footprint
Manufacturer
Part Number
1
1
C2
68 µF
cc7260
SPRAGUE
592D68X0010R2T
2
1
C3
10 µF
cc7343
SPRAGUE
293D106X0035D2W
3
1
C4
1 µF
cc1206
AVX
12063G105ZATRA
4
1
C5
0.1 µF
cc1206
AVX
12065C104JATMA
5
1
C6
0.01 µF
cc0805
AVX
06033G102JATMA
6
1
C7
DNI
cc0805
7
2
C15, C17
10 µF
cc1206
8
1
C16
22 µF
cc1210
9
2
D1,D2
1N5817
10
10
JMP1, JMP16, JMP22–JMP29
Header 3x1
11
8
JMP2–JMP9
Header 4x1
12
3
JMP30–JMP32
Header 2x1
13
2
P1, P2
Banana-Jack
bjack
ITT-POMONA
3267
14
1
R1
1K
r0805
15
5
R2, R3, R4
49.9
r0805
16
2
R7, R8, R10, R11
DNI
r0805
17
1
R9
54
r0805
18
1
T1
DA2304-AL
Coil Craft
DA2304-AL
19
1
U1
ISO1176T
16 pin DW
TI
ISO1176T
20
1
U3
LP2985A50DBVR
SOT23-5
TI
LP2985A-50DBVR
10
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
SLLU122A – April 2010 – Revised July 2010
Recommended Equipment
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Table 4. ISO35TEVM Bill of Materials
Item
QTY
Reference
Value
Footprint
Manufacturer
Part Number
1
1
C2
68 µF
cc7260
SPRAGUE
592D68X0010R2T
2
1
C3
10 µF
cc7343
SPRAGUE
293D106X0035D2W
3
1
C4
1 µF
cc1206
AVX
12063G105ZATRA
4
1
C5
0.1 µF
cc1206
AVX
12065C104JATMA
5
1
C6
0.01 µF
cc0805
AVX
06033G102JATMA
6
1
C7
DNI
cc0805
7
2
C15, C17
10 µF
cc1206
8
1
C16
22 µF
cc1210
ITT-POMONA
3267
Coil Craft
DA2303-AL
9
2
D1, D2
1N5817
10
10
JMP1, JMP16, JMP22–JMP29
Header 3x1
11
8
JMP2–JMP9
Header 4x1
12
3
JMP30–JMP32
Header 2x1
13
2
P1, P2
Banana-Jack
bjack
14
1
R1
1K
r0805
15
3
R2, R3, R4, R7, R8
49.9
r0805
16
1
R10
54
r0805
17
4
R9, R11
DN!
r0805
18
1
T1
DA2303-AL
19
1
U1
ISO35T
16 pin DW
TI
ISO35T
20
1
U3
LP2985A-33DBVR
SOT23-5
TI
LP2985A-33DBVR
Table 5. ISO3086TEVM Bill of Materials
Item
QTY
Reference
Value
Footprint
Manufacturer
Part Number
1
1
C2
68 µF
cc7260
SPRAGUE
592D68X0010R2T
2
1
C3
10 µF
cc7343
SPRAGUE
293D106X0035D2W
3
1
C4
1 µF
cc1206
AVX
12063G105ZATRA
4
1
C5
0.1 µF
cc1206
AVX
12065C104JATMA
5
1
C6
0.01 µF
cc0805
AVX
06033G102JATMA
6
1
C7
DNI
cc0805
7
2
C15, C17
10 µF
cc1206
8
1
C16
22 µF
cc1210
9
2
D1, D2
1N5817
10
10
JMP1, JMP16, JMP22–JMP29
Header 3x1
11
8
JMP2–JMP9
Header 4x1
12
3
JMP30–JMP32
Header 2x1
13
2
P1, P2
Banana-Jack
bjack
ITT-POMONA
3267
14
1
R1
1K
r0805
15
3
R2, R3, R4, R7, R8
49.9
r0805
16
1
R10
54
r0805
17
4
R9, R11
DN!
r0805
18
1
T1
DA2304_AL
Coil Craft
DA2304-AL
19
1
U1
ISO3086T
16 pin DW
TI
ISO3086T
20
1
U3
LP2985A-50DBVR
SOT23-5
TI
LP2985A-50DBVR
SLLU122A – April 2010 – Revised July 2010
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
11
Recommended Equipment
2.3
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PCB Layout and Construction
The ISO1176/35T/3086TEVM PCB is a 4-layer board. The top and bottom layers (Figure 10 and
Figure 12) contain signal routing. The remaining layers (Figure 11 and Figure 13) are power and ground
planes. These are split planes to keep the Vcc1/GND1 separate from Vcc2/GND2. The I/O traces are
designed to have a characteristic impedance of 50 Ω.
Figure 10. PCB Top Layer
12
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
SLLU122A – April 2010 – Revised July 2010
Recommended Equipment
www.ti.com
Figure 11. Silk Screen – Top Side
SLLU122A – April 2010 – Revised July 2010
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
13
Recommended Equipment
www.ti.com
Figure 12. Signal Traces – Bottom Layer
14
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
SLLU122A – April 2010 – Revised July 2010
Recommended Equipment
www.ti.com
Figure 13. Silkscreen – Bottom Layer
SLLU122A – April 2010 – Revised July 2010
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
15
1
VCC1
JMP6
1
2
3
4
JMP30
Header 2x1
C17
10uF
U3
1
2
Header 4x1
T1
1
2
3
4
P1
Banana-Jack
8
7
6
5
C16
22uF
D2
1
4
LP2985A-33DBVR
2
1
C2
68 uF
+
C3
10 uF
C4
1 uF
+
+
C5
0.1 uF
+
VCC2
49.9
DNI
JMP1
JMP27
B
GND1 Header 3x1
D2
GND1
VCC1
R
RE*
DE
Din
R
GND1
JMP5
Header 3x1
R11
Header 2x1
JMP32
VCC2 Header 4x1
Header 3x1
1
2
3
R7
1
2
3
4
GND2 A 1
2
3
JMP16
1
2
3
R1
1K
C7
DNI
U1
D1 1 Name
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
49.9
R8
1
2
3
4
1
2
3
JMP7
Header 3x1
GND2/A
B
A/Z
GND2/Y
ISODE/GND2
GND2
DNI
R9
VCC2
Header 4x1
16 pin DW
JMP26
AZ
VCC1
1
2
3
1
2
3
4
Header 4x1
Header 3x1
1
2
3
4
RE*
JMP2
1
2
3
JMP22
GND1
54
R10
R2
49.9
VCC2 Header 4x1
GND1
JMP28
Header 4x1 VCC1
1
2
3
Header 3x1
DE
GND1
JMP3
Header 4x1
1
2
3
Header 3x1
GND1
JMP8
Jumpers
1. JMP2 Pins 2&3
2. JMP3 Pins 1&2
3. JMP30 Pins 1&2
4. JMP31 Pins 1&2
5. JMP32 Pins 1&2
ISO1176T
1. Do not install R7, R8, R10 and R11.
2. Install R9 54 ohms.
3. Jumper JMP25 Pins 1 and 2 (GND2).
3. Jumper JMP28 Pins 1 and 2 (GND2).
ISO35T/3086T
1. Do not install R9 and R11.
2. Install R7, R8 and 10.
3. Jump JMP29 Pins 1 and 2 (GND2).
JMP29
ISODE1
2
3
VCC1
D
1
2
3
4
A
R3
49.9
JMP23
Header 3x1
1
2
3
4
JMP9
Header 3x1
GND2 Y
1
2
3
4
C15
10uF
Header 4x1
JMP25
GND1
VCC1
VCC2
C6
0.01 uF
1
2
VCC1
+
JMP4
5
Vin Vout
GND
Enable
NR
DA2303_AL
Header 2x1
JMP31
A
1
2
3
1N5817
1
2
1
P2
Banana-Jack
1N5817
D1
1
2
1
2
3
Header 3x1
ISO35T
ISO1176T/3086T
LP2985A-33DBVR
LP2985A-50DBVR
DA2303-AL
DA2304-AL
R4
49.9
JMP24
Title
ISO1176T/35T/3086T EVM
Size
B
Date:
1
Document Number
6510416
Friday, June 25, 2010
Rev
