Si 8 0 x x - EVB
S i 8 0 XX T HREE TO S IX C H A N N E L D I G I TA L I SO LATO R
E VAL UATI O N B O ARD U S E R ’ S G U I D E
1. Introduction
The Si80xx evaluation kit allows designers to evaluate Skyworks Solutions’ family of low-power digital isolators.
These are CMOS devices offering substantial data rate, propagation delay, power, size, reliability, and external
BOM advantages over legacy isolation technologies. The operating parameters of these products remain stable
across wide temperature ranges and throughout device service life for ease of design and highly uniform
performance. All device versions have Schmitt trigger inputs for high noise immunity and only require VDD bypass
capacitors. Data rates up to 10 Mbps are supported, and all devices achieve propagation delays of less than 65 ns.
Enable inputs provide a single point control for enabling and disabling output drive. Ordering options include a
choice of 1kVRMS isolation ratings. For more information, refer to the Si80xx family data sheets. This evaluation kit
consists of an evaluation board featuring the QSOP-16 package. Note that the other packages are not available at
this time.
1.1. Kit Contents
The Si80xx Evaluation Kit contains the following items:
Si80xx
based evaluation board as shown in Figures 1.
Si80xx
Digital isolator (installed on the evaluation board)
Si8065
(QSOP-16)
Figure 1. Si80xx Evaluation Board Overview
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Si80xx-EVB
2. Required Equipment
The following items are required to demonstrate the evaluation board:
2
1
digital multimeter
2
multimeter test leads (red and black)
1
oscilloscope (Tektronix TDS 2024B or equivalent)
1
BNC splitter
4
coaxial cables
2
dc power supply (HP6024A, 30 V dc, 0–100 mA or equivalent)
2
BNC to clip converters (red and black)
4
Banana to clip wires (2 red and 2 black)
1
function generator (Agilent 33220A, 20 MHz or equivalent)
Si80xx
Evaluation Board (board under test)
Si80xx
Digital Isolator Input Evaluation Board User's Guide (this document)
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Si80xx-EVB
3. Hardware Overview and Demo
Figure 2 illustrates the connection diagram used to demonstrate the Si80xx-EVB. This demo transmits a 500 kHz
(5 V peak, 50 percent duty cycle) square wave through the isolator to its output. In this example, VDD1 and VDD2
are powered by 5 V supplies. Figure 3 shows a scope shot of CH1 (input) and CH2 (output). Note that if a user
wants to evaluate a digital isolator other than the ones pre-populated, this can be accomplished by removing the
installed device and replacing it with the desired footprint-compatible isolator device.
5 V
Supply
5 V
Supply
Si8065
EVB
Signal Generator
Signal Input
500 kHz, 5 Vpk
Square Wave
VDD1
A1
GND1
Oscilloscope
VDD2
B1
GND2
Ch1
Ch2
Figure 2. Summary Diagram and Demo Setup
Figure 3. Oscilloscope Display of Input and Output
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Si80xx-EVB
3.1. DC Supply Configuration
To run the demo, follow the instructions below. Review Figure 2 and Figure 5 if necessary.
1. Turn OFF the dc power supply and ensure that the output voltage is set to its lowest output voltage.
2. Connect the banana ends of the black and red banana-to-clip terminated wires to the outputs of both dc
supplies.
3. For the input side of the Si80xx-EVB, connect the clip end of the red banana-to-clip terminated wire to
VDD1 and the clip end of the black wire to GND1.
4. Similarly, for the output side of the EVB, the red wire goes to VDD2 and the black wire goes to GND2.
5. Turn ON the dc power supply and adjust both dc power supplies to provide 5 V on their outputs.
6. Ensure that the current draw is less than 25 mA. If it is larger, this indicates that either the board or Si80xx
has been damaged or the supply is connected backwards.
3.2. Wave Form Generator
1. Turn ON the arbitrary waveform generator with the output disengaged.
2. Adjust its output to provide a 500 kHz, 0 to 5 V peak square wave (50 percent duty cycle) to its output.
3. Connect one end of the first coaxial cable to the output of the signal generator.
4. Connect the BNC splitter to the other end of the first coaxial cable.
5. From the BNC splitter, connect the second coaxial cable to CH1 of the scope. CH1 will display the input to
the EVB.
6. Connect the third coaxial cable to the BNC splitter, and connect a BNC-to-clip converter to the end of this
coaxial cable.
7. From here, connect the clip end of the BNC-to-clip converter to the Si80xx-EVB’s A1 (red wire here) and
GND1 (black wire here).
8. Connect one end of the fourth coaxial cable to a BNC-to-clip converter (note that a scope probe can be
used here instead).
9. From here, connect the clip end of the BNC-to-clip converter to the Si80xx-EVB’s B1 (red wire here) and
GND2 (black wire here).
10. Connect the other end of the fourth coaxial cable to CH2 of the oscilloscope. CH2 will display the output
of the EVB.
11. Engage the output of the waveform generator.
3.3. Oscilloscope Setup
1. Turn ON the oscilloscope.
2. Set the scope to Trigger on CH1 and adjust the trigger level to 1 V minimum.
3. Set CH1and CH2 to 2 V per division.
4. Adjust the seconds/division setting to 400 ns/division.
5. Adjust the level indicator for all channels to properly view each channel as shown in Figure 3.
A 500 kHz square wave should display on Channel 1 of the scope for the input and a 5 V delayed version of this
square wave should display the output on Channel 2, as shown in Figure 3. This concludes the basic demo.
4
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • November 1, 2021
Si80xx-EVB
4. Hardware and Overview Setup
The board is designed to be powered from two separate supplies VDD1, VDD2 that can be independently varied
from 3.15 to 5.5 V. Figure 4 shows a silkscreen overview of the board and Figure 5 shows the board schematic.
The power and jumper connection descriptions are summarized here:
J1/3/5
Stake headers used to power and connect to the digital isolator’s Side1 pins.
J2/4/6
Stake headers used to power and connect to the digital isolator’s Side 2 pins.
TP1/2/3/4
Test Points that can also be used to provide VDD and GND.
/D86'-D/R
QQQNCYQJMCN?I9II=FS
S
S C5MGOS
S
S $;KNS
S
,1)+ S
S
& S
& S
Figure 4. Si80xx DIP8 Evaluation Board Silkscreen
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Si80xx-EVB
5. Si80xx Evaluation Board Schematics
U1
DC_VDD1
DC_VDD2
1
TP1
J1
C1
1uF
1
2
3
4
5
6
7
8
C2
0.1uF
TP3
2
3
4
5
6
HEADER 1x8
7
8
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
16
TP2
J2
15
14
13
12
1
2
3
4
5
6
7
8
C3
0.1uF
C4
1uF
TP4
11
HEADER 1x8
10
9
SOIC16WB
U2
DC_VDD1
1
J3
C5
1uF
1
2
3
4
5
6
7
8
C6
0.1uF
2
3
4
5
6
HEADER 1x8
7
8
DC_VDD2
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
16
J4
15
14
13
12
1
2
3
4
5
6
7
8
C7
0.1uF
C8
1uF
11
HEADER 1x8
10
9
SOIC16NB
U3
DC_VDD1
1
J5
C9
1uF
1
2
3
4
5
6
7
8
C10
0.1uF
2
3
4
5
6
HEADER 1x8
7
8
DC_VDD2
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
16
J6
15
14
13
12
1
2
3
4
5
6
7
8
C11
0.1uF
C12
1uF
11
HEADER 1x8
10
9
QSOP16
SF1
SF2
SF3
SF4
Figure 5. Si80xx Evaluation Board Schematic
6
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
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Si80xx-EVB
6. Bill of Materials
Table 1. Si80xx Evaluation Board Bill of Materials
Item
Qty
Ref
Part #
Supplier
Description
Value
1
6
C1, C4, C5,
C8, C9, C12
C0603X5R250-105K
Venkel
CAP, 1 µF, 25 V, ±10%, X5R,
0603
1 µF
2
6
C2, C3, C6,
C7, C10, C11
C0805X7R101-104K
Venkel
CAP, 0.1 µF, 100 V, ±10%,
X7R, 0805
0.1 µF
3
6
J1, J2, J3, J4,
J5, J6
TSW-108-07-T-S
Samtec
Header, 1x8, 0.1in pitch,
tin plated
HEADER
1x8
4
4
SF1, SF2,
SF3, SF4
SJ61A6
3M
HDW, Bumpon cylindrical
312X.215 BLK
Bumper
5
4
TP1, TP2,
TP3, TP4
151-201-RC
Kobiconn
Testpoint, White, PTH
White
6
1
U1
Si8065AD-B-IS
(not installed)
Skyworks
IC, three to six-channel digital SOIC16WB
isolators, SOIC16WB
7
1
U2
Si8065AC-B-IS1
(not installed)
Skyworks
IC, three to six-channel digital SOIC16NB
isolators, SOIC16NB
8
1
U3
Si8065AA-B-IU
Skyworks
IC, isolator, 6 I/O, QSOP16
QSOP16
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Si80xx-EVB
7. Ordering Guide
Table 2. Si80xx Evaluation Board Ordering Guide
Ordering Part Number (OPN)
Si80xx-KIT
8
Description
Si80xx Isolator Evaluation Board Kit
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • November 1, 2021
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