EVAL-CN0159-EB1Z Analog Devices Inc, EVAL-CN0159-EB1Z Datasheet - Page 4

• Manufacturer Part Number: EVAL-CN0159-EB1Z
• Description: BOARD, EVAL, FOR CN0159
• Manufacturer: Analog Devices Inc
• Type: USB Cable Isolatorr
• Series: -r

Specifications of EVAL-CN0159-EB1Z

• Kit Contents: Board
• Mcu Supported Families: CN0159
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• Silicon Manufacturer: Analog Devices
• Silicon Core Number: CN0159
• Design Resources: USB Cable Isolator Circuit (CN0159)
• Main Purpose: Interface, Isolator USB Cable
• Embedded: No
• Utilized Ic / Part: ADuM1100, ADuM4160, ADuM5000
• Primary Attributes: -
• Secondary Attributes: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CN-0159
The cable design is fully isolated from the upstream data con-
nection for transients up to 2.5 kV. Future isoPower® modules
will enable full medical 5 kV isolation of cables. The down-
stream port is powered by the upstream VBUS1 line. This limits
the available power to the application to 500 mA at 5 V, the
maximum power available to a standard USB port. This is
adequate to run the
Low, full, and high speed peripherals can be connected to the
downstream ports, but the cable must be manually changed
between full speed and low speed modes. The design relies
on the internal short circuit protection of the
safety.
The data shown in Figure 3 and Figure 4 are generated as part
of the USB-IF qualification process. Figure 3 shows a test data
packet from the
note are the leading idle state where the passive resistor network
holds an idle J state. The center of the packet is a mix of J and K
states. The right side of the packet is an EOP (end of packet)
marker, which is a single-ended 0 followed by a driven J, which
transitions to an idle J.
Upstream Full Speed Signal Quality Test Reference: USB 2.0
Specification, Section 7.1.11.,Section 7.1.2.1. Upstream Full
Speed Rise Time Test Reference: USB 2.0 Specification, Section
7.1.11., Section 7.1.2.2. Upstream Full Speed Fall Time Test
Reference: USB 2.0 Specification, Section 7.1.11., Section
7.1.2.2.
Figure 3 is a full speed eye diagram showing that the
provides an adequate open eye, staying well out of the keep out
region. Similar data is taken for low speed evaluation as well.
Driven by the Upstream ADuM4160 Port
Figure 3. Full Speed Test Packet Traffic
ADuM4160
ADuM5000
upstream port to the host. Areas to
with a 100 mA external load.
ADuM5000
ADuM4160
for
Rev. A | Page 4 of 5
A complete design support package for this circuit note can be
found at
CIRCUIT EVALUATION AND TEST
Circuit note CN-0159 uses the CN0159 USB Cable Isolator
Circuit Board, specifically developed to evaluate and test the
circuit described in the note. A detailed schematic of the circuit
is contained in Figure 1.
Equipment Needed
A USB data port connection with an upstream-downstream
data path, the CN0159 Universal Serial Bus (USB) Cable
Isolator Circuit Board or equivalent board, two USB cables, and
a high speed digital oscilloscope.
Getting Started
Circuit note CN-0159 contains a description of the circuit, a
circuit schematic, and a schematic of the test setup. It describes
how to perform the testing and obtain the data. Details
regarding the CN-0159 USB Cable Isolator Circuit Board,
including Gerbers, bill of materials, and other information, is
available at http://www.analog.com/CN0159-DesignSupport.
Information regarding the isolator components used in the
circuit can be found in the ADuM1100, the ADuM4160, and
the
user guide UG-043, and the evaluation board user guide for the
16-lead SOIC and 16-lead QSOP digital isolators, UG-042.
Functional Block Diagram
See Circuit Description section for the schematic and
information regarding the described test setup.
ADuM5000
http://www.analog.com/CN0159-DesignSupport.
Figure 4. Full Speed Eye Diagram Showing the
data sheets; the
Exclusion Zone
ADuM4160
evaluation board
Circuit Note