EVAL-1CH2CHSOICEBZ Datasheet, PDF (3/8 Pages) Analog Devices – Access to 2 data channels

EVAL-1CH2CHSOICEBZ User Guide
EVALUATION BOARD CIRCUITRY
PCB EVALUATION GOALS
The EVAL-1CH2CHSOICEBZ board is intended to achieve the
following goals:
 Evaluate the full range of iCoupler data transfer functions.
 Independently power each side of an iCoupler isolator.
 Allow high differential voltage to be applied between the
two sides of an iCoupler isolator. Note that this board is
intended for evaluation of the components, but has not
been safety certified for high voltage operation. If differential
voltages above 60 V are applied, external safety measures
appropriate for the voltage must be in place.
 Allow easy connection to power supplies, data channels,
and instrumentation.
The evaluation board comes installed with power terminals,
bypass capacitors, and header pins. Note that the EVAL-
ADuM226N0EBZ is available with the ADuM226N0 device,
which is installed on the EVAL-1CH2CHSOICEBZ evaluation
board. All other compatible iCoupler digital isolators must be
ordered and installed separately on the EVAL-1CH2CHSOICEBZ
evaluation board.
The board is compatible with single- and dual-channel devices,
such as the ADuM110N, ADuM120N/ADuM121N, ADuM210N,
and ADuM225N/ADuM226N, as well as other 8-lead SOIC_N
and 8-lead SOIC_W iCoupler devices that share the package
and pin configuration examples shown in Figure 2, Figure 3,
and Figure 4.
V_DD1 1
V_I
(DATA IN)
2
V_DD1 3
ENCODE
DECODE
8 V_DD2
7 GND₂
6
V_O
(DATA OUT)
GND₁ 4
5 GND₂
Figure 2. ADuM110N/ADuM210N Functional Block Diagram
V_DD1 1
8 V_DD2
V_IA 2
ENCODE
DECODE
7 V_OA
V_IB 3
ENCODE
DECODE
6 V_OB
GND₁ 4
5 GND₂
Figure 3. ADuM120N/ADuM225N Functional Block Diagram
UG-937
CONNECTORS
The PCB provides support for three types of interconnections:
 SMA edge mounted connectors
 Through hole signal ground pairs
 Terminal blocks for power connections
With these three options, both temporary and permanent
connections to the board can be made.
When coaxial connections are required, SMA connector positions
are available for digital input/output signals and the VDD1/VDD2
power supplies. The SMA connector positions are unpopulated as
shipped and must be ordered from a distributor separately.
Figure 5 shows examples of installed SMA connectors; these
connectors were chosen because they are not only low profile
and provide excellent mechanical connections to the PCB, but
also support 50 Ω coaxial cabling.
1) SCOPE PROBE
2) SMA CONNECTOR
5) SCOPE PROBE
HEADER
3) TERMINAL
BLOCK
6) PADS TO
CONNECT SMA
4) SHORTING
JUMPER
Figure 5. Optional Components
Power can be connected through the J1 and J2 terminal blocks or
through the optional VDD1 and VDD2 SMA connectors. Signals
can be routed in or out with the provided header pins or the
optional SMA connectors. The pin spacing of each through-hole
connector is 0.1 inch between the centers. There are additional
signal test points with 0.2 inch spacing provided for active scope
probes. These header pins must be added separately. The
installed probe points are shown in Figure 5.
V_DD1 1
V_OA 2
V_IB 3
GND₁ 4
DECODE
ENCODE
ENCODE
DECODE
8 V_DD2
7 V_IA
6 V_OB
5 GND₂
Figure 4. ADuM121N/ADuM226N Functional Block Diagram
Rev. 0 | Page 3 of 8