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MAX22245 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX22245
Description  Broad Range of Data Transfer Rates (from DC to 200Mbps)
PDF  11 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX22245 Datasheet(HTML) 4 Page - Maxim Integrated Products

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Evaluate: MAX22245/MAX22246
MAX22245/MAX22246 Evaluation Kits
Detailed Description of Hardware
The MAX22246CW and MAX2224XW EV kits allow the
user to evaluate the features of the MAX22245/MAX22246
two-channel digital isolators.
External Power Supplies
Power to the MAX22246CW and MAX2224XW EV kits
is derived from two external sources which can both
be between +1.71V and +5.5V. Connect one source
between the VDDA and GNDA test points, and the other
source between the VDDB and GNDB test points. Each
supply can be set independently and can be present over
the entire range from +1.71V to +5.5V, regardless of the
level or presence of the other supply. The MAX22245/
MAX22246 level-shift the data, transmitting them across
the isolation barrier.
Two SMA connectors on each side of the board allow
easy connections to signal generator(s) and oscilloscope.
A typical test setup is shown in Figure 3.
Decoupling Capacitors
Each power supply is decoupled with a 1µF ceramic
capacitor in parallel with a 0.1µF ceramic capacitor, which
are placed close to U1 VDDA and VDDB pins.
I/O Traces Impedance Control
The input and output traces of both isolation channels
have an impedance control of 50Ω. A 20Ω series resistor
is added to both input and output channels; along with
the internal series resistance, it can provide 50Ω imped-
ance matching with external equipment such as function
generators or oscilloscopes.
Output Load
Each output has an unpopulated 0402 SMT resistor
(RA1, RA2, RB1, and RB2) and an unpopulated 0402
SMT capacitor (CA1, CA2, CB1, and CB2) to GND_ to
allow different loads based on customer requirements.
Figure 3. MAX2224XW EV Kit Typical Test Setup
-
+
DC POWER SUPPLY
1.71V TO 5.5V
-
+
DC POWER SUPPLY
1.71V TO 5.5V
SIGNAL GENERATOR
OUT
OSCILLOSCOPE
F
C



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