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MAX1470 Evaluation Kit
Detailed Description
Power-Down Control
The MAX1470 can be controlled externally using the
SHDN connector. The IC draws approximately 1.25μA
in shutdown mode. Jumper JU1 is used to control this
mode. The shunt can be placed between pins 2 and 3
for continuous shutdown, or pins 1 and 2 for continuous
operation. Remove the JU1 shunt for external control.
See Table 1 for the jumper function descriptions.
IF Input/Output
The 10.7MHz IF can be monitored with the help of a
spectrum analyzer using the MIX_OUT SMA (not provid-
ed). Remove the ceramic filter for such a measurement
and include R3 (270 ? ) and C17 (0.01μF) to match the
330 ? mixer output with the 50 ? spectrum analyzer.
Jumper JU3 needs to connect pins 1 and 2. It is also
possible to use the MIX_OUT SMA to inject an external
IF as a means of evaluating the baseband data slicing
section. Jumper JU3 needs to connect pins 2 and 3.
F_IN External Frequency Input
For applications where the correct frequency crystal is
not available, it is possible to directly inject an external
frequency through the F_IN SMA (not provided).
Connect the SMA to a function generator. The addition
Figure 1. MAX1470 EV Kit
Table 3. I/O Connectors
of C18 and C19 is necessary (use 0.01μF capacitors).
Test Points and I/O Connections
Additional test points and I/O connectors are provided
to monitor the various baseband signals and for external
connections. See Tables 2 and 3.
SIGNAL
RF_IN
F_IN
MIX_OUT
GND
3.3V
DATA_OUT
SHDN
DESCRIPTION
RF input
External reference frequency input
IF input/output
Ground
3.3V power input
Sliced data output
External power-down control
4
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