MAXFILTERBRD

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Detailed Description of Hardware

The MAXFILTERBRD is an unpopulated PCB design to

evaluate the MAX7408–MAX7415/MAX7418–MAX7425

5th-order, lowpass SCFs.

Internal Clock

The MAXFILTERBRD uses the internal oscillator when

a capacitor is installed on C1. Refer to corresponding

installed IC data sheet.

For the MAX7409/MAX7410/MAX7413/MAX7414, the

frequency can be altered using the following formula:

frequency.

External Clock

An external clock that matches the specification of the

corresponding IC data sheet can be used by cutting

the trace of jumper JU2. Drive the CLK pin with a CMOS

gate powered from 0 to VDD. Apply the clock signal to

the CLK pad.

Shutdown

The MAXFILTERBRD is configured for normal operation

once the desired IC is installed. The desired IC enters

shutdown by cutting the trace of jumper JU1 and driving

the IC SHDN pin low through the side of the jumper that

is still connected to the part.