–

–

–

–

6

7

Schematic

Figure 7 shows the schematic diagram for the evaluation module.

Pad Layout

Figure 8 shows the recommended PCB layout for the evaluation module.

Power Supply Requirements

The transceiver incorporates a precision

low-dropout regulator which allows operation

over a wide input voltage range. Despite this

regulator, it is still important to provide a supply

that is free of noise. Power supply noise can

significantly affect the module’s performance, so

providing a clean power supply for the module

should be a high priority during design.

A 10

Ω resistor in series with the supply followed by a 10μF tantalum

capacitor from V

power is poor (Figure 9). This filter should be placed close to the module’s

supply lines. These values may need to be adjusted depending on the

noise present on the supply line.

5 x Ø0.035”

51 x Ø0.026”

0.05”

0.05”

0.05”

0.05”

0.05”

0.09”

0.18”

0.80”

0.05”

0.07”

0.045”

0.075”

0.065”

1.17”

0.97”

0.05”

Figure 8: EVM-xxx-PRO PCB Layout Dimensions

Figure 7: EVM-xxx-PRO Schematic

10

Ω

10

µF

Vcc IN

Vcc TO

MODULE

Figure 9: Supply Filter