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Figure 4: Supply Voltage Vs Typical Supply Current

Other performance characteristics may be measured and plotted in a similar manner. Please

refer to the MX465’s specifications in section 2, Electrical Performance, on page 3 regarding

maximum and minimum operating limits each device is tested to meet. Section 2’s information is

used by the designer in regard to designing a circuit using the MX465 based on a device’s

electrical properties.

4.6 Connecting the DB1065 to a system

The DB1065 may be connected to a radio system by connecting wires to the terminal strips or the

DB1065’s smaller circuit may be broken out of the development board.

Refer to Figure 5: Breaking Out Small Circuit, on Page 13. Before snapping the smaller circuit

out the traces on the snap lines must be cut by carefully breaking off the three tabs containing the

terminal strips and dip switch. Try and avoid bending or flexing the smaller circuit as the surface

mount components are damaged easily. A set of tin snips can be also be used to cut out the

smaller board and trim up the excess or rough edge left on the smaller board.

Holes for soldering wires have been provided around the edge of the smaller inside circuit. Refer

to Figure 8: Component view Assembly Drawing, to connect wires appropriately. Solder jumpers

in the smaller circuit, E1 through E6, provide a method to select one CTCSS tone for operation.

Refer to Figure 9: Solder View Assembly Drawing, for reference to solder jumpers.

DB1065 / MX465 Vdd VS Typical Supply Current

0

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0123

4567

Vdd applied