SM5304AV

NIPPON PRECISION CIRCUITS INC.—6

I

Variable resistor

The frequency can be adjusted using a preset variable resistor VR connected to RFC.

I

Voltage control

The frequency can be adjusted by voltage control of the resistor connected to RFC using a DC voltage supply

(for example, using a DAC). In this case, the adjusting voltage must be controlled such that it does not exceed

the RFC pin voltage (1.5V typ).

I

Resistor switch control

The frequency can be adjusted by switching the resistance connected to RFC using logic voltage control.

RFC

RFC

RFC

SW

Control