RF Micro Devices Inc.

7628 Thorndike Road, Greensboro, NC 27409-9421

DS140501

For sales or technical support, contact RFMD at +1.336.678.5570 or customerservice@rfmd.com.

The information in this publication is believed to be accurate. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents or other rights of

third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended

application circuitry and specifications at any time without prior notice.

4 of 6

RFVC1821

Pin Names and Descriptions

Pin

Name

Description

Interface Schematic

1-14

N/C

No internal connection. Connect to PCB ground.

15

GND

Connect directly to PCB ground for best performance.

16

RFOUT

50

Ω termination is recommended for this pin.

17-19

N/C

No internal connection. Connect to PCB ground.

20

VCC

Connect 3V to power both the oscillator core and the buffer

amplifier.

21

N/C

No internal connection. Connect to PCB ground.

22

VTUNE

Direct connection to the varactor diodes used to vary the frequency

of oscillation.

23-24

N/C

No internal connection. Connect to PCB ground.

PKG BASE

GND

Ground connection. Solder package bottom directly to ground

plane for best performance.