F2250 datasheet(18/25 Pages) RENESAS

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Voltage Variable RF Attenuator

50MHz to 6000MHz

Voltage Variable RF Attenuator

REV 4, January 2017

F2250NLGK

Datasheet

PIN DESCRIPTION

Name

Function

1, 5, 6, 7, 8,

12, 13

GND

Ground these pins as close to the device as possible.

2, 4, 9, 11

No internal connection. These pins can be left unconnected or

connected to ground (recommended).

RF1

RF Port 1. Matched to 50 ohms. Must use an external AC

coupling capacitor as close to the device as possible. For low

frequency operation increase the capacitor value to result in a

low reactance at the frequency of interest.

RF2

RF Port 2. Matched to 50 ohms. Must use an external AC

coupling capacitor as close to the device as possible. For low

frequency operation increase the capacitor value to result in a

low reactance at the frequency of interest.

VCTRL

Attenuator control voltage. Apply a voltage in the range as

specified in the Operating Conditions. See application section for

details about VCTRL.

VDD

Power supply input. Bypass to GND with capacitors close as

possible to pin.

VMODE

Attenuator slope control. Set to logic LOW to enable negative

attenuation slope. Set to logic HIGH to enable positive

attenuation slope.

— EP

Exposed Pad. Internally connected to GND. Solder this exposed

pad to a PCB pad that uses multiple ground vias to achieve the

specified RF performance.

F2250 Datasheet(PDF) 18 Page - Renesas Technology Corp