RF2485PCBA View Datasheet(PDF) - RF Micro Devices

Part Name

Description

MFG CO.

RF2485PCBA

VHF QUADRATURE MODULATOR

RF Micro Devices 

1 2 3 4 5 6 7 8

Preliminary

Application Schematic

RF2485

VDD

I INPUT

ZIN=100

1

100 nF

2

100 pF

Coupling Capacitor

NC 3

POWER

CONTROL

100 Ω

4

100 pF 50 Ω µstrip

14

13

12

11

RF OUTPUT

VREF

5

100 Ω

10

Σ

+45°

-45°

6

100 Ω

100 Ω

7

9

100 pF 50 Ω µstrip

5

8

LO INPUT

Q INPUT

ZIN=100

Coupling Capacitor

56 Ω

Note A

NOTE A: Optional; input impedance is about 79-J158 Ω at 400 MHz

without resistor. SMD resistor mounted adjacent to package pin,

grounded through a via to the ground plane.

Rev A3 010820

5-59

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