RF2705 datasheet(21/24 Pages) RFMD

Part #	RF2705

Description	LOW NOISE, MULTI-MODE, QUAD-BAND, QUADRATURE MODULATOR AND PA DRIVER

PDF	24 Pages

Scroll/Zoom	100%

Manufacturer	RFMD [RF Micro Devices]

Direct Link	http://www.rfmd.com

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21 / 24 page

5-133

RF2705

Rev A4 041026

Evaluation Board Schematic

Note: The die flag is the

chip's main ground.

+45°

-45°

DIV

+45°

-45°

Flo

Mode Control

and Biasing

Power

Control

5.6 pF

MODE B

MODE A

1 nF

VCC

Ωµstrip

I SIG N

Ωµstrip

I SIG P

1.8 pF

3.9 nH

Ωµstrip

HB LO

C13

3 pF

22 nH

Ωµstrip

LB LO

MODE C

MODE D

Ωµstrip

Q SIG N

Ωµstrip

Q SIG P

C15

1 nF

C14

10 nF

CON4

P2-1

MODE D

P2-4

MODE A

P2-3

MODE B

P2-2

MODE C

12 nH

C17

3.3 pF

1 k

Ω

12 nH

C16

3.3 pF

100 pF

C18

0.5 pF

VCC

Ωµstrip

LB RF OUT

4.3 nH

1.6 pF

430

Ω

4.3 nH

C10

1.6 pF

C11

22 pF

DNI

VCC

Ωµstrip

HB RF OUT

2.2 nH

4.3 pF

1 k

Ω

2.2 nH

4.3 pF

12 pF

C12

1.3 pF

VCC

Ωµstrip

WB RF OUT

Murata

LDB211G8020C-001

Murata

LDB211G9020C-001

Murata

LDB21906M20C-001

430

Ω

GND

VCC

P1-1

P1-3

CON3

RF2705 Datasheet(PDF) 21 Page - RF Micro Devices

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