RF2705 查看數據表（PDF） - RF Micro Devices

零件编号

产品描述 (功能)

比赛名单

RF2705

QUADRATURE DEMODULATOR

RF Micro Devices 

0

Typical Applications

• EDGE/GSM (GSM850/900) Handsets

• EDGE/GSM (DCS/PCS) Handsets

• W-CDMA Handsets/Data Cards

RF2705

LOW NOISE, MULTI-MODE, QUAD-BAND,

QUADRATURE MODULATOR AND PA DRIVER

• W-CDMA/GSM/EDGE Multimode Handsets

and Data Cards

Product Description

The RF2705 is a low noise, multi-mode, quad-band direct

I/Q to RF modulator and PA driver designed for handset

applications where multiple modes of operation are

required. Frequency doublers, dividers and LO buffers

are included to support a variety of LO generation

options. Dynamic power control is supported through a

single analog input giving 90dB of power control range for

the W-CDMA mode and 40dB of power control in the

other two modes. Three sets of RF outputs are provided:

high band and low band low noise EDGE/GMSK outputs,

as well as one wideband W-CDMA output. The device is

designed for 2.7V to 3.3V operation, and is assembled in

a plastic, 24-pin, 4mmx4mm QFN.

Optimum Technology Matching® Applied

Si BJT

GaAs HBT

GaAs MESFET

Si Bi-CMOS

InGaP/HBT

SiGe HBT

Si CMOS

9 GaN HEMT

SiGe Bi-CMOS

24

23

22

VCC2 1

LO HB P 2

Note: The die flag is the

chip's main ground.

LO HB N 3

DIV +45°

2

-45°

LO LB P 4

Flo +45°

x2 -45°

LO LB N 5

Mode Control

and Biasing

MODE C 6

7

8

9

21

20

19

18

RF OUT

WB P

17

RF OUT

WB N

16

RF OUT

HB P

Σ

15

RF OUT

HB N

Power

Control

14

RF OUT

LB P

13

RF OUT

LB N

10

11

12

Functional Block Diagram

0.10 C

4.00

-A-

-B-

1.00

0.80

4.00

0.10 C

0.10 C

0.50 TYP

2.45

+0.10

-0.10

0.10 C

2.45

+0.10

-0.10

Shaded lead is pin 1.

Dimensions in mm.

0.10 C

-C-

SEATING

PLANE

Scale: None

0.08 C

0.05

0.00

0.30

0.18

TYP

0.10 M C A B

0.50

0.30

TYP

Package Style: QFN, 24-Pin, 4x4

Features

• W-CDMA High/Mid/Low Power Modes

• Quad-Band Direct Quadrature Modulator

• Variable Gain PA Drivers

• GMSK Bypass Amplifiers

• LO Frequency Doubler and Divider

• Baseband Filtering

Ordering Information

RF2705

Low Noise, Multi-Mode, Quad-Band, Quadrature

Modulator and PA Driver

RF2705PCBA-41XFully Assembled Evaluation Board

RF Micro Devices, Inc.

7628 Thorndike Road

Greensboro, NC 27409, USA

Tel (336) 664 1233

Fax (336) 664 0454

http://www.rfmd.com

Rev A4 041026

5-113

Share Link: