RF2958 データシートの表示（PDF） - RF Micro Devices

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RF2958

2.4GHz SPREAD-SPECTRUM TRANSCEIVER

RF Micro Devices 

0

Typical Applications

• IEEE 802.11b WLANs

• Wireless Residential Gateways

• Secure Communication Links

RF2958

2.4GHz SPREAD-SPECTRUM TRANSCEIVER

• High Speed Digital Links

• Wireless Security

• Digital Cordless Telephones

Product Description

The RF2958 is a single-chip transceiver specifically

designed for IEEE 802.11b applications. The part

includes all required transceiver functions. The receiver

includes: an LNA and downconverter; complete synthe-

sizers and VCO’s; direct conversion from IF receiver with

variable gain control; quadrature demodulator; I/Q base-

band amplifiers; and, on-chip baseband filters. For the

transmit side, a QPSK modulator and upconverter are

provided along with the synthesizer, VCO, and PA driver.

A minimum number of external components are required,

resulting in an ultra-compact low-cost radio design. Two-

cell or regulated three-cell (3.6V maximum) battery appli-

cations are supported by the part. The RF2958 is also

part of a 2.4GHz chipset along with our high-efficiency

GaAs HBT PA and the RF3002 Baseband Processor.

5.000

± 0.050

0.900

± 0.070

3.400

5.000

± 0.050 Shaded lead is pin 1.

Dimensions in mm.

0.400

± 0.050 TYP

3.400

-C-

SEATING

PLANE

SCALE:

NONE

0.500

TYP

0.100 M C

0.025

± 0.010

0.080 C

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

32

31

30 29 28 27 26 25

IF IN+ 1

IF IN- 2

3rd Order

Bes LPF

3rd Order

Bes LPF

3rd Order

Bes LPF

3rd Order

Bes LPF

IF Synth Analog

RF PLL

Voltage

Regulator

VCC IF 3

RX IF

Voltage

Regulator 1

RX IF

Voltage

Regulator 2

R BIAS 4

VCC RF2 5

D/A MUX

VCC RF1 6

IF OUT- 7

LC Trap

IF OUT+ 8

9

10

11

12

13

SPI Serial Port

Frac-N Digital

P&R

Digital

Voltage

Regulator

RF Synth Analog

RF PLL

Voltage

Regulator

14

15

16

24 VREF

23 DIG REG

22 VCC PLL4

21 SCLK

20 SSB

19 SDI

18 MCLK

17 MODE0

Functional Block Diagram

Package Style: QFN, 32-Pin, 5x5

Features

• Complete IEEE802.11b Transceiver

including VCOs

• Small 32-pin Leadless Package

• Minimal External Components Required

• Low Receive Current

• High Performance Super-het Architecture

Ordering Information

RF2958

RF2958TR13

RF2958 PCBA

2.4GHz Spread-Spectrum Transceiver

2.4GHz Spread-Spectrum Transceiver (Tape & Reel)

Fully 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 A0 050209

11-263

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