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RF2958 Datasheet

  • RF2958

  • 2.4GHz SPREAD-SPECTRUM TRANSCEIVER

  • 20頁

  • RFMD

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RF2958
0
Typical Applications
鈥?IEEE 802.11b WLANs
鈥?Wireless Residential Gateways
鈥?Secure Communication Links
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鈥檚; 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.
Optimum Technology Matching廬 Applied
Si BJT
Si Bi-CMOS
InGaP/HBT
RX VGC
RX Q
RX I
2.4GHz SPREAD-SPECTRUM TRANSCEIVER
鈥?High Speed Digital Links
鈥?Wireless Security
鈥?Digital Cordless Telephones
5.000
鹵 0.050
0.900
鹵 0.070
5.000
鹵 0.050
Shaded lead is pin 1.
Dimensions in mm.
3.400
0.400
鹵 0.050 TYP
-C-
SEATING
PLANE
3.400
SCALE:
NONE
0.500
TYP
0.100 M C
0.080 C
0.025
鹵 0.010
Package Style: QFN, 32-Pin, 5x5
GaAs HBT
SiGe HBT
GaN HEMT
VCC BB
Q BYP
I BYP
TX Q
GaAs MESFET
Si CMOS
SiGe Bi-CMOS
Features
鈥?Complete IEEE802.11b Transceiver
including VCOs
24 VREF
32
31
30
29
28
3rd Order
Bes LPF
TX I
27
26
3rd Order
Bes LPF
25
IF IN+ 1
3rd Order
Bes LPF
3rd Order
Bes LPF
鈥?Small 32-pin Leadless Package
鈥?Minimal External Components Required
鈥?Low Receive Current
鈥?High Performance Super-het Architecture
IF IN- 2
IF Synth Analog
RF PLL
Voltage
Regulator
23 DIG REG
VCC IF 3
22 VCC PLL4
21 SCLK
RX IF
Voltage
Regulator 1
RX IF
Voltage
Regulator 2
SPI Serial Port
Frac-N Digital
P&R
20 SSB
R BIAS 4
D/A
MUX
19 SDI
VCC RF2 5
VCC RF1 6
Digital
Voltage
Regulator
LC Trap
RF PLL
Voltage
Regulator
Ordering Information
18 MCLK
IF OUT- 7
RF Synth Analog
IF OUT+ 8
17 MODE0
9
TX VGC
10
RF OUT
11
VCC RF3
12
RF IN
13
LNA GS
14
VCC PLL1
15
PLL REG
16
MODE1
RF2958
RF2958TR13
RF2958 PCBA
2.4GHz Spread-Spectrum Transceiver
2.4GHz Spread-Spectrum Transceiver (Tape & Reel)
Fully Assembled Evaluation Board
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Functional Block Diagram
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Rev A0 050209
11-263

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