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RF2948BTR13 데이터시트 PDF




RF Micro Devices에서 제조한 전자 부품 RF2948BTR13은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 RF2948BTR13 자료 제공

부품번호 RF2948BTR13 기능
기능 2.4GHz SPREAD-SPECTRUM TRANSCEIVER
제조업체 RF Micro Devices
로고 RF Micro Devices 로고


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RF2948BTR13 데이터시트, 핀배열, 회로
0
Typical Applications
• IEEE 802.11b WLANs
• Wireless Residential Gateways
• Secure Communication Links
RF2948B
2.4GHz SPREAD-SPECTRUM TRANSCEIVER
• High Speed Digital Links
• Wireless Security
• Digital Cordless Telephones
Product Description
The RF2948B is a monolithic integrated circuit specifi-
cally designed for direct-sequence spread-spectrum sys-
tems operating in the 2.4GHz ISM band. The part
includes: a direct conversion from IF receiver with vari-
able gain control; quadrature demodulator; I/Q baseband
amplifiers; and, on-chip programmable baseband filters.
For the transmit side, a QPSK modulator and upconverter
are provided. The design reuses the IF SAW filter for
transmit and receive reducing the number of SAW filters
required. Two-cell or regulated three-cell (3.6V maxi-
mum) battery applications are supported by the part. The
part is also designed to be part of a 2.4GHz chipset con-
sisting of the RF2494 LNA/Mixer, one of the many RFMD
high-efficiency GaAs HBT PA’s and the RF3000 Base-
band Processor.
2 PLCS
-A-
5.00 SQ.
0.10 C A
2.50 TYP.
3 2 PLCS
0.10 C B
0.05 C
0.90
0.85
0.70
0.65
0.05
0.00
2 PLCS
0.10 C B
-B-
2 PLCS
0.10 C A
4.75 SQ.
2.37 TYP.
Shaded lead is pin 1.
0.60
0.24
TYP.
Dimensions in mm.
0.50
0.30
12°
MAX
-C-
0.10 M C A B
0.30 2
0.18
Pin 1 ID
R.20
3.45
3.15
SQ.
0.50
SEATING
PLANE
Optimum Technology Matching® Applied
Si BJT
9Si Bi-CMOS
GaAs HBT
SiGe HBT
GaAs MESFET
Si CMOS
InGaP/HBT
GaN HEMT
SiGe Bi-CMOS
PD 1
RX EN 2
RX IF BIAS 3
VCC1 4
RX IF IN 5
TX IF IN 6
VCC9 7
TX VGC 8
32 31
30
29
BW
Control
Logic
REF
÷2
Phase
Splitter
9
10 11 12
13
28 27
26
25
DC
Feedback
gm-C
LPF
DC
Feedback
gm-C
LPF
TX
Bias
Σ
14 15 16
24 I OUT
23 VCC4
gm-C
LPF
22 TXQ DATA
21 TXQ BP
gm-C
LPF
20 TXI DATA
19 TXI BP
18 IF1 OUT+
17 IF1 OUT-
Functional Block Diagram
Package Style: QFN, 32-Pin, 5x5
Features
• 45MHz to 500MHz IF Quad Demod
• On-Chip Variable Baseband Filters
• Quadrature Modulator and Upconverter
• 2.7V to 3.6V Operation
• Part of IEEE802.11b Chipset
• 2.4GHz PA Driver
Ordering Information
RF2948B
2.4GHz Spread-Spectrum Transceiver
RF2948BTR13 2.4GHz Spread-Spectrum Transceiver (Tape & Reel)
RF2948B PCBA 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 A6 040930
NOT FOR NEW DESIGNS
11-239




RF2948BTR13 pdf, 반도체, 판매, 대치품
RF2948B
Parameter
Transmit Power Amp
Linear Output Power
Gain
Output P1dB
Output Impedance
Input Impedance
Power Down Control
Logical Controls “ON”
Logical Controls “OFF”
Control Input Impedance
RX VGC Response TIme
RX EN Response TIme
TX EN Response TIme
VPD to RX Response TIme
VPD to TX Response TIme
Specification
Min.
Typ.
Max.
10
VCC - 0.3 V
-0.3
6
9
12
50
50
0
>1
200
2
330
1.33
50
VCC + 0.3 V
0.3
IF LO Input
Input Impedance
Input Power Range
Input Frequency
RF LO Input
Input Impedance
Input Power Range
Input Frequency
VREF1 Buffered
Source/Sink Current
Output Voltage
VREF1
Power Supply
Voltage
Total Current Consumption
Sleep Mode Current
PA Driver Current
RX Current
BW (MHz)
9
12-20
20-30
TX Current
BW (MHz)
9
12-20
20-30
-15
90
-10
2000
VREF1 - 10
1.6
2.7
1050-j1200
-10
33-j110
1.7
3.3
1
18
65
70
110
95
105
115
0
1000
0
2400
1
VREF1 + 10
1.8
3.6
85
136
Unit
dBm
dB
dBm
V
V
M
ns
µs
ns
ms
µs
dBm
MHz
dBm
MHz
mA
mV
V
V
µA
mA
mA
mA
mA
mA
mA
mA
Condition
Nominal
Nominal
Voltage supplied to the input, not to exceed
3.6 V.
Voltage supplied to the input.
Full step in gain, to 90% of final output level.
I/Q output VALID
To IF output VALID
To I/Q output VALID
To IF output VALID
The IF LO is divided by 2 and split into
quadrature signals to drive the frequency
mixers.
f = 748 MHz
peak
(2x IF Frequency)
f=2.04GHz unmatched.
VCC=3.3V, Baseband BW 1MHz to 40MHz
PD=0, RX EN=1
TX EN=1
11-242
Rev A6 040930

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RF2948BTR13 전자부품, 판매, 대치품
RF2948B
Pin
31
32
Pkg
Base
Function
VREF 1
RX VGC
ESD
Description
This is a bypass pin for the bias circuits of the GmC filter amps and for
I/Q inputs. No current should be drawn from this pin (<10µA). 1.7V
nominal.
Receiver IF and baseband amp gain control voltage. Negative slope.
Ground for all circuitry in the device. A very low inductance from the
base to the PCB groundplane is essential for good performance. Use
an array of vias immediately underneath the device.
This diode structure is used to provide electrostatic discharge protec-
tion to 3kV using the Human body model. The following pins are pro-
tected: 1-4, 7, 8, 10, 19-32.
Interface Schematic
VCC
Rev A6 040930
11-245

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관련 데이터시트

부품번호상세설명 및 기능제조사
RF2948BTR13

2.4GHz SPREAD-SPECTRUM TRANSCEIVER

RF Micro Devices
RF Micro Devices

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