2-1
11
Product Description
Ordering Information
Typical Applications
Features
Functional Block Diagram
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Optimum Technology Matching® Applied
Si BJT
GaAs MESFET
GaAs HBT
Si Bi-CMOS
ü
SiGe HBT
Si CMOS
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
48
45
46
47
44
43
42
41
40
39
38
37
13
16
15
14
17
18
19
20
21
22
23
24
TX IF IN
RX IF IN
VCC1
TX EN
RX EN
PD
NC
NC
VCC9
TX VGC
IF LO
VCC8
NC
NC
RXQ DATA
QOUT
RXI DATA
IOUT
VCC4
TXQ DATA
TXQ BP
TXI DATA
TXI BP
IF1 OUT+
Σ
I
Q
I
Q
TX_EN
RX_EN
RX
TX
+45°
-45°
Β2
RF2938
2.4GHZ SPREAD-SPECTRUM TRANSCEIVER
•Wireless LANs
• Wireless Local Loop
• Secure Communication Links
• Inventory Tracking
• Wireless Security
• Digital Cordless Telephones
The RF2938 is a monolithic integrated circuit specifically
designed for direct-sequence spread-spectrum systems
operating in the 2.4GHz ISM band. The part includes a
direct conversion from IF receiver, quadrature demodula-
tor, I/Q baseband amplifiers with gain control and RSSI,
on-chip programmable baseband filters, dual data com-
parators. 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 maximum) battery applications are supported by
thepart. Thepartisalsodesignedtobe partofa2.4GHz
chip set consisting of the RF2444 LNA/Mixer and one of
the many RFMD high efficiency GaAs HBT PA’s and a
dual frequency synthesizer.
• 45MHz to 500MHz IF Quad Demod
• On-Chip Variable Baseband Filters
• Quadrature Modulator and Upconverter
• 2.7V to 3.6V Operation
• Part of 2.4GHz Radio Chipset
• 2.4GHz PA Driver
RF2938TR13
2.4GHz Spread-Spectrum Transceiver (Tape & Reel)
RF2938 PCBA
Fully Assembled Evaluation Board
2
Rev A8 010418
Dimensions in mm
9.00
+0.10
9.00
+0.20
0.22
+0.05
7° MAX
0° MIN
0.17 MAX.
0.60
0.15
0.10
+
0.10
0.00
1.00
+0.10
-A-
0.50
7.00
+0.10 sq.
4.57
+0.10 sq.
NOTES:
1. Shaded lead is Pin 1.
2. Lead coplanarity - 0.08 with respect to datum "A".
3. Leadframe material: EFTEC 64T copper or equivalent, 0.127 mm (0.005) thick.
4. Solder plating (85/15) on exposed area.
Exposed pad protrusion
0.0000 to 0.0127 (see note 4).
Package Style: TQFP-48 EDF, 9x9
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
