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參數資料
| 型號： | RF2908 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | 915MHZ SPREAD SPECTRUM RECEIVER WITH PLL FREQUENCY SYNTHESIZER |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, PQFP48 |
| 封裝： | PLASTIC, LQFP-48 |
| 文件頁數： | 1/18頁 |
| 文件大小： | 534K |
| 代理商： | RF2908 |
11-85
11
T
Produc t Desc ription
Ordering Information
Typic al Applic ations
Features
Func tional 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 HBT
Si Bi-CMOS
SiGe HBT
GaAs MESFET
Si CMOS
LNA
+45°
-45°
IF Amp
Q Data Amp
I Data Amp
PLL
Freq. Synth.
Ref
RSSI
Gain Control
39
42
19
21
6
1,2
IF Amp
11,12
13,14
IN I±
47,48
Q DATA
IF OUT Q
IF OUT I
I DATA
MOUT Q±
IN Q±
MOUT I±
LNA IN
24
23
Refer to the Detailed Functional Block Diagram for description of full functionality
RF2908
915MHZ S PR EAD S PECT R UM RECEIVER WIT H
PLL FR EQUENCY S Y NT HESIZER
Digital Cordless Telephones
Secure Communication Links
Wireless LANs
Inventory Tracking
Wireless Security
Battery Powered Applications
The RF2908 is a monolithic integrated circuit specifically
designed for direct-sequence spread-spectrum systems
operating in the 902MHz to 928MHz ISM band. The part
includes a direct conversion receiver, quadrature demod-
ulator, dual IF amplifiers with gain control and RSSI, on-
chip programmable baseband filters, dual data compara-
tors, and a serially programmable 86-channel PLL fre-
quency synthesizer. Two cell or regulated three cell (3.6V
maximum) battery applications are supported by the part.
The part is also designed to operate in compliance with
FCC Part 15.247. The device is provided in 48-lead plas-
tic LQFP packaging.
FCC Part 15.247 Compliant
Direct Conversion Receiver
On-Chip 86 Channel Frequency
Synthesizer
On-Chip Selectable IF Bandwidths
2.7V to 3.6V Operation
RF2908
915MHz Spread Spectrum Receiver with PLL Fre-
quency Synthesizer
11
Rev C1 010904
.362
.346
.280
.272
7°MAX
0°MIN
.007
MAX
.011
.007
.362
.346
.280
.272
.057
.053
.006
.002
.020
.031
.021
Package S tyle: LQFP-48
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