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參數(shù)資料
| 型號(hào)： | RF2668 |
| 廠商： | RF MICRO DEVICES INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | CDMA/FM TRANSMIT MODULATOR, IF AGC, AND UPCONVERTER WITH INTEGRATED PLL |
| 中文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT |
| 封裝： | 7 X 7 MM, PLASTIC, LQFP-48 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 430K |
| 代理商： | RF2668 |
5-71
5
M
U
Preliminary
Produc t Desc ription
Ordering Information
Typic al Applic ations
Features
Func tional Block Diagram
RF Micro Devices, Inc.
7625 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
Band Gap
Rel
Bias
Supply
Quad
/2
Σ
B
V
M
C
T
M
V
P
P
V
O
S
48
45
46
47
44
43
42
41
40
39
38
37
N
M
M
G
A
V
V
G
Q
Q
I
I
13
16
15
14
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
10
11
12
NC
NC
RFOUT
VCC4
LO2+
LO2-
GND2
GND2
MIX_DEC
MIX IN+
MIX IN-
NC
36
35
34
33
32
31
30
29
28
27
26
25
SET2
PLLVCC
PLLGND
LD
DO
VCO+
VCO-
LO1+
LO1-
VCC1
VCO_ISET
NC
Lock
Detect
/R
/N
Charge
Pump
RF2668
CDMA/FM TR ANSMIT MODULAT OR, IF AGC ,
AND UPCONVER TER WIT H INT E GR ATED PLL
CDMA/FM Cellular and PCS Systems
Tri-Mode/Dual-Band CDMA Applications
W-CDMA Systems
Wireless Local Loop Systems
Spread-Spectrum Cordless Phones
High Speed Data Modems
The RF2668 is an integrated complete quadrature modu-
lator, IF AGC amplifier, upconverter, and PLL, designed
for the transmit section of dual-mode CDMA/FM cellular,
PCS, and tri-mode CDMA applications. It is designed to
modulate baseband I and Q signals, amplify the resulting
IF signals while providing 95dB of gain control range, and
perform the final upconversion to UHF. Noise Figure, IP
3
,
and other specifications are designed to be compatible
with the IS-98 Interim Standard. This circuit is designed
as part of RFMD’s newest CDMA chipset, which also
includes the RF2667 CDMA/FM Receive IF AGC and
Demodulator. The IC is manufactured on an advanced
18GHz F
T
Silicon Bipolar process, and is supplied in a
48-lead plastic LQFP package.
Supports Tri-Mode Operation
Digitally Controlled Power Down Modes
2.7V to 3.3V Operation
Digital First LO Quadrature Divider
Double-Balanced UHF Upconvert Mixer
IF AGC Amp with 95dB Gain Control
RF2668
CDMA/FM Transmit Modulator, IF AGC, and
Upconverter with Integrated PLL
Fully Assembled Evaluation Boards
Fully Assembled Evaluation Boards
RF2668 PCBA-PCS/CEL
RF2668 PCBA-DO
5
Rev B4 010423
9.00
+ 0.20
sq.
0.22
+ 0.05
7.00
+ 0.10 sq.
7° MAX
0° MIN
0.35
0.25
0.50
1.40
+ 0.05
0.127
0.60
0.15
0.10
+
Package S tyle: LQFP-48_7 x 7
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