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參數資料
| 型號： | RF9958PCBA |
| 廠商： | RF Micro Devices, Inc. |
| 英文描述： | CDMA/FM TRANSMIT MODULATOR, IF AGC, AND UPCONVERTER |
| 中文描述： | 碼分多址/調頻發射調制器，中頻AGC和上變頻 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 129K |
| 代理商： | RF9958PCBA |
5-93
5
M
U
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
Gain
Control
Band Gap
Reference
G
1
M
MOD OUT+
10
P
Q SIG
Q REF
I REF
I SIG
LO1-
LO1+
13
P
L
L
17
Quad.
÷
2
27
G
R
Σ
MOD OUT-
MIX IN-
MIX IN+
24
25
20
19
22
21
15
8
9
2
3
5
4
RF9958
CDMA/FM TR ANSMIT MODULAT OR, IF AGC ,
AND UPCONVER T ER
CDMA/FM Cellular Systems
CDMA PCS Systems
Wireless Local Loop Systems
Spread Spectrum Cordless Phones
High Speed Data Modems
General Purpose Digital Transmitters
The RF9958 is an integrated complete Quadrature Modu-
lator, IF AGC amplifier, and Upconverter designed for the
transmit section of dual-mode CDMA/FM cellular and
PCS applications. It is designed to modulate baseband I
and Q signals, amplify the resulting IF signals while pro-
viding 95dB of gain control range, and perform the final
upconversion to UHF. Noise Figure, IP
3
, and other specifi-
cations are designed to be compatible with the IS-98
Interim Standard for CDMA cellular communications. This
circuit is designed as part of RFMD’s newest CDMA Chip
Set, which also includes the RF9957 CDMA/FM Receive
IF AGC and Demodulator. The IC is manufactured on an
advanced 15GHz F
T
Silicon Bipolar process, and is sup-
plied in a 28-lead plastic SSOP package.
Supports Dual 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 95 dB Gain Control
RF9958
CDMA/FM Transmit Modulator, IF AGC, and Upcon-
verter
Fully Assembled Evaluation Board
RF9958 PCBA
5
Rev B11 010720
6.20
5.79
3.99
3.81
10.01
9.80
7°
8°
0°
1.27
0.38
0.25
0.10
1.73
1.47
0.635
TYP
0.36
0.25
0.10
PIN 1
INDENT
NOTES:
1. Shaded lead is Pin1.
2. Lead frame material: Copper 194
3. Mold flash shall not exceed 0.006 (0.15 mm) per end.
4. Interlead flash shall not exceed 0.010 (0.25 mm) per side.
5. All dimensions are excluding mold flash and protrusions.
Package S tyle: QSOP-28
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