RF9957 Datasheet, PDF (1/10 Pages) RF Micro Devices – CDMA/FM RECEIVE AGC AND DEMODULATOR

7
Typical Applications
• CDMA/FM Cellular Systems
• CDMA PCS Systems
• Wireless Local Loop Systems
RF9957
CDMA/FM RECEIVE AGC AND DEMODULATOR
• Spread-Spectrum Cordless Phones
• High Speed Data Modems
• General Purpose Digital Receivers
Product Description
The RF9957 is an integrated complete IF AGC amplifier
0.157
0.150
0.0098
0.0040
and Quadrature Demodulator designed for the receive
section of dual-mode CDMA/FM cellular and PCS appli-
cations. It is designed to amplify received IF signals, while
providing 100dB of gain control range, and demodulate to
1
0.344
0.337
0.012
0.008
baseband I and Q signals. Noise Figure, IP₃, and other
specifications are designed to be compatible with the IS-
98 and J-STD-018 Interim Standard for CDMA cellular
communications. The IC is manufactured on an advanced
0.025
7
0.2440
0.2284
0.0688
0.0532
15GHz F_T Silicon Bipolar process, and is packaged in a
standard miniature 24-lead plastic SSOP package.
8°MAX
0°MIN
0.050 0.0098
0.016 0.0075
Optimum Technology Matching® Applied
ü^{Si BJT}
GaAs HBT
GaAs MESFET
Si Bi-CMOS
SiGe HBT
Si CMOS
CDMA IN+ 4
CDMA IN- 5
IN SEL 14
Input
Select
FM IN+ 8
FM IN- 9
23
19
Gain
Control
Band Gap
Reference
10
24
18
Quad.
÷2
16 Q OUT+
15 Q OUT-
13 LO+
12 LO-
21 I OUT+
22 I OUT-
Package Style: SSOP-24
Features
• Supports Dual Mode Operation (CDMA
and FM)
• Digitally Controlled Power Down Mode
• 2.7V to 3.3V Operation
• Quadrature LO Divider
• IF AGC Amp with 100dB Gain Control
Ordering Information
RF9957
CDMA/FM Receive AGC and Demodulator
RF9957 PCBA Fully Assembled Evaluation Board
Functional Block Diagram
RF Micro Devices, Inc.
7625 Thorndike Road
Greensboro, NC 27409, USA
Tel [phone]
Fax [phone]
http://www.rfmd.com
Rev C11 010622
7-27