RF2667
7
Typical Applications
• CDMA/FM Cellular Systems
• CDMA PCS Systems
• GSM/DCS Systems
• TDMA Systems
• Spread-Spectrum Cordless Phones
• Wireless Local Loop Systems
RECEIVE AGC AND DEMODULATOR
Product Description
The RF2667 is an integrated complete IF AGC amplifier
and quadrature demodulator developed for the receive
section of dual-mode CDMA/FM cellular and PCS appli-
cations and for GSM/DCS and TDMA systems. It is
designed to amplify received IF signals, while providing
100dB of gain control range, and demodulate to base-
band I and Q signals. Noise figure, IP
3
, and other specifi-
cations are designed to be compatible with the IS-98, and
J-STD-018 Interim Standard for CDMA cellular communi-
cations. This circuit is part of the RFMD line of complete
solutions for digital radio applications. The IC is manufac-
tured on an advanced 15GHz F
T
Silicon Bipolar process,
and is packaged in a standard miniature 24-lead plastic
QSOP package.
Optimum Technology Matching® Applied
0.157
0.150
-A-
0.0098
0.0040
0.012
0.008
0.344
0.337
0.025
0.2440
0.2284
Dimensions in inches.
0.0688
0.0532
7
QUADRATURE
DEMODULATORS
8° MAX
0° MIN
0.050
0.016
0.0098
0.0075
NOTES:
1. Shaded lead is Pin 1.
2. All dimensions are excluding mold flash.
3. Lead coplanarity: 0.005 with respect to datum "A".
ü
Si BJT
Package Style: QSOP-24
GaAs HBT
SiGe HBT
GaAs MESFET
Si CMOS
Si Bi-CMOS
Features
• Similar to RF9957with Higher I/Q Output
Voltage
FL+
GC
23
19
• Supports Dual Mode Operation
• Digitally Controlled Power Down Mode
16 Q OUT+
15 Q OUT-
CDMA IN+ 4
CDMA IN- 5
IN SEL 14
FM IN+ 8
FM IN- 9
Input
Select
Gain
Control
• 2.7V to 3.3V Operation
• IF AGC Amp with 100dB Gain Control
Quad.
÷2
13 LO+
12 LO-
21 I OUT+
Band Gap
Reference
22 I OUT-
Ordering Information
24
PD
18
FL-
10
BG OUT
RF2667
RF2667 PCBA
Receive AGC and Demodulator
Fully Assembled Evaluation Board
Functional 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
Rev A14 010622
7-1
RFMD [ RF MICRO DEVICES ]
