7-39
7
Preliminary
Product Description
Ordering Information
Typical Applications
Features
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
Optimum Technology Matching® Applied
Si BJT
GaAs MESFET
GaAs HBT
Si Bi-CMOS
ü
SiGe HBT
Si CMOS
7
Gain
Control
DIV2
Div
12 or 4
DIV2
I/Q
Cal
Mode Control
&Biasing
8
4
W-CDMA IN+
2
GSM IN+
6
20
1
17
14 I OUT+
15 CALEN
16 FCLK
11 Q OUT-
19 VREF2V
10
3
GSM IN-
5
W-CDMA IN-
9
12 Q OUT+
13 I OUT-
18
RF2689
W-CDMA/GSM/DCS RECEIVE AGC
AND DEMODULATOR
• Multimode W-CDMA/GSM/DCS/EDGE
• W-CDMA Systems
• GSM Systems
The RF2689 is an integrated complete IF AGC amplifier
and quadrature demodulator designed for the receive
section of W-CDMA and GSM/DCS applications. It is
designed to amplify received IF signals, while providing
70dB of gain control range, a total of 90dB gain, and
demodulate to baseband I and Q signals. This circuit is
designed as part of RFMD’s multimode W-CDMA/GSM/
DCS chipset, which also includes the RF2688 W-CDMA/
GSM/DCS transmit modulator and IF AGC/Upconverter.
The IC is manufactured on an advanced 25GHz FT Sili-
con Bi-CMOS process, and is packaged in a 20-pin,
4 mmx4mm, leadless chip carrier.
• Digitally Controlled Power Down Mode
• 2.7V to 3.3V Operation
• Digital LO Quadrature Divide-by-8
• IF AGC Ampwith70dBGainControl
• 80dB Maximum Voltage Gain
RF2689
W-CDMA/GSM/DCS Receive AGC and Demodulator
RF2689 PCBA
Fully Assembled Evaluation Board
7
Rev A4 010815
1.00
0.90
4.00
sq.
0.60
0.24 typ
3
0.20
0.75
0.50
0.23
0.13
4PLCS
0.50
2.10
sq.
0.65
0.30
4PLCS
0.05
12°
MAX
Dimensions in mm.
Note orientation of package.
NOTES:
Package Warpage: 0.05 mm max.
4
Die Thickness Allowable: 0.305 mm max.
5
Pin 1 identifier must exist on top surface of package by identification
mark or feature on the package body. Exact shape and size is optional.
2
Shaded lead is Pin 1.
1
Dimension applies to plated terminal: to be measured between 0.02 mm
and 0.25 mm from terminal end.
3
Package Style: LCC, 20-Pin, 4x4
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