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RF2689 Datasheet

  • RF2689

  • W-CDMA/GSM/DCS RECEIVE AGC AND DEMODULATOR

  • 20頁

  • RFMD

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Preliminary
7
Typical Applications
鈥?Multimode W-CDMA/GSM/DCS/EDGE
鈥?W-CDMA Systems
鈥?GSM Systems
RF2689
W-CDMA/GSM/DCS RECEIVE AGC
AND DEMODULATOR
Product Description
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鈥檚 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 F
T
Sili-
con Bi-CMOS process, and is packaged in a 20-pin,
4mmx4mm, leadless chip carrier.
1.00
0.90
0.60
0.24 typ
4.00
sq.
0.65
0.30
4 PLCS
3 0.20
2.10
sq.
12擄
MAX
0.05
Dimensions in mm.
0.75
0.50
0.50
Note orientation of package.
0.23
0.13
4 PLCS
7
QUADRATURE
DEMODULATORS
NOTES:
1 Shaded lead is Pin 1.
2 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.
3
Dimension applies to plated terminal: to be measured between 0.02 mm
and 0.25 mm from terminal end.
4 Package Warpage: 0.05 mm max.
5 Die Thickness Allowable: 0.305 mm max.
Optimum Technology Matching廬 Applied
Package Style: LCC, 20-Pin, 4x4
眉
Si Bi-CMOS
Si BJT
GaAs HBT
SiGe HBT
GaAs MESFET
Si CMOS
Features
鈥?Digitally Controlled Power Down Mode
鈥?2.7V to 3.3V Operation
14 I OUT+
13 I OUT-
VGC2
VGC1
20
1
17
18
IF+
IF-
GSM IN+ 2
GSM IN- 3
DIV2
W-CDMA IN+ 4
W-CDMA IN- 5
Gain
Control
鈥?Digital LO Quadrature Divide-by-8
鈥?IF AGC Amp with 70dB Gain Control
鈥?80dB Maximum Voltage Gain
15 CALEN
I/Q
Cal
16 FCLK
12 Q OUT+
Div
12 or 4
Mode Control
& Biasing
11 Q OUT-
DIV2
19 VREF2V
6
VCC
8
LO
7
MODE A
9
MODE B
10
EN RX
Ordering Information
RF2689
RF2689 PCBA
W-CDMA/GSM/DCS 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 A4 010815
7-39

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