Preliminary
RF2690
W-CDMA RECEIVE AGC
AND DEMODULATOR
7
Typical Applications
• W-CDMA Systems
Product Description
The RF2690 is an integrated complete IF AGC amplifier
and quadrature demodulator designed for the receive
section of W-CDMA applications. It is designed to amplify
received IF signals, while providing 70dB of gain control
range, a total of 90dB gain, and demodulation to base-
band I and Q signals. This circuit is designed as part of
RFMD’s single mode W-CDMA chipset, which includes
the RF9678 as modulator and IF AGC and the RF2638 as
upconvertor. The IC is manufactured on an advanced
25GHz F
T
Silicon 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°
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® Applied
Package Style: LCC, 20-Pin, 4x4
ü
Si Bi-CMOS
Si BJT
GaAs HBT
SiGe HBT
VGC2
VGC1
GaAs MESFET
Si CMOS
Features
• Digitally Controlled Power Down Mode
• 2.7V to 3.3V Operation
14 I OUT+
13 I OUT-
20
NC 2
NC 3
1
17
18
IF+
IF-
Gain
Control
• Digital LO Quadrature Divide-by-4
• IF AGC Amp with 70dB Gain Control
• 80dB Maximum Voltage Gain
W-CDMA IN+ 4
I/Q
W-CDMA IN- 5
Cal
15 ENCAL
16 FCLK
12 Q OUT+
Div
4
Mode Control
& Biasing
11 Q OUT-
19 VREF2V
6
VCC
8
LO
7
GND
9
EN WUP
10
EN RX
Ordering Information
RF2690
RF2690 PCBA
W-CDMA Receive AGC and Demodulator
Fully Assembled Evaluation Board
Functional 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
Rev A4 010918
7-39
RFMD [ RF MICRO DEVICES ]
