Specifications and information are subject to change without notice
WJ Communications, Inc
• Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com
Page 1 of 7 February 2005
CV211-3
UMTS-band Dual-Branch Downconverter
Product Information
The Communications Edge
TM
Product Features
• High dynamic range downconverter
with integrated LO and IF amplifiers
• Dual channels for diversity
• +28 dBm Input IP3
• +11.5 dBm Input P1dB
• RF: 1900 – 2200 MHz
• IF: 65 – 200 MHz
• Single supply operation (+5 V)
• Pb-free 6mm 28-pin QFN package
• Low-side LO configuration
• Common footprint with other
PCS/UMTS/cellular versions
Product Description
The
CV211-3
is
a
dual-channel
high-linearity
downconverter
designed
to
meet
the
demanding
performance, functionality, and cost goals of current and
next generation mobile infrastructure basestations.
It
provides high dynamic range performance in a low profile
surface-mount leadless package that measures 6 x 6 mm
square.
It is ideally suited for high dynamic range receiver front
ends using diversity receive channels. Functionality
includes frequency conversion and IF amplification,
while an integrated LO driver amplifier powers the
passive mixer. The MCM is implemented with reliable
and mature GaAs MESFET and InGaP HBT technology.
Typical applications include frequency downconversion
used in W-CDMA 2.5G and 3G mobile base transceiver
stations.
Functional Diagram
Top View
Specifications
(1)
Parameters
Units
Min
Typ
Max
Comments
RF Frequency Range
MHz
1900 – 2200
LO Frequency Range
MHz
1700 – 2135
IF Frequency Range
MHz
65 – 200
See note 2
% Bandwidth around IF center frequency
%
±7.5
See note 3
IF Test Frequency
MHz
75
SSB Conversion Gain
dB
8
9.5
12
Temp = 25° C
Gain Drift over Temp (-40° C to 85° C)
dB
-1.5
±0.3
+1.5
Referenced to +25° C
Input IP3
dBm
+25
+28
See note 4
Input IP2
dBm
+33
+35
See note 4
Input 1 dB Compression Point
dBm
+11.5
See note 4
Noise Figure
dB
11.5
See note 5
LO Input Drive Level
dBm
-2.5
0
+2.5
LO-RF Isolation
dB
9
PLO = 0 dBm
LO-IF Isolation
dB
24
PLO = 0 dBm
Branch-Branch Isolation
dB
42
Return Loss: RF Port
dB
15
Return Loss: LO Port
dB
18
Return Loss: IF Port
dB
17
Operating Supply Voltage
V
+5
Supply Current
mA
320
380
475
Thermal Resistance
°C / W
27
Junction Temperature
°C
160
See note 6
1. Specifications when using the application specific circuit (shown on page 3) with a low side LO = 0 dBm and IF = 75 MHz in a downconverting application at 25
° C.
2. IF matching components affect the center IF frequency. Proper component values for other IF center frequencies than shown can be provided by emailing to applications.engineering@wj.com.
3. The IF bandwidth of the converter is defined as 15% around any center frequency in its operating IF frequency range. The bandwidth is determined with external components. Specifications are valid around
the total ±7.5% bandwidth. ie. with a center frequency of 80 MHz, the specifications are valid from 80 ± 6 MHz.
4. Assumes the supply voltage = +5 V. IIP3 is measured with
Δf = 1 MHz with RF
in = -5 dBm / tone.
5. Assumes LO injection noise is filtered at the thermal noise floor, -174 dBm/Hz, at the RF, IF, and Image frequencies.
6. The maximum junction temperature ensures a minimum MTTF rating of 1 million hours of usage.
Absolute Maximum Rating
Parameter
Rating
Operating Case Temperature
-40° to +85
° C
Storage Temperature
-55° to +150° C
DC Voltage
+5.5 V
Junction Temperature
+220 °C
Operation of this device above any of these parameters may cause permanent damage.
Ordering Information
Part No.
Description
CV211-3
UMTS-band Dual-Branch Downconverter
(leaded QFN Pkg)
CV211-3F
UMTS-band Dual-Branch Downconverter
(lead-free/RoHS-compliant QFN Pkg)
CV211-3PCB75
Fully-Assembled Application Board, IF = 75MHz
1
2
3
4
5
6
7
21
20
19
18
17
16
15
28
27
26
25
24
23
22
8
9
10
11
12
13
14
IF Amp 2
IF Amp 1
LO Driver Amp
BIAS
GND
N/C
GND
LO
GND
N/C
RF 1
INPUT
GND
BIAS
GND
N/C
GND
IF
IF
RF
RF
RF 2
INPUT
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