CV221-2A
Product Features
•
High dynamic range downconverter
with integrated LO and IF amplifiers
The Communications Edge
TM
Product Information
1.9 – 2.4 GHz Dual-Branch Downconverter
Product Description
The CV221-2A is a dual-channel high-linearity down-
converter designed to meet the demanding performance,
functionality, and cost goals of current and next generation
mobile infrastructure basestations and repeaters. It
provides high dynamic range performance in a low profile
RoHS-compliant/lead-free 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 and WiBro 2.5G and 3G basestation
transceiver or repeater applications.
Functional Diagram
AMP1
INPUT
IF1
OUTPUT
23
GND
MIXER
IF1
GND
28
RF 1
1
INPUT
GND 2
BIAS 3
GND 4
GND 5
GND 6
RF 2 7
INPUT
27
GND
26
25
24
•
•
•
•
•
•
•
Dual channels for diversity
+28 dBm Input IP3
+9 dBm Input P1dB
RF: 1900 – 2400 MHz
IF: 65 – 300 MHz
+5V Single supply operation
RoHS-compliaint / Pb-free
6x6mm 28-pin QFN package
•
Low-side LO configuration
RF
IF
IF Amp 1
GND
22
21 BIAS
20 GND
19 GND
18 GND
17 LO
16 GND
15 GND
14
GND
LO Driver Amp
IF Amp 2
RF
8
GND
9
MIXER
IF2
IF
10
GND
11
AMP2
INPUT
12
GND
13
IF2
OUTPUT
Specifications
(1)
Parameters
RF Frequency Range
LO Frequency Range
IF Frequency Range
% Bandwidth around IF center frequency
IF Test Frequency
SSB Conversion Gain
Gain Drift over Temp (-40 to 85 °C)
Input IP3
Input 1 dB Compression Point
Noise Figure
LO Input Drive Level
LO-RF Isolation
LO-IF Isolation
RF-IF Isolation
Branch-Branch Isolation
Return Loss: RF Port
Return Loss: LO Port
Return Loss: IF Port
Operating Supply Voltage
Supply Current
Thermal Resistance
Junction Temperature
Units
MHz
MHz
MHz
%
MHz
dB
dB
dBm
dBm
dB
dBm
dB
dB
dB
dB
dB
dB
dB
V
mA
°C / W
°C
Min
Typ
1900 – 2400
1600 – 2335
65 – 300
±7.5
240
9.2
±0.6
+28
+9
11
0
12
26
25
45
14
14
13
+5
315
Max
Comments
See note 2
See note 3
6.5
+24
10.5
Temp = 25 °C
Referenced to +25 °C
See note 4
See note 4
See note 5
P
LO
= 0 dBm
P
LO
= 0 dBm
-2.5
+2.5
330
34
160
See note 6
See note 6
1. Specifications when using the application specific circuit (shown on page 3) with a low side LO = 0 dBm and IF = 240 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 240 MHz, the specifications are valid from 240 ± 18 MHz.
4. Assumes the supply voltage = +5 V. IIP3 is measured with
Δf
= 1 MHz with RFin = -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 R1 resistor can be modified for the CV221-2A to draw less current. Changing it from 13 to 18Ω is expected to have the converter draw 17mA less current so that the converter will draw about 300mA
typically under LO drive, while degrading the IIP3 performance by 0.5 dB.
Absolute Maximum Rating
Parameter
Operating Case Temperature
Storage Temperature
DC Voltage
Junction Temperature
-40 to +85
°C
-55 to +150 °C
+5.5 V
+220 °C
Rating
Ordering Information
Part No.
CV221-2AF
Description
UMTS-band Dual-Branch Downconverter
(lead-free/RoHS-compliant 6x6mm QFN package)
CV221-2APCB240 Fully Assembled Eval. Board, IF = 240MHz
Specifications and information are subject to change without notice
Operation of this device above any of these parameters may cause permanent damage.
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 5 May 2006
WJCI [ WJ COMMUNICATION. INC. ]
