CV221-2A
1.9 – 2.7 GHz Dual-Branch Downconverter
Product Features
Product Description
Functional Diagram
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.
• High dynamic range downconverter
with integrated LO and IF amplifiers
28
27
26
24
23
22
25
RF 1
INPUT
IF
1
2
3
4
5
6
7
BIAS
GND
GND
GND
LO
21
20
19
18
17
16
15
• Dual channels for diversity
• +28 dBm Input IP3
• +11.5 dBm Input P1dB
• RF: 1900 – 2700 MHz
• IF: 65 – 300 MHz
• +5V Single supply operation
• RoHS-compliant / Pb-free
6x6mm 28-pin QFN package
RF
GND
BIAS
GND
GND
GND
IF Amp 1
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.
LO Driver Amp
IF Amp 2
GND
GND
RF 2
INPUT
IF
RF
8
9
10
12
13
14
11
• Low-side LO configuration
Typical applications include frequency downconversion
used in 3G W-CDMA and WiMax basestation
transceiver or repeater applications.
Specifications (1)
Parameters
Units
Min
Typ
Max
Min
Typ
Max Comments
RF Frequency Range
LO Frequency Range
IF Frequency Range
% Bandwidth around IF center
frequency
MHz
MHz
MHz
1900 – 2400
1600 – 2335
65 – 300
2500 – 2700
2200 – 2565
135 – 300
See note 2
See note 3
%
MHz
dB
±7.5
240
9.2
±12
155
8.4
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
6.5
+24
-2.5
10.5
+2.5
5.4
+17
-2.5
9.9
Temp = 25 °C
dB
dBm
dBm
dB
dBm
dB
±0.6
+28
+11.5
11
0
12
±0.6
+22
+8.0
13
0
9
Referenced to +25 °C
See note 4
See note 4
See note 5
+2.5
PLO = 0 dBm
PLO = 0 dBm
dB
26
26
RF-IF Isolation
dB
25
25
Branch-Branch Isolation
Return Loss: RF Port
Return Loss: LO Port
Return Loss: IF Port
Operating Supply Voltage
Supply Current
dB
dB
dB
dB
45
14
14
13
+5
315
40
12
14
10
+5
315
V
mA
°C / W
°C
330
34
160
330
34
160
See note 6
See note 6
Thermal Resistance
Junction Temperature
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
Ordering Information
Parameter
Rating
Part No.
CV221-2AF
Description
Operating Case Temperature
Storage Temperature
DC Voltage
-40 to +85 °C
-55 to +150 °C
+5.5 V
1.9-2.7GHz Dual-Branch Downconverter
(lead-free/RoHS-compliant 6x6mm QFN package)
CV221-2APCB240 Fully Assembled Eval. Board, IF = 240MHz
Junction Temperature
+220 °C
Operation of this device above any of these parameters may cause permanent damage.
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 5 June 2007
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