Dual-Branch Downconverter. CV221-2A Datasheet

CV221-2A Downconverter. Datasheet pdf. Equivalent

Part CV221-2A
Description Dual-Branch Downconverter
Feature www.DataSheet4U.com CV221-2A 1.9 – 2.7 GHz Dual-Branch Downconverter Product Features • High dyna.
Manufacture WJ Communication
Total Page 5 Pages
Datasheet
Download CV221-2A Datasheet



CV221-2A
CV221-2Awww.DataSheet4U.com
1.9 – 2.7 GHz Dual-Branch Downconverter
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 – 2700 MHz
IF: 65 – 300 MHz
+5V Single supply operation
RoHS-compliant / Pb-free
6x6mm 28-pin QFN package
Low-side LO configuration
Specifications (1)
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.
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.
RF 1
INPUT
1
GND 2
28 27 26
IF
RF
BIAS 3
GND 4
GND 5
GND 6
RF 2 7
INPUT RF
8
IF
9 10
25 24 23 22
IF Amp 1
LO Driver Amp
IF Amp 2
11 12 13 14
21 BIAS
20 GND
19 GND
18 GND
17 LO
16 GND
15 GND
Typical applications include frequency downconversion
used in 3G W-CDMA and WiMax basestation
transceiver or repeater applications.
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 Max
1900 – 2400
1600 – 2335
65 – 300
±7.5
240
6.5 9.2 10.5
±0.6
+24 +28
+11.5
11
-2.5 0 +2.5
12
26
25
45
14
14
13
+5
315 330
34
160
Min Typ Max
2500 – 2700
2200 – 2565
135 – 300
Comments
See note 2
±12 See note 3
155
5.4 8.4 9.9 Temp = 25 °C
±0.6 Referenced to +25 °C
+17 +22
See note 4
+8.0 See note 4
13 See note 5
-2.5 0 +2.5
9 PLO = 0 dBm
26 PLO = 0 dBm
25
40
12
14
10
+5
315 330 See note 6
34
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 = 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
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.
CV221-2AF
CV221-2APCB240
Description
1.9-2.7GHz Dual-Branch Downconverter
(lead-free/RoHS-compliant 6x6mm QFN package)
Fully Assembled Eval. Board, IF = 240MHz
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



CV221-2A
CV221-2Awww.DataSheet4U.com
1.9 – 2.7 GHz Dual-Branch Downconverter
Device Architecture / Application Circuit Information
RF 1
INPUT
1
GND 2
28 27 26
IF
RF
BIAS 3
GND 4
N/C 5
GND 6
RF 2 7
INPUT RF
8
IF
9 10
25 24 23 22
IF Amp 1
LO Driver Amp
IF Amp 2
11 12 13 14
21 BIAS
20 GND
19 N/C
18 GND
17 LO
16 GND
15 N/C
Typical 2.1 GHz Downconverter Performance Chain Analysis (Each Branch)
Stage
Gain
(dB)
Input
P1dB
(dBm)
Input
IP3
(dBm)
Cumulative Performance
NF
(dB)
Current
(mA)
Gain
(dB)
Input
P1dB
(dBm)
Input
IP3
(dBm)
NF
(dB)
LO Amp / MMIC Mixer -8.4
20
33 9 115 -8.4 20
33 9
IF Amplifier
17.6 1
21 2.2 100 9.2
9
27.8 11
CV221-2A
Cumulative Performance
315* 9.2
9
27.8 11
* The 2nd branch includes another mixer and IF amplifier, which increases the total current consumption
of the MCM to be 315 mA.
Printed Circuit Board Material:
.014” FR-4, 4 layers, .062” total thickness
CV221-2A: The application circuit can be broken up into three main
functions as denoted in the colored dotted areas above: RF/IF diplexing
(blue), IF amplifier matching (green), and dc biasing (purple). There are
various placeholders for chip components in the circuit schematic so that
a common PCB can be used for all WJ dual-branch converters.
of 5 to 10%, a simple two element matching network, in the form of
either a high-pass or low-pass filter structure, is sufficient to match
the MMIC IF amplifier over these narrow bandwidths. Proper
component values for other IF center frequencies can be provided by
emailing to applications.engineering@wj.com.
External Diplexer: This is only used with the cellular-band CV
products. The mixer performs the diplexing internally for the
CV221-2A; therefore the components shown in the diplexer section
should be not be loaded except for L3, L10, L7, and L11, which
should contain a 0 Ω jumper.
IF Amplifier Matching: The IF amplifier requires matching
elements to optimize the performance of the amplifier to the desired
IF center frequency. Since IF bandwidths are typically on the order
DC Biasing: DC bias must be provided for the LO and IF amplifiers
in the converter. R1 sets the operating current for the last stage of the
LO amplifier and is chosen to optimize the mixer LO drive level.
Proper RF chokes and bypass capacitors are chosen for proper
amplifier biasing at the intended frequency of operation. The “+5 V”
dc bias should be supplied directly from a voltage regulator.
WiMax Operation: There is no change to the application circuit for
operation in the 2.5 to 2.7 GHz band.
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 2 of 5 June 2007





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