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CV211-2A Datasheet Preview

CV211-2A Datasheet

UMTS-band Dual-Branch Downconverter

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CV211-2A
UMTS-band Dual-Branch Downconverter
The Communications Edge TM
Product Information
Product Features
High dynamic range downconverter
with integrated LO and IF amplifiers
Dual channels for diversity
+30 dBm Input IP3
+12.5 dBm Input P1dB
RF: 1900 – 2200 MHz
IF: 65 – 300 MHz
+5V Single supply operation
Pb-free 6mm 28-pin QFN package
Low-side LO configuration
Common footprint with other
PCS/cellular versions
Specifications (1)
Product Description
The CV211-2A 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. 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
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
Top View
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 IP2
Input 1 dB Compression Point
Noise Figure
LO Input Drive Level
LO-RF Isolation
LO-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
dBm
dB
dBm
dB
dB
dB
dB
dB
dB
V
mA
°C / W
°C
Min
8
-1.5
+25
+33
-2.5
320
Typ
1900 – 2200
1600 – 2135
65 – 300
±7.5
240
10
±0.6
+30
+37
+12.5
11
0
12
26
44
15
18
14
+5
380
Max Comments
See note 2
See note 3
12 Temp = 25 °C
+1.5 Referenced to +25 °C
See note 4
See note 4
See note 4
See note 5
+2.5
PLO = 0 dBm
PLO = 0 dBm
475
27
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 maximum junction temperature ensures a minimum MTTF rating of 1 million hours of usage.
Absolute Maximum Rating
Ordering Information
Parameter
Operating Case Temperature
Storage Temperature
DC Voltage
Junction Temperature
Rating
-40 to +85 °C
-55 to +150 °C
+5.5 V
+220 °C
Part No.
CV211-2AF
CV211-2APCB75
CV211-2APCB240
Description
UMTS-band Dual-Branch Downconverter
(lead-free/RoHS-compliant 6x6mm QFN package)
Fully Assembled Eval. Board, IF = 75MHz
Fully Assembled Eval. Board, IF = 240MHz
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 9 March 2006




WJ Communication

CV211-2A Datasheet Preview

CV211-2A Datasheet

UMTS-band Dual-Branch Downconverter

No Preview Available !

CV211-2A
UMTS-band Dual-Branch Downconverter
The Communications Edge TM
Product Information
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 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 -8.7
20
35 9.0 80 -8.7 20.0 35 9
IF Amplifier
18.7 4.6
23 2.1 150 10.0 12.5
30 11
CV211-2A
Cumulative Performance
380* 10.0 12.5
30 11
* The 2nd branch includes another mixer and IF amplifier, which increases the total current consumption
of the MCM to be 380 mA.
Printed Circuit Board Material:
.014” FR-4, 4 layers, .062” total thickness
CV211-2A: 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. Further
details are given in the Application Note located on the website titled
“CV2xx Series - PWB Design Guidelines”.
External Diplexer: This is only used with the cellular-band CV
products. The mixer performs the diplexing internally for the
CV211-2A; 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
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.
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.
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 9 March 2006


Part Number CV211-2A
Description UMTS-band Dual-Branch Downconverter
Maker WJ Communication
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CV211-2A Datasheet PDF






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