CV211-2A 데이터 시트보기 (PDF) - WJ Communications => Triquint
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CV211-2A Datasheet PDF : 9 Pages
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CV211-2A
UMTS/WiMax-band Dual-Branch Downconverter
The Communications Edge TM
Product Information
IF Amplifier Matching: The IF amplifier requires matching DC biasing: DC bias must be provided for the LO and IF amplifiers
elements to optimize the performance of the amplifier to the desired in the converter. R1 sets the operating current for the last stage of the
IF center frequency. Since IF bandwidths are typically on the order LO amplifier and is chosen to optimize the mixer LO drive level.
of 5 to 10%, a simple two element matching network, in the form of Proper RF chokes and bypass capacitors are chosen for proper
either a high-pass or low-pass filter structure, is sufficient to match amplifier biasing at the intended frequency of operation. The “+5 V”
the MMIC IF amplifier over these narrow bandwidths.
dc bias should be supplied directly from a voltage regulator.
Application Circuit: IF = 75 MHz (CV211-2APCB75)
RF = 1900 – 2700 MHz, IF = 75 MHz
PCB Layout
Bill of Materials
Ref. Desig.
Component
R1
11.3 Ω chip resistor
R2, R3, R4, L3, L7
L10, L11
0 Ω chip resistor
R6, R7
3.3 Ω chip resistor
C1, C5, C10, C15 1000 pF chip capacitor
C4, C11
22 pF chip capacitor
C6, C12, C14
.018 µF chip capacitor
C7, C13
100 pF chip capacitor
L1
120 nH chip inductor
L4, L8
150 nH chip inductor
L5, L9
220 nH chip inductor
C2, C3, C8, C9, C16
C17, C19, C20, C21
C22, L2, L6
Shown on silkscreen, but
not used in actual circuit.
U1
CV211-2A WJ Converter
Size
0805
0603
0603
0603
0603
0603
0603
0603
0603
0805
QFN
Circuit Board Material: .014” FR-4, 4 layers, .062” total thickness
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 3 of 9 June 2007
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