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BLUECORE4-ROM bảng dữ liệu(PDF) 49 Page - List of Unclassifed Manufacturers

tên linh kiện BLUECORE4-ROM
Giải thích chi tiết về linh kiện  BlueCore 4-ROM CSP EDR
PDF  89 Pages
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nhà sản xuất  ETC [List of Unclassifed Manufacturers]
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BLUECORE4-ROM bảng dữ liệu(HTML) 49 Page - List of Unclassifed Manufacturers

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Device Terminal Descriptions
BC41B143A-ds-002Pd
This material is subject to CSR’s non-disclosure agreement
Production Information
© Cambridge Silicon Radio Limited 2005
Page 49 of 89
11 Device Terminal Descriptions
11.1
RF_A and RF_B
RF_A and RF_B form a complementary balanced pair. On transmit, their outputs are combined using a balun into
the single-ended output required for the antenna. Similarly, on receive their input signals are combined internally.
Both terminals present similar complex impedances that require matching networks between them and the balun.
Starting from the substrate (chip side), the outputs can each be modelled as an ideal current source in parallel
with a lossy resistance and a capacitor. The bond wire can be represented as series inductance.
BlueCore4-ROM CSP
+
_
PA
+
_
LNA
RF
Switch
RF
Switch
L2
1.5nH
L3
1.5nH
R3
10
Ω
0.9pF
R2
10
Ω
0.9pF
RF_A
RF_B
Figure 11.1: Circuit RF_A and RF_B



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