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| BC41B143A-DS-003PC Datasheet, PDF (45/94 Pages) List of Unclassifed Manufacturers – BlueCore 4-ROM Plug-n-Go Single Chip Bluetooth v2.0 + EDR System | |||
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Device Terminal Descriptions
10.1.2 Single-Ended Input (RF_IN)
This is the single-ended RF input from the antenna. The input presents a complex impedance that requires a matching
network between the terminal and the antenna. Starting from the substrate (chip) side, the input can be modelled as
a lossy capacitor with the bond wire to the ball grid represented as a series inductance.
The terminal is DC blocked. The DC level must not exceed (VSS_RADIO -0.3V to VDD_RADIO + 0.3V).
BlueCore
L1
1.5nH
RF_IN
R1
6.8â¦
C1
0.68pF
Figure 10.2: Circuit RF_IN
Note:
Both terminals must be externally DC biased to VDD_RADIO
BC41B143A-ds-003Pc
Advance Information
© Cambridge Silicon Radio Limited 2005
Page 45 of 94
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