MC13143 데이터 시트보기 (PDF) - Motorola => Freescale
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MC13143 Datasheet PDF : 9 Pages
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ARCHIVED BY FREESCALE SEMICMOCN1D31U4C3TOR, INC. 2005
Figure 10. Circuit Side Component Placement View
Mixer In
Mx Lin
Cont
Rev A
MC13143D
Toko
926A10
Dielectric
Filter
IF
Out
16:1
Impedance
Transformer
Gnd
MC13143D 100 p
100 n
51
100 n
100 p
VCC
LO
Input
NOTES: 926.5 MHz preselect dielectric filter is Toko part # 4DFA–926A10; the 4DFA (2 and 3 pole SMD type) filters are available
for applications in cellular and GSM, GPS, DECT, PHS, PCS and ISM bands at 902–928 MHz, 1.8–1.9 GHz at 2.4–2.5 GHz.
The PCB also accommodates a surface mount RF SAW filter in an eight or six pin ceramic package for the cellular base and
handset frequencies. Recommended manufacturers are Siemens and Murata.
The PCB may also be used without a preselector filter; AC coupled to the mixer as shown in the test circuit schematic.
All other external circuit components shown in the PCB layout above are the same as used in the test circuit schematic.
16:1 broadband impedance transformer is mini circuits part #TX16–R3T; it is in the leadless surface mount “TX” package. For a
more selective narrowband match, a lowpass filter may be used after the transformer. The PCB is designed to accommodate
lump inductors and capacitors in more selective narrowband matching of the mixer differential outputs to a single–ended output
at a given IF frequency.
.
The local oscillator may also be driven in a differential configuration using a coaxial transformer. Recommended sources are the
Toko Balun transformers type B4F, B5FL and B5F (SMD component).
MOTOROLA RF/IF DEVICE DATA
7
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