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Demystifying Switched Capacitor Circuits
book

Demystifying Switched Capacitor Circuits

by Mingliang (Michael) Liu
June 2006
Intermediate to advanced content levelIntermediate to advanced
336 pages
10h 24m
English
Newnes
Content preview from Demystifying Switched Capacitor Circuits
Demystifying Switched-Capacitor Circuits
284
preferred in the digital high-IF receivers [11][17]. For the ∆Σ modulators in this
chapter, three different IFs are chosen: 78 MHz for GSM, 138.24 MHz for WCDMA,
and 110.59 MHz for DECT.
As mentioned earlier, a third-order 1-bit single-stage modulator structure is
adequate to the design requirements in Table 8.3. An OSR of 192 is chosen for GSM
to achieve a high SNR more than 100 dB. For DECT, the value of its OSR is set to
64. The OSR is set to only 24 since a channel bandwidth of about 2 MHz is required
by the WCDMA standard.
Having determined the OSR values, we can calculate the different sampling ...
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Publisher Resources

ISBN: 9780750679077