By Heimo Uhrmann, Robert Kolm, Horst Zimmermann
Ranging from the fundamentals of analog filters and the bad transistor features in nanometer CMOS 10 high-performance analog filters constructed via the authors in one hundred twenty nm and sixty five nm CMOS are defined greatly. between them are gm-C filters, current-mode filters, and energetic filters for system-on-chip recognition for Bluetooth, WCDMA, UWB, DVB-H, and LTE functions. For the lively filters a number of operational amplifier designs are defined. The booklet, moreover, features a evaluation of the most recent country of analysis on low-voltage low-power analog filters. to hide the subject of the ebook comprehensively, linearization matters and dimension tools for the characterization of complicated analog filters are brought moreover. a number of problematic illustrations advertise a simple comprehension. This e-book can be of price to engineers and researchers in in addition to scientists and Ph.D scholars at universities. The publication is additionally recommendable to graduate scholars specializing on nanoelectronics, microelectronics or circuit engineering.
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Extra info for Analog Filters in Nanometer CMOS (Springer Series in Advanced Microelectronics)
The filter architecture is shown in Fig. 9. The transconductors were realized in the same way as described in Sect. 6 (the representation is shown in Fig. 14). For the transconductors Gm0 , Gm1 only one common-mode feedback together was used. To achieve the exact filter parameters a digitally programmable concept is developed. 10 shows the circuit which switches at the output of the OTA (the transistor Mout is the n-channel output transistor of the OTA = M11 and M12 in Fig. 14) 2 further stages (it can be extended to several stages) in parallel.
E. 2. Due to the precision capabilities combined with the low power it is applicable for environments such as hospitals and healthcare. Furthermore UWB can also be used between digital camera, mobile phones, PC or as a general USB-cable replacement, also called wireless USB. An introduction to the UWB standard can be found in . The block diagram of a typical UWB receiver is shown in Fig. 5. After the input filter a balun follows which converts the single-ended signal into a fully differential signal.
50 5 Gm -C Filters Fig. 11 Realized chip Fig. 12 DC-transfer characteristics of the realized filter In Fig. 14(a) the amplitude frequency response and in Fig. 14(b) the phase frequency response for the constellation with minimum cut-off frequency (258 MHz) and for maximum frequency (355 MHz) is shown. The amplitude frequency response falls with −60 dB/decade in the cut-off region. 2 the measured differential spectral components of a single-tone measurement with an input frequency of fC = 50 MHz are presented.
Analog Filters in Nanometer CMOS (Springer Series in Advanced Microelectronics) by Heimo Uhrmann, Robert Kolm, Horst Zimmermann