Design and simulation of fourth order low-pass Gm-C filter with novel auto-tuning circuit in 90 nm CMOS
In: Analog Integrated Circuits and Signal Processing, Jg. 107 (2021-01-07), S. 451-461
Online
unknown
Zugriff:
A tunable high-frequency operational transconductance amplifier (OTA) is presented along with its application in the implementation of a Gm-C filter. The OTA is tuned by varying the negative resistance produced by a positive feedback at the output. Post-layout simulation results (using TSMC 90 nm CMOS technology and a 1-V supply voltage) show that the differential DC gain, common-mode gain and OTA unity gain frequency are 34 dB, −26 dB and 10 GHz, respectively. Moreover, for precise control of filter performance, an auto-tuning circuit is presented to adjust the filter cutoff frequency at low power consumption (i.e., 0.6 mW, about 16.3% of the total circuit power consumption). The filter has a cutoff frequency of 1 GHz with a group delay variation less than 6% up to 1.3 fc. The size of filter is 0.040 × 0.023mm2 and the third order intermodulation (IM3) value at cutoff frequency is −37 dB. The Monte Carlo simulation results are presented for predicting the manufacturing process errors.
Titel: |
Design and simulation of fourth order low-pass Gm-C filter with novel auto-tuning circuit in 90 nm CMOS
|
---|---|
Autor/in / Beteiligte Person: | Abdolmaleki, Mohammad ; Dousti, Massoud ; Mohammad Bagher Tavakoli |
Link: | |
Zeitschrift: | Analog Integrated Circuits and Signal Processing, Jg. 107 (2021-01-07), S. 451-461 |
Veröffentlichung: | Springer Science and Business Media LLC, 2021 |
Medientyp: | unknown |
ISSN: | 1573-1979 (print) ; 0925-1030 (print) |
DOI: | 10.1007/s10470-020-01785-9 |
Schlagwort: |
|
Sonstiges: |
|