Design of Highly Linear Tunable CMOS OTA Using a Linearizing Differential Pair in the Output Stage
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Zugriff:
An analytical method based on the standard square-law MOS modelling for the design of highly linear, fully differential CMOS operational transconductance amplifier (OTA) is presented. The proposed circuit implementation combines a cross-coupled quad cell with a source-coupled differential pair, as well as the current mirror technique. As a result, improved linearity of the developed OTA over the large tuning range is obtained. SPICE simulations show that for 0.5 mm HP AMOS14TB process (MOSIS) with a 2.5V power supply. Total Harmonic Distortion (THD) at 2.5Vpp is less than 0.2%. The dynamic range is equal to 77dB at power consumption 6.6mW.
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Design of Highly Linear Tunable CMOS OTA Using a Linearizing Differential Pair in the Output Stage
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Autor/in / Beteiligte Person: | Kozieł, S. ; Szczepański, S. |
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Medientyp: | serialPeriodical |
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