A compact power-efficient 0.5 V fully differential difference amplifier
| Autor: | Fabian Khateb, Costas Psychalinos, Tomasz Kulej, Montree Kumngern |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Total harmonic distortion Power supply rejection ratio business.industry Transistor Electrical engineering 020206 networking & telecommunications 02 engineering and technology Power factor law.invention 03 medical and health sciences 0302 clinical medicine Common-mode rejection ratio CMOS law 0202 electrical engineering electronic engineering information engineering Common-mode signal Electrical and Electronic Engineering business 030217 neurology & neurosurgery Gain–bandwidth product |
| Zdroj: | AEU - International Journal of Electronics and Communications. 105:71-77 |
| ISSN: | 1434-8411 |
| Popis: | This brief presents a novel compact CMOS Fully Differential Difference Amplifier (FDDA) structure suitable for extremely low-voltage low-power applications. Unlike the conventional FB-DDAs that employ two differential pairs, the proposed structure employs one differential pair of multiple-input bulk-driven MOS transistor (MI-BD MOST) that results in reduced count of current branches and, consequently, of power consumption. The proposed FDDA has the simplest CMOS structure presented in the literature so far. Furthermore, while the voltage supply is 0.5 V and the power consumption is 246.6 nW the circuit enjoys rail-to-rail input common mode range (ICMR), high common mode rejection ratio (CMRR) of 100.3 dB @ DC, power supply rejection ratio (PSRR) of 127.8 dB@ DC, voltage gain of 61.4 dB and gain bandwidth product of 6.98 kHz for 30 pF capacitive load. The total harmonic distortion (THD) is less than 0.08% for 500 mV/1 kHz input sine wave signal. The circuit was designed and simulated in Cadence/Spectre environment using 0.18 µm CMOS process from TSMC. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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