2015 2nd International Conference on Signal Processing and Integrated Networks (SPIN) 2015
DOI: 10.1109/spin.2015.7095336
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Ultra low-power bulk and gate-driven, class AB, sub-threshold transconductor

Abstract: Operational Transconductance Amplifier (OTA), is a main building block of analog signal systems. This paper presents a novel low-voltage and low-power rail-to-rail wide linear range OTA, operating in weak inversion region. The bulk and source-degenerated input stage provides, rail-to-rail input and output signal swings, whereas the class AB flipped voltage follower generates the bias current for the input stage. To enhance the current drive capability, a positive feedback has been employed at gates of input tr… Show more

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Cited by 7 publications
(9 citation statements)
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“…The gate, source and bulk voltages modulate input pair drain currents under applied source-degeneration and gate-regeneration in the input core [22] producing effective transconductance G m given by ( )…”
Section: Performance Equationsmentioning
confidence: 99%
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“…The gate, source and bulk voltages modulate input pair drain currents under applied source-degeneration and gate-regeneration in the input core [22] producing effective transconductance G m given by ( )…”
Section: Performance Equationsmentioning
confidence: 99%
“…The sub-threshold region operation need around 78 mV across the devices whereas strong inversion needs V OV 4200 mV, hence sub-threshold operation favors LV design [13]. So to design a high open loop gain and rail-to-rail linear OTA a source-degenerated, bulk-driven PMOS input core has been preferred in reported works [17][18][19][20][21][22]. The PMOS input core structure provides reduced flicker noise as compared to NMOS based design.…”
Section: Introductionmentioning
confidence: 99%
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