Patent
High-voltage differential amplifier and method using low voltage amplifier and dynamic voltage selection
Shoubao Yan,Gerald W. Steele,David R. Baum +2 more
- 14 Oct 2008
51
TL;DR: In this paper, a differential amplifier (1D) is defined, which includes circuitry (5,R1,R2,52) coupling a common mode component of an input voltage (Vin+−Vin−) to a maximum voltage selector circuit (53) that produces an internal voltage equal to the larger of a first supply voltage.
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Abstract: A differential amplifier (1D) includes circuitry (5,R1,R2,52) coupling a common mode component of an input voltage (Vin+−Vin−) to a maximum voltage selector circuit (53) that produces an internal voltage (VRAIL-TOP) equal to the larger of a first supply voltage (VREG) and the common mode component. An input amplifier circuit (46) of the differential amplifier is powered by the internal voltage. The input voltage (Vin+−Vin−) is coupled to inputs (41A,B) of the input amplifier circuit (46). Outputs (64A,B) of the input amplifier circuit (46) are amplified by an output amplifier (50).
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Citations
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References
Patent
Chopper stabilized amplifiers combining low chopper noise and linear frequency characteristics
Johan H. Huijsing,Kofi A. A. Makinwa,J.F. Witte +2 more
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TL;DR: Chopper stabilized amplifiers combining low clock noise and linear frequency characteristics are used in offset correction circuitry, with the output of the chopper-stabilized amplifiers being integrated by an integrator.
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Patent
Dual path chopper stabilized amplifier and method
Dimitar T. Trifonov
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TL;DR: In this article, a dual-path chopper-stabilized amplifier (100 ) includes first (11 ) and second (11 A) chopping/notch-filtering paths, each including an input chopper ( 9,9 A), a transconductance amplifier ( 2,2 A), and a notch filter ( 15,15 A).
13