US Patent 7518440 Dual path chopper stabilized amplifier and method
Patent 7518440 was granted and assigned to Texas Instruments on April, 2009 by the United States Patent and Trademark Office.
All edits
A dual path chopper-stabilized amplifier (100) includes first (11) and second (11A) chopping/notch-filtering paths, each including an input chopper (9,9A), a transconductance amplifier (2,2A), and a notch filter (15,15A). Chopping and notch filtering in the first path are controlled by first (CHOPCLK) and second (FILTERCLK) clock signals, respectively. Chopping and notch filtering in the second path are controlled by the second (FILTERCLK) and first (CHOPCLK) clock signals, respectively. Outputs of the first (15) and second (15A) switched capacitor notch filters are combined to provide an amplifier output signal (23A,B) that updates a capacitance (C4) at 4 times the frequency of the filter clock signal, to thereby improve amplifier stability without increasing clock frequency.
US Patent 07518440 Dual path chopper stabilized amplifier and method US Patent 7518440 Dual path chopper stabilized amplifier and method
US Patent 07518440 Dual path chopper stabilized amplifier and method
Find more entities like US Patent 7518440 Dual path chopper stabilized amplifier and method
