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US 2017/0346456 A1Published application
Active rc filters
AssigneeNordic Semiconductor ASA
InventorPhil Corbishley
Life of this patent
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Abstract
An operational amplifier comprises: a first amplifier stage 4 comprising a first differential pair of transistors 8, 10 arranged to receive and amplify a differential input signal 18, 20 thereby providing a first differential output signal 22, 24; and a second amplifier stage 6 comprising a second differential pair of transistors 26, 28 arranged to receive and amplify the first differential output signal 22, 24 thereby providing a second differential output signal 38, 40.
Claims15
An operational amplifier comprising:
- a first amplifier stage comprising a first differential pair of transistors arranged to receive and amplify a differential input signal thereby providing a first differential output signal;
- and
- a second amplifier stage comprising a second differential pair of transistors arranged to receive and amplify the first differential output signal thereby providing a second differential output signal.
An active RC filter comprising:
- an operational amplifier that comprises:
- a first amplifier stage comprising a first differential pair of transistors arranged to receive and amplify a differential input signal thereby providing a first differential output signal;
- and
- a second amplifier stage comprising a second differential pair of transistors arranged to receive and amplify the first differential output signal thereby providing a second differential output signal.
1 more element
(canceled)
Dependencies are inferred from the claim text.