Invention Grant
- Patent Title: Split miller compensation in two-stage differential amplifiers
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Application No.: US17350817Application Date: 2021-06-17
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Publication No.: US11658626B2Publication Date: 2023-05-23
- Inventor: Charles Parkhurst , Gabriel Eugenio De La Cruz Hernandez
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Valerie M. Davis; Frank D. Cimino
- Main IPC: H03F3/45
- IPC: H03F3/45 ; H03F1/34

Abstract:
A two-stage differential amplifier with cross-coupled compensation capacitors. The differential amplifier includes first amplifier circuitry receiving a differential input voltage and presenting first and second intermediate outputs. The amplifier further includes a second amplifier stage with a first leg having an input coupled to the second intermediate output of the first amplifier circuitry, and a second leg having an input coupled to the first intermediate output of the first amplifier circuitry. A compensation capacitor is provided for each leg of the second amplifier stage, each coupled between the output of that amplifier leg and its input. A first cross-coupled capacitor is coupled between the output of the first amplifier leg to the input of the second amplifier leg, and a second cross-coupled capacitor is coupled between the output of the second amplifier leg and the input of the first amplifier leg.
Public/Granted literature
- US20220407480A1 Split Miller Compensation in Two-Stage Differential Amplifiers Public/Granted day:2022-12-22
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