Stmicroelectronics Gmbh

Mediatek Singapore Pte. Ltd.

Adalberto Cantoni

Michael Anthony Ashburn, Jr

Ayman Shabra

Patrick Cooney

Joshua M Bamford

Described herein are DACs with low distortion for high dynamic range (HDR), extremely high dynamic range (EHDR), and other suitable applications. Some embodiments relate to a device including a DAC configured for coupling to an amplifier via a force path and a sense path. For example, the DAC may provide output current to the amplifier via the force path, and the DAC may sense the input voltage of the amplifier via the sense path. Accordingly, distortion such as harmonic distortion and/or gain offset from parasitic impedances in the force and/or sense paths may be reduced or eliminated. Some embodiments relate to a DAC including a voltage reference generator configured to compensate for variations in impedances of the DAC, such as due to semiconductor process variation. Accordingly, distortion in the DAC output due to variations in the DAC impedances may be reduced or eliminated.

Resistive DAC with summing junction switches, current output reference, and output routing methods

Mutual capacitances between regions of a MOS device become substantial factors that limit the speed and performance of the device as the device dimensions are reduced in size. A MOS transistor with a shielding structure formed above the gate is described. The shielding structure is connected to ground and is configured to reduce at least some of these mutual capacitances.

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San Jose, CA, United States of America

Adalberto Cantoni