Intersil Americas Inc.

Zhong Li

Theodore D Rees

Xijian Lin

Phillip J Benzel

Wendy Ng

Oleg Steciw

In an embodiment, a proximity sensor includes a driver, a photo-diode (PD) and an analog-to-digital converter (ADC). The proximity sensor can also include a controller to control the driver. The driver selectively drives a light source, e.g., an infrared (IR) light emitting diode (LED). The PD, which produces a current signal indicative of the intensity of light detected by the PD, is capable of detecting both ambient light and light produced by the light source that is reflected off an object. The ADC receives one or more portion of the current signal produced by the PD. The ADC produces one or more digital output that can be used to estimate the proximity of an object to the PD in a manner that compensates for ambient light detected by the PD and transient changes to the detected ambient light.

Proximity sensors and methods for sensing proximity

Circuits and methods for damping out parasitic resonance within a packaged integrated circuit (IC) are provided. A conductive path including a resistor and a conductor is added in parallel with a conductive path that provides power to components within a die of the packaged IC. When implemented in a packaged laser driver integrated circuit (IC), a conductive path including a resistor and a conductor in placed in parallel with a conductive path that provides a laser driver output, of the packaged laser driver IC, to a laser diode. This abstract is not intended to be a complete description of the various embodiments of the present invention.

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Campbell, CA, United States of America

Zhong Li