SENSOR ARRANGEMENT FOR LIGHT SENSING AND TEMPERATURE SENSING AND METHOD FOR LIGHT SENSING AND TEMPERATURE SENSING

摘要

A sensor arrangement for light sensing and temperature sensing comprises a first sensor input (1) for connecting a temperature sensor (11) and a second sensor input (2) for connecting a light sensor (21), in particular an ambient light sensor. A sensor switch (S3) electrically connects either the first or the second sensor input (1, 2) to an integration input (41) of an integrating analog-to-digital converter (4). A reference circuit (5) connects to the integration input (41) via a first switch (S2). A first reference input (42) of the integrating analog-to-digital converter (4) is to be connected with a first reference potential (Vb1). A counter (6) connects to an integration output (43) of the integrating analog-to-digital converter (4). And a controller unit (6) connects to the counter (6) and is designed to control the first switch (S2) depending on an integrated sensor signal (Vout) integrated by the integrating analog-to-digital converter (4).

主权项

1. A sensor arrangement for light sensing and temperature sensing, comprising:
a first sensor input for connecting a temperature sensor and a second sensor input for connecting an optical sensor, in particular an ambient light sensor, a sensor switch for electrically connecting either the first or the second sensor input to an integration input of an integrating analog-to-digital converter, a reference circuit connected to the integration input via a first switch, a first reference input of the integrating analog-to-digital converter to be connected with a first reference potential, and a controller unit connected to an integration output of the integrating analog-to-digital converter and designed to control the first switch depending on an integrated sensor signal integrated by the integrating analog-to-digital converter and depending on the first reference potential wherein the first reference potential is set to different values depending on whether the first or the second sensor input is electrically connected to the integration input.