TSL26721 datasheet(19/47 Pages) OSRAM

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ams Datasheet

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[v1-01] 2019-Nov-20

TSL2672 − Principles O f Operation

8-bit proximity data (PDATAx) registers. ADC scaling is

controlled by the proximity ADC conversion time (PTIME) which

is programmable from 1 to 256 2.73-ms time units. However,

depending on the application, scaling the proximity data will

equally scale any accumulated noise. Therefore, in general, it is

recommended to leave PTIME at the default value of one

2.73-ms ADC conversion time (0xFF).

In many practical proximity applications, a number of optical

system and environmental conditions can produce an offset in

the proximity measurement result. To counter these effects, a

proximity offset (POFFSET ) is provided which allows the

proximity data to be shifted positive or negative. Additional

information on the use of the proximity offset feature is

provided in available ams application notes.

Once the first proximity cycle has completed, the proximity

valid (PVALID) bit in the Status register will be set and remain

set until the proximity detection function is disabled (PEN).

For additional information on using the proximity detection

function behind glass and for optical system design guidance,

please see available ams application notes.

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