TMF8805 datasheet(62/74 Pages) OSRAM

62 / 74 page

TMF8805

Application information

Datasheet

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DS000692

• v7-00 • 2023-Dec-01

62 / 74

Application information

7.1

SPAD options

7.1.1

Signal SPADs

Firmware can enable/disable SPADs in the array as needed.

Table 109: Signal SPADs

Min

Nom

Max

Comment

1x SPADS

10x Attenuated SPADs

100x Attenuated SPADs

Physically there are 4x32=128 signal SPADs, but SPADs with too high dark count rate are

disabled during production test. There are four TDCs (TDC1…TDC4) connected to the output

of the SPADs. Each of the TDCs is connected to an array of 32 SPADs (SPADs with too high

dark count rate are disabled). In distance mode the number of SPADs are reduced to typ. 40

SPADs to limit the FOV of the TMF8805.

7.1.2

Reference SPADs

Table 110: Reference SPADs

Min

Nom

Max

Comment

100x Attenuated SPADs

Due to the high light intensity form the VCSEL which is located very close to the reference

SPADs and has no optical barrier like the signal SPADs only highly attenuated SPADs are

used. Physically there are 12 reference SPADs, but SPADs with too high dark count rate are

disabled during production test. There is one TDC (TDC0) connected to the output of the

SPADs.

TMF8805 데이터시트(PDF) 62 Page - OSRAM GmbH