AS7058 datasheet(67/199 Pages) AMSOSRAM

tên linh kiện	AS7058

Giải thích chi tiết về linh kiện	IC for PPG, ECG and body impedance measurement

PDF	199 Pages

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nhà sản xuất	AMSOSRAM [ams-OSRAM AG]

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67 / 199 page

AS7058

Functional description

Datasheet • PUBLIC • Document Feedback

DS001077 • v2-00 • 2025-Sep-24

67 / 199

7.11

Startup information

To guarantee proper startup of AS7058 it is recommended to follow a defined startup timing of

the power supply reels. It is important that VVCSELS supply voltage is delayed compared to

VDVDD, VAVDD and VIOVDD supply voltage like it is shown in Figure 61. However, if the suggested

timing cannot be fulfilled and all supply voltages do start in parallel (tST_VCSELS=0 ms) this is

supported with the drawback that the connected LEDs might light up for a short period of time

during the very first startup of the device until all supplies are settled. If this behavior is

acceptable, all supplies can start up in parallel.

Figure 61: AS7058 startup timing diagram

7.11.1

Parameter

Table 14: Startup timing parameter

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

tST_VCSELS

Startup delay VLED supply voltage

VAVDDx

VDVDD

VIOVDD

VVCSELS

tST_VCSELS

VAVDD_MIN

VDVDD_MIN

VIOVDD _MIN

AS7058 bảng dữ liệu(PDF) 67 Page - ams-OSRAM AG