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AS7331 数据表(PDF) 64 Page - ams-OSRAM AG

部件名 AS7331
功能描述  Spectral UVA/B/C Sensor
PDF  72 Pages
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制造商  AMSOSRAM [ams-OSRAM AG]
网页  https://ams-osram.com/
标志 AMSOSRAM - ams-OSRAM AG

AS7331 数据表(HTML) 64 Page - ams-OSRAM AG

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AS7331
Application Information
Datasheet
• PUBLIC
DS001047
• v4-00 • 2023-Mar-24
71
│ 63
9
Application Information
9.1
Schematic
Figure 58 shows a typical application circuit. Digital and analog grounds should be routed separately
onto the printed circuit board and must be connected near the device.
Figure 58:
Typical Application Circuit
16
15
14
13
1
8
6
7
5
12 11 10
9
2
3
4
SYN
A1
VSSA
VSSA
SCL
A0
VSSA
VSSA
VDDD 3.3 V
100 nF
0 Ω
3.3 MΩ
100 nF
VDDA 3.3 V
SCL
SDA
DIN0
DIN1
Controller
VDDD
VSSD
SYN
READY
820
820
100 nF
REXT
C
A B
AS7331
Please make sure all the specified components within the application circuit work according to their
operating range and the parameters in the datasheet. For example, voltage regulators (workspace
load current, separated analog and digital, or decoupled power supplies based on a common
regulator) need special treatment to avoid noise or deviations during operation.
9.2
External Components
The AS7331 and its external components for references and/or power supply (e.g. reference resistor,
REXT) should be placed on the same PCB side.
9.3
PCB Layout
The analog supply must be placed as close as possible to the AS7331. The connection between the
analog and digital grounds must be beneath (LP level) and/or near the AS7331.



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