Eddy Wireless SD Cards Series Dokumentacja Pobierz pdf (Strona 49)

M12 Hardware Design

M12_HD_V3.3 - 48 -

SPK1P

SPK1N

Differential layout

Amplifier

circuit

Module

10pF

0603

Close to speaker

GND

ESD

33pF

0603

33pF

0603

GND

10pF

0603

ESD

10pF

0603

33pF

0603

Figure 29: Reference design with an amplifier for AOUT1

Texas Instruments TPA6205A1 is recommended for a suitable differential audio amplifier. There

are plenty of excellent audio amplifiers in the market.

SPK2P

AGND

Differential layout

Module

22uF

Close to speaker

GND

ESD

33pF

0603

10pF

0603

Figure 30: Reference design for AOUT2

Quectel

Confidential

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 75 76

Quectel Cellular Engine 1
Confidential 10

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Eddy Wireless SD Cards Series Dokumentacja Strona 49

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