SIM900 View Datasheet(PDF) - Unspecified

Part Name

Description

Manufacturer

SIM900

SIM900 Quad-band/SIM900A Dual-band GSM/GPRS module

Unspecified 

SIM900 Hardware Design

3.9.1 Speaker Interface Configuration

Differential layout

MODULE

SPK_P

SPK_N

Close to speaker

GND

10pF

10pF

10pF

33pF

33pF

33pF

ESD

ANTI

ESD

ANTI

GND

Figure 23: Speaker interface configuration

Differential layout

MODULE

SPK_P

SPK_N

Amplifier

Circuit

Close to speaker

GND

10pF

10pF

10pF

33pF

33p

F

33pF

ESD

ANTI

ESD

ANTI

GND

Figure 24: Speaker interface with amplifier configuration

SIM900_HD_V1.01

36

26.12.2009

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