EasyManuals Logo

Quectel GSM Series Audio Design Guide

Quectel GSM Series
36 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #7 background imageLoading...
Page #7 background image
GSM/GPRS Modules
GSM Module Audio Design Guide
GSM Module Audo Design Guide Confidential/Release 6 / 35
Figure Index
FIGURE 1MICROPHONE REFERENCE CIRCUIT FOR AIN1&AIN2 ........................................................... 10
FIGURE 2: RECEIVER REFERENCE CIRCUIT FOR AOUT1 .......................................................................... 11
FIGURE 3: RECEIVER REFERENCE CIRCUIT WITH AUDIO POWER AMPLIFIER FOR AOUT1 ................. 11
FIGURE 4SPK REFERENCE CIRCUIT FOR AOUT2 ................................................................................... 12
FIGURE 5RECEIVER REFERENCE CIRCUIT WITH AUDIO POWER AMPLIFIER FOR AOUT2 .............. 12
FIGURE 6HEADSET REFERENCE CIRCUIT............................................................................................... 13
FIGURE 7MICROPHONE REFERENCE CIRCUIT FOR AIN1&AIN2 ........................................................... 13
FIGURE 8RECEIVER REFERENCE CIRCUIT FOR AOUT1 ........................................................................ 14
FIGURE 9HEADSET REFERENCE CIRCUIT............................................................................................... 14
FIGURE 10SPK REFERENCE CIRCUIT ...................................................................................................... 15
FIGURE 11MICROPHONE REFERENCE CIRCUIT FOR AIN1&AIN2 ......................................................... 16
FIGURE 12RECEIVER REFERENCE CIRCUIT FOR AOUT1 ...................................................................... 16
FIGURE 13SPK REFERENCE CIRCUIT FOR AOUT2 ................................................................................. 17
FIGURE 14SPK REFERENCE CIRCUIT WITH AUDIO POWER AMPLIFIER FOR AOUT2 ........................ 17
FIGURE 15HEADSET REFERENCE CIRCUIT............................................................................................. 18
FIGURE 16SPK REFERENCE CIRCUIT ...................................................................................................... 18
FIGURE 17HANDS-FREE REFERENCE CIRCUIT AT CHANNEL AIN1/AOUT1 ......................................... 20
FIGURE 18LAYOUT OF AUDIO .................................................................................................................... 21
FIGURE 19FIVE ECHO PATHS ..................................................................................................................... 22
FIGURE 20MICROPHONE SOCKET DESIGN ............................................................................................. 23
FIGURE 22SPK FREQUENCY RESPONSE................................................................................................. 25
FIGURE 23SPK THD ..................................................................................................................................... 26
Quectel
Confidential

Other manuals for Quectel GSM Series

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Quectel GSM Series and is the answer not in the manual?

Quectel GSM Series Specifications

General IconGeneral
BrandQuectel
ModelGSM Series
CategoryControl Unit
LanguageEnglish

Related product manuals