User's Manual

GSM/GPRS/GNSS Module Series
MC20 Hardware Design
MC20_Hardware_Design Confidential / Released 55 / 95
3.7.3. Receiver and Speaker Interface Design
Figure 26: Handset Interface Design for AOUT1
Figure 27: Speaker Interface Design with an Amplifier for AOUT1
A suitable differential audio amplifier can be chosen from the Texas Instrument’s website
(http://www.ti.com/). There are also other excellent audio amplifier vendors in the market.