> 3.15.3 | Loudspeaker Circuit

> The GSM module comprises two analog differential speaker outputs: EP1 and EP2. Output EP1 is able to drive a load of 8Ohms while the output EP2 can drive a load of 32Ohms. Interface EP2 can also be connected in single ended configuration. Figure 28 shows an example of a differential loudspeaker configuration.

> Figure 28: Differential loudspeaker configuration | Loudspeaker impedance EPP1/EPN1 Z L = typ. 8 Ω EPP2/EPN2 Z L = typ. 32 Ω