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GE864 Hardware User Guide
1vv0300694 Rev.10 - 10/06/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 43 of 69
9.2.2 Output Lines Characteristics
“EAR_MT” Differential Line-out Drivers Path
Line Coupling DC
Line Type Bridged
Output load resistance ≥ 14 Ω
Internal output resistance 4 Ω (typical)
Signal bandwidth 150 – 4000 Hz @ -3 dB
Differential output voltage 328mVrms /16 Ω @ -12dBFS
SW volume level step - 2 dB
Number of SW volume steps 10
“EAR_HF” Power Buffers Path
Line Coupling DC
Line Type Bridged
Output load resistance ≥ 14 Ω
Internal output resistance 4 Ω ( >1,7 Ω )
Signal bandwidth 150 – 4000 Hz @ -3 dB
Max Differential output voltage 1310 mV
rms
(typ, open circuit)
Max Single Ended output voltage 656 mV
rms
(typ, open circuit)
SW volume level step - 2 dB
Number of SW volume steps 10
For more detailed information about audio please refer to the Audio Settings Application Note
80000NT10007a.
9.3 External SIM Holder Implementation
Please refer to the related User Guide (SIM Holder Design Guides, 80000NT10001a)