User's Manual

GC864 Hardware User Guide
1vv0300733 Rev. 0 - 12/06/06
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Right reserved page 43 of 68
8.2 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
• max. differential output voltage 1310 mV
rms
(typ, open circuit)
• 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