Technical data

SYSTEM CONNECTOR INTERFACE
33
LZT 123 8020 R1A
5.7.4 Speaker Signals
Pin Speaker signals Dir Function
55 BEARP O Speaker positive output
56 BEARN O Speaker negative output
BEARP and BEARN are the speaker output pins. These are
differentialmode outputs. The electrical characteristics are given
in the table below.
Parameter Limit
Output level (differential)
≥ 4.0 V
pp
Output level (dynamic load = 32 Ω)
≥ 2.8 V
pp
Gain PCMIN
(5)
to BEARP/BEARN (differential) – 9 dB ± 1
Distortion at 1 kHz and maximum output level
≤ 5 %
Offset, BEARP to BEARN ± 30 mV
Ear-piece mute-switch attenuation
≥ 40 dB
(5)
See PCMIN signal in.
The following table shows the ear piece impedances that can
be connected to BEARP and BEARN.
Ear piece model Impedance Tolerance
Dynamic ear piece [32 Ω + 800 µH] // 100 pF ± 20 %
Dynamic ear piece [150 Ω + 800 µH] // 100 pF ± 20 %
Piezo ear piece 1 kΩ + 60 nF ± 20 %