Technical data

SYSTEM CONNECTOR INTERFACE
31
LZT 123 8020 R1A
Additional Gain in car kit mode 28.5 dB
The following tables show the nominal PGA (programming gain
settings). For more information see the relevant AT commands.
Maximum input voltage limit: 245 mV
rms
Input Input (mV
rms
) TXAGC (dB) AUX AMP
gain
PCMOUT (dBm0)
ATMS 245 0 13 3
Maximum input level at MICI, 61.4 mV
rms
output at
PCMOUT = 3 dBm0
Input Differential
input (mV
rms
)
TXAGC (dB) AUX AMP
gain
PCMOUT (dBm0)
MICN
MICP
61.4 0 25 3
Output at AFMS for 3 dBm0 at PCMIN
Input dBm0 RXPGA Volume
control (dB)
AFMS (mV
rms
)
PCMIN 3 0 0 436
Output at BEARN/BEARP for 3 dBm0 at PCMIN
Input dBm0 RXPGA Volume
control (dB)
BEAR (mV
rms
)
PCMIN 3 0 0 388
5.7.2 Audio From Mobile Station - AFMS
AFMS is the analogue audio output from the radio device and
may be used to drive a speaker or the ear-piece in a car kit.
PCM digital audio signals, entering the radio device through the
PCMIN pin, are translated to analogue signals by the CODEC.
See PCM Digital Audio for further information.
The table below shows the audio signal levels for AFMS.
Parameter Limit
Speaker impedance 64 Ω to 1 kΩ
Output Capacitance 2.2 µF ±10 %