Telit Wireless Solutions E922-3GR Series, Hardware User'S Manual, Page: 86 / 112

xE922-3GR Hardware User Guide
1VV0301272 Rev.0.8 2017-01-05
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Page 86 of 112
Parameters VMIC_BIAS supply:
Parameter Min Typ Max Unit condition
VMIC_BIAS 1.9..2.2 V
I_out 4.0 mA
Noise 4 uVrms 300-3900Hz
R_load 1 kOhm
PSSR 75 dB
15.1.2. Analog OUT
The analog audio-
out consists of two DAC’s follow
ed by post filter, and finally the output stage. The DAC is
preceeded by digital interpolation filter of which oversampling ratio depends on respective sampling rate.The
following block diagram explains how the output DAC signal sources can be switched to the respective output
driver options.
Parameters audio DAC:
Parameter Min Typ Max Unit condition
Bit width 16 bit
BW 20 Hz Lower limit
4 20 kHz Upper limit
Output
differential 1.2 Vpp 0 dB FS, gain 0dB