Data Sheet

FSC-BT1006A Datasheet
Shenzhen Feasycom Technology Co.,Ltdwww.feasycom.com
-26-
typically100/150 nF to give a bass roll-off to limit wind noise on the microphone.
The mic bias generator has a maximum drop out of 300 mV, if VBAT drops below (selected output voltage – drop
outvoltage), the output voltage will fall below specification. The generator will continue to operate but noise
performancewill be impaired.
4.8.4Line input
The picture belowshow 2 circuits for line input operation and show connections for either differential or single-ended
inputs.
In line input mode, the input impedance of the pins to ground varies from 6kΩto 34kΩdepending on input
gainsetting.
Figure 13: Differential Input
Figure 14: Single-ended Input
4.8.5Output Stage
The output stage digital circuitry converts the signal from 16-bit per sample, linear PCM of variable sampling
frequency to bit stream, which is fed into the analogue output circuitry.
The analogue output circuit comprises a DAC, a buffer with gain-setting, a low-pass filter and a class AB outputstage
amplifier.