Specifications

WM_PRJ_Q2400_PTS_001 - 003
6th November 2002
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2.10 Analog to Digital Converter
Analog to Digital converter input is provided by the WISMO Quik Q2403 Series.
This converter is a 10 bits one, ranging from 0 to 2.8V .
Pin description
Signal Pin number I/O I/O type Description
AUXV0 33 I Analog A/D converter
Electrical Characteristics
Parameter Min Max Unit
Resolution 10 bits
Sampling rate 90.3 Ksps
Input signal range 0 2.8V V
ADC Reference Accuracy 0.75 2 %
Integral Accuracy +/- 1 LSB
Differential Accuracy +/- 1 LSB
Input Impedance (R) 4.7
k
Ω
Input Impedance (C) 100 nF
2.11 Audio interface
Two different microphone inputs and two different speaker outputs are
supported.
The WISMO Quik Q2403 Series also includes an echo cancellation feature
which allows handsfree function.
The MIC2 inputs already include the biasing for an electret microphone
allowing an easy connection to a handset.
The MIC1 inputs does not include an internal bias. MIC1/SPK1 is then
appropriate for a handsfree system or a handset with biasing exernal to the
module.