WM_PRJ_Q2501_PTS_002
- 001
March
2004
confidential ©
Page:
39 / 79
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without prior written agreement.
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3.3.6.2.5
Differential connection example
Impedance of the microphone input in differential mode:
•
Module ON: Rin = 10 k
Ω
±
30 %,
•
Module OFF: Rin > 10 M
Ω
±
30 %.
Figure 21: MIC1 input differential connection
L300, L301, C304, C305, C306 should be placed as close as possible to the pin
#62 (MIC1P) and pin #64 (MIC1N) of the WISMO Q2501 module system
connector.
It is better using another 2.8 V power supply instead of VCC (system connector
pin #60) due to TDMA noise.
Summary of Contents for WISMO Quik Q2501
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