Handset (J401) - Quectel UC20 User Manual

Produkt dostpny w sklepie www.Soyter.pl <--- kliknij
The following figure shows the sketch of audio plug which suits for the audio jack on UC20 EVB.

3.3.3. Handset (J401)

A handset can be used in audio interface J401. Figure 13 shows the circuit of audio interface J401 for
handset. And the name of the corresponding pins has been marked on the EVB.
U401
Codec
NAU8814
MIC+
MIC-
SPKOUT+
SPKOUT-
UC20_EVB_User_Guide
3
2
1
GND
Figure 12: The Sketch of Audio Plug
15pF 75pF
FB
15pF 75pF
Figure 13: Handset Circuit
Confidential / Released
UMTS/HSPA Module Series
SPK
MIC
ESD
15pF 75pF 15pF 75pF
ESD
15pF 75pF 15pF 75pF
UC20 EVB User Guide
ESD
J401
4
1
3
2
ESD
18 / 30