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Wavecom WMOi3 User Manual - page 35
January 2001/ version 1.4
WMOi3 Integrated Modem
confidential ©
35/61
This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged
without prior written agreement. Ce document est la propriété exlcusive de WAVECOM. Il ne peut
être communiqué ou divulgué à des tiers sans son autorisation préalable.
Table 19 : microphone 1 input pin description
Signal
Pin #
I/O
I/O type*
Description
MIC1P
20
I
Analog
Microphone 1 positive input
MIC1N
22
I
Analog
Microphone 1 negative input
*See Table 3 “operating conditions” in subdivision 4.1.1
The 50-pin
connector description
4 . 1 . 1 0 . 3
4 . 1 . 1 0 . 3 Speaker
Speaker 2 Outputs
2 Outputs
Speaker outputs SPK2 are push-pull amplifiers and can be loaded down to 50
Ohms and up to 1nF. These outputs are differential and the output power can be
adjusted by step of 2dB. The output can be directly connected to a speaker.
When using a single-ended connection, be sure to have a very good ground plane,
a very good filtering as well as shielding in order to avoid any disturbance on the
audio path.
Differential Connection
Single-ended Connection
figure 12 : speaker 2 output
C1 = from 100nF to 47µF as per the speaker characteristics and the output
power.
Using a single-ended connection also includes losing half of the output power
compared to a differential connection.
Table 20 : speaker 2 output pin description
Signal
Pin #
I/O
I/O type*
Description
SPK2P
10
O
Analog
Speaker 2 positive output
SPK2N
8
O
Analog
Speaker 2 negative output
*See Table 3 “operating conditions” in subdivision 4.1.1
The 50-pin
connector description
SPK2P
SPK2N
SPK2P
C1
+
Summary of WMOi3
Page 1
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Page 3: Wmoi3
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Page 6: Cautions:
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Page 25
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Page 35
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Page 38
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Page 39
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Page 40
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Page 41
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Page 42
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Page 43
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Page 44
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Page 45
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Page 46
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Page 47
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Page 48
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Page 49
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Page 50
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Page 51
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Page 52
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Page 53: Figures
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Page 54
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Page 55
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Page 57
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Page 59
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Page 60
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Page 61
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Page 62
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Page 63
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Page 64: Low Profile Sockets
Clp–110–02–f–d–p clp–130–02–l–d clp–116–02–l–d clp–116 – 02–f–dh high reliability tiger-claw contacts low profile (2,21mm) .087" (1,27mm x 1,27mm) .050" x .050" micro pitch surface mount suitable for pass-through applications samtec usa • tel: 1-800-samtec-9 or 812-944-6733 • fax: 812-948-5047 samte...
Page 65: Standard Socket
Samtec usa • tel: 1-800-samtec-9 or 812-944-6733 • fax: 812-948-5047 samtec uk • tel: 01236 739292 • fax: 01236 727113 samtec asia pacific • tel: 65-745-5955 • fax: 65-841-1502 samtec germany • tel: +49 (0) 89 / 89460-0 • fax: +49 (0) 89 / 89460-299 samtec france • tel: 01 60 95 06 60 • fax: 01 60 9...