Q2406B

Manufacturer Part NumberQ2406B
ManufacturerWAVECOM
Q2406B datasheet
 

Specifications of Q2406B

Date_code06+  
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Page 31
32
Page 32
33
Page 33
34
Page 34
35
Page 35
36
Page 36
37
Page 37
38
Page 38
39
Page 39
40
Page 40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
Page 33/81

Download datasheet (903Kb)Embed
PrevNext
Signal
Pin #
MIC1P
42
MIC1N
44
2.12.2 Common speaker outputs characteristics
The connection can be differential or single-ended
connection to reject common mode noise and TDMA noise is strongly
recommended. Morover in single-ended mode, ½ of the power is
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.
Speaker outputs SPK2 are push-pull amplifiers and can be loaded down to 150
Ohms and up to 1nF (see details in table
These outputs are differential and the output power can be adjusted by step of
2dB. The output can be directly connected to a speaker.
2.12.2.1 Differential Connection
Impedance of the speaker amplifier output in differential mode :
R ≤ 1Ω +/-10%
Figure 6 : SPK outputs (differential mode)
2.12.2.2 Single-ended Connection
Typical implementation:
Speaker
Figure 7 : SPK outputs (single-ended connection)
C1 = from 4.7µF to 47µF as per the speaker characteristics and the output
power.
C1=C2 ; R1= Speaker Impedance
Using a single-ended connection also includes losing half of the output power
compared to a differential connection.
confidential ©
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 exclusive de WAVECOM. Il ne peut être communiqué ou divulgué à
des tiers sans son autorisation préalable.
WM_PRJ_Q2400_PTS_002 - 002
Pin description
I/O
I/O type
I
Analog
Microphone 1 positive
I
Analog
Microphone 1 negative
Speaker gain vs Max output voltage).
SPKxP
SPKxN
C1
33 to
+
100pF
C3
C2
R1
ZHP
+
24th January 2003
Description
input
input
but using a differential
lost. When
SPKxP
SPKxN
Page : 33 / 81