U4082B-DEV-BOARD Atmel, U4082B-DEV-BOARD Datasheet - Page 23

• Manufacturer Part Number: U4082B-DEV-BOARD
• Description: WiFi / 802.11 Modules & Development Tools Voice Switched Circuit
• Manufacturer: Atmel

Figure 8-3.
4743D–CORD–03/06
Acoustic
coupling
Basic Clock Diagram for Design Purposes
MIC amp.
RLI2
TLI2
I
3
I
1
MICO
SAO
Figure 8-2.
• G
• G
• G
• G
• G
• G
R
R
0.18 V/V, or –15 dB)
–1.6 dB)
U4083B (typically 22V/V or 26.8 dB)
microphone output voltage
1
3
Speaker amp.
ST
HR
FO
R
SA
AC
+
-
+
-
is the gain of the receive attenuator measured from RI to RECO
is the side tone gain, measured from HTO–/HTO+ to the filter input (measured at
is the gain of the speaker amplifier, measured from RECO to the differential output of the
is the acoustic coupling, measured from the speaker differential voltage to the
is the gain from Tip/Ring to the filter input for receive signals (measured at 0.833V/V or
is the gain of the filter stage, measured from the input of the filter to RI, typically 0 dB
Typical Output Swing versus V
Comparator
C1
RECO
TI
R attenuator
T attenuator
3
2
1
5
4
0
6
Attenuator
control
3
TO
RO
Comparator
4
TO
RI
S
C2
V
S
(V)
5
TO, RO
FO
MICO
Hybrid amp.
HTO -,
HTO +
6
+
-
+
-
HTO-/HTO+
R
R
2
4
FO
G
TLI1
RLI1
ST
I
4
Filter
I
2
Hybrid
FI
U4082B
G
G
HIT
HR
Ring
Tip
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