AN1743 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'AN1743' PDF : 4 Pages View PDF
AN1743 - APPLICATION NOTE
The following tables show the absolute maximum rating characteristics for the STG3699 device and the
correct signal level applicable to these devices to avoid possible problems.
Table 1: Absolute Maximum Rating
Symbol
Vcc
VI
VIC
VO
Parameter
Supply Voltage
DC Input Voltage
DC Control Input Voltage
DC Output Voltage
Value
-0.5 to +4.6
-0.5 to Vcc +0.5
-0.5 to +4.6
-0.5 to Vcc +0.5
Units
V
V
V
V
Table 2: Right Level Applicable in Operating Conditions
Symbol
Vcc
VI
VIC
VO
Parameter
Supply Voltage
DC Input Voltage
DC Control Input Voltage
DC Output Voltage
Value
1.65 to 3.6
≤Vcc
≤Vcc
0 to Vcc
Units
V
V
V
V
3. APPLICATION
Usually, in telecom mobile applications, an Audio Amplifier drives the Analog Switch. So the designer
must consider different parameters to realize a PCB without problems.
A channel-to-channel Cross Talk or a drift of a few parameters are typical problems of bad coupling
between the Audio Amplifier and the Analog Switch.
The following schematic shows a typical speaker amplifier system for telecom mobile phones.
Figure 2: Audio System Amplifier Schematic
2/4
Share Link: 
