STG3696EQTR STMicroelectronics, STG3696EQTR Datasheet - Page 9

• Manufacturer Part Number: STG3696EQTR
• Description: IC SWITCH SPDT USB/AUDIO 10-QFN
• Manufacturer: STMicroelectronics

Specifications of STG3696EQTR

• Number Of Switches: 2
• Switch Configuration: SPDT
• On Resistance (max): 2.5 Ohms
• On Time (max): 85 us
• Off Time (max): 5 us
• Off Isolation (typ): - 65 dB
• Bandwidth: 950 MHz
• Supply Voltage (max): 4.5 V
• Supply Voltage (min): 2.7 V
• Supply Current: 18 uA
• Maximum Power Dissipation: 1120 mW
• Maximum Operating Temperature: + 150 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-10
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-11015-2

STG3696E
5
5.1
5.2
5.3
5.4
Operation
Overvoltage fault protection
STG3696E features an overvoltage fault protection in compliance to USB fault protection
specification. The fault protection circuitry is triggered when the voltage on the COMn
channels raise above V
USB transceiver from being damaged by excessive voltage levels.
Negative charge pump for negative rail audio signaling
STG3696E uses a negative charge pump to generate a negative supply which allows the
audio signal to swing below ground (up to V
fault protection is activated when the voltage on the COMn channels raise above V
there must not be a negative voltage attached to the AUn channels.
V
The connection between USBn and COMn is triggered when V
higher than V
override enable (AOVR) high will connect the AUn channels to the COMn channels. If AOVR
is low, the switching between AUn and USBn is controlled by the V
Pop noise suppression
When the AUn channels are not connected to the COMn channels, the AUn channels are
automatically connected to 200 Ω shunt resistors which helps to discharge any capacitance
built up on the AUn channels. This will reduce the possibility of pop and click noise
occurrence when switching between USB and audio sources.
BUS
detection feature
BUSTHRES
OVDT
. If V
. The overvoltage fault protection helps to protect the switch and
BUS
Doc ID 18165 Rev 2
is constantly present in the application, driving the audio
CC
– 5.0 V) on the AUn channels. If the device
BUS
BUS
voltage is detected to be
detection.
Operation
OVDT
,
9/21