ISL54207IRZ Intersil, ISL54207IRZ Datasheet - Page 10

• Manufacturer Part Number: ISL54207IRZ
• Description: IC SWITCH USB/CVBS/AUDIO 10-TDFN
• Manufacturer: Intersil

Specifications of ISL54207IRZ

• Function: Switch
• Circuit: 2 x SPDT
• Voltage Supply Source: Single Supply
• Voltage - Supply, Single/dual (±): 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-TDFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

USB Mode
If the VBUS pin = Logic “1” and CTRL pin = Logic “0” or
Logic “1,” the part will go into USB mode. In USB mode, the
NO1 and NO2 5Ω switches are ON and the NC1 and NC2
3Ω audio switches are OFF (high impedance). When a USB
cable from a computer or USB hub is connected at the
common connector, the voltage at the VBUS pin will be
driven to be in the range of 4.4V to 5.25V. The ISL54207 part
will go into the USB mode. In USB mode, the computer or
USB hub transceiver and the media player USB transceiver
are connected and digital data will be able to be transmitted
back and forth.
When the USB cable is disconnected, the ISL54207
automatically turns the NO1 and NO2 switches OFF.
Low Power Mode
If the VBUS pin = Logic “0” and CTRL pin = Logic “0,” the
part will be in the Low Power mode. In the Low Power mode,
the NCx switches and the NOx switches are OFF (high
impedance). In this state, the device draws typically 1nA of
current.
EXTERNAL V
The ISL54207 contains a clamp circuit between VBUS and
VDD. Whenever the V
voltage by more than 2.55V, current will flow through this
clamp circuitry into the V
During normal USB operation, V
3.6V and V
Typical Performance Curves
FIGURE 10. THD+N vs SUPPLY VOLTAGE vs FREQUENCY
0.09
0.08
0.07
0.06
0.05
0.04
0.11
0.1
20
R
V
LOAD
LOAD
BUS
V
V
DD
DD
BUS
= 32Ω
= 0.707V
is in the range of 4.4V to 5.25V. The clamp
= 2.7V
= 2.6V
SERIES RESISTOR
RMS
BUS
200
DD
FREQUENCY (Hz)
voltage is greater than the V
V
DD
power supply bus.
10
= 3V
DD
is in the range of 2.7V to
2k
T
A
= +25°C, Unless Otherwise Specified
V
DD
= 3.6V
DD
20k
ISL54207
circuit is not active and no current will flow through the clamp
into the V
In a USB application, the situation can exist where the V
voltage from the computer could be applied at the VBUS pin
before the V
range and current will flow through the clamp into the V
power supply bus. This current could be quite high when
V
components connected in the circuit. In the application
circuit, a 22k
pin to limit the current to a safe level during this situation.
It is recommended that a current limiting resistor in the range
of 10k
will have minimal impact on the logic level at the VBUS pin
during normal USB operation and protect the circuit during
the time V
operating voltage.
Note: No external resistor is required in applications where
V
POWER
The power supply connected at VDD (pin 1) provides power
to the ISL54207 part. Its voltage should be kept in the range
of 2.7V to 3.6V when used in a USB/Audio/Video application
to ensure you get proper switching when the V
at its lower limit of 4.4V.
DD
BUS
FIGURE 11. THD+N vs SIGNAL LEVELS vs FREQUENCY
0.4
0.3
0.2
0.1
0
is OFF or at 0V and could potentially damage other
Ω
20
will not exceed V
to 50k
R
V
DD
DD
BUS
LOAD
DD
Ω
= 3V
supply.
Ω
resistor has been put in series with the VBUS
is present before V
= 32Ω
voltage is up to its normal operating voltage
be connected in series with the VBUS pin. It
200
DD
FREQUENCY (Hz)
by more than 2.55V.
1V
2V
2.5V
3V
P-P
P-P
P-P
P-P
DD
is up to its normal
2k
BUS
December 5, 2006
voltage is
FN6403.0
DD
BUS
20k