isl54207 Intersil Corporation, isl54207 Datasheet - Page 7

• Manufacturer Part Number: isl54207
• Description: Low Voltage, Dual Spdt, Usb/cvbs/ Audio Switches, With Negative Signal Capability
• Manufacturer: Intersil Corporation

Test Circuits and Waveforms
Repeat test for all switches.
IMPEDANCE
ANALYZER
OUT+
DIN+
DIN-
OUT-
FIGURE 5. CAPACITANCE TEST CIRCUIT
FIGURE 7A. MEASUREMENT POINTS
90%
10%
90%
10%
t
t
t
fi
ri
f0
t
50%
50%
ro
NCx or NOx
COMx
50%
7
50%
90%
10%
t
10%
90%
skew_i
CTRL
t
skew_o
GND
(Continued)
V
DD
VBUS
C
V
V
BUSL
BUSH
FIGURE 7. SKEW TEST
or
ISL54207
Signal direction through switch is reversed, worst case
values are recorded. Repeat test for all switches
|tro - tri| Delay Due to Switch for Rising Input and Rising Output Signals.
|tfo - tfi| Delay Due to Switch for Falling Input and Falling Output Signals
|tskew_0| Change in Skew through the Switch for Output Signals.
|tskew_i| Change in Skew through the Switch for Input Signals.
SIGNAL
GENERATOR
DIN+
ANALYZER
DIN-
V
BUSH
FIGURE 6. AUDIO CROSSTALK TEST CIRCUIT
15.8Ω
15.8Ω
143Ω
0V or Float
143Ω
R
L
FIGURE 7B. TEST CIRCUIT
VBUS
COM2
COM1
CTRL
V
VBUS
GND
COMx
NCx
DD
CTRL
C
GND
R or L
NO1
NO2
V
COMx
DD
C
C
C
December 5, 2006
L
L
75Ω
OUT+
45Ω
OUT-
45Ω
FN6403.0
N.C.