isl54209 Intersil Corporation, isl54209 Datasheet - Page 7

• Manufacturer Part Number: isl54209
• Description: Mp3/usb 2.0 High Speed Switch With Negative Signal Handling And Low Power Shutdown
• Manufacturer: Intersil Corporation

Test Circuits and Waveforms
Repeat test for all switches.
IMPEDANCE
ANALYZER
FIGURE 5. CAPACITANCE TEST CIRCUIT
OUT+
DIN+
DIN-
OUT-
FIGURE 7A. MEASUREMENT POINTS
90%
10%
90%
10%
t
COMx
AUDIO OR USB
t
t
fi
7
ri
f0
t
50%
50%
ro
50%
50%
90%
10%
CTRL
t
10%
90%
GND
skew_i
t
skew_o
V
DD
(Continued)
IN
C
0V OR V
FIGURE 7. SKEW TEST
DD
ISL54209
|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 direction through switch is reversed, worst case values
are recorded. Repeat test for all switches.
SIGNAL
GENERATOR
DIN+
ANALYZER
DIN-
V
FIGURE 6. AUDIO CROSSTALK TEST CIRCUIT
DD
15.8Ω
15.8Ω
143Ω
0V
143Ω
R
L
FIGURE 7B. TEST CIRCUIT
IN
COM+
COM-
CTRL
V
IN
GND
COMx
L OR R
DD
CTRL
C
GND
V
DD
R OR L
D+
COMx
D-
C
December 20, 2007
C
C
L
L
32Ω
OUT+
OUT-
45Ω
45Ω
FN6627.0
NC