isl54211 Intersil Corporation, isl54211 Datasheet - Page 7

• Manufacturer Part Number: isl54211
• Description: Mp3/usb 2.0 High Speed Switch With Negative Signal Handling/click And Pop Suppression
• Manufacturer: Intersil Corporation

Test Circuits and Waveforms
Repeat test for all switches.
IMPEDANCE
ANALYZER
OUT+
DIN+
DIN-
OUT-
FIGURE 4. CAPACITANCE TEST CIRCUIT
FIGURE 6A. MEASUREMENT POINTS
90%
10%
90%
10%
t
t
t
fi
ri
f0
t
50%
50%
ro
AUDIO OR USB
COMx
50%
7
50%
90%
10%
t
10%
90%
skew_i
CTRL
t
skew_o
GND
V
DD
(Continued)
IN
C
V
V
INL
INH
FIGURE 6. SKEW TEST
OR
ISL54211
|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.
Repeat test for all switches.
|tskew_i| Change in Skew through the Switch for Input Signals.
SIGNAL
GENERATOR
DIN+
ANALYZER
DIN-
V
FIGURE 5. AUDIO CROSSTALK TEST CIRCUIT
INH
15.8Ω
15.8Ω
143Ω
0V OR FLOAT
143Ω
R
L
FIGURE 6B. TEST CIRCUIT
IN
COM-
COM+
CTRL
V
IN
GND
COMx
L OR R
DD
CTRL
C
GND
V
DD
R OR L
D+
D-
COMx
C
C
C
L
L
August 25, 2008
32Ω
OUT+
OUT-
45Ω
45Ω
FN6662.1
NC