ISL54217 Intersil Corporation, ISL54217 Datasheet - Page 8

• Manufacturer Part Number: ISL54217
• Description: USB 2.0 High-Speed x 2Channels/Stereo Audio Dual SP3T
• Manufacturer: Intersil Corporation

Test Circuits and Waveforms
Repeat test for all switches.
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IMPEDANCE
ANALYZER
OUT+
DIN+
DIN-
OUT-
FIGURE 5. CAPACITANCE TEST CIRCUIT
FIGURE 7A. MEASUREMENT POINTS
Set Audio Analyzer for Peak Detection, 32 Samples/Sec, Aweighted Filter, Manual Range 1X/Y, Units to dBV
90%
10%
90%
10%
R
t
t
t
fi
LOAD
ri
f0
t
50%
50%
ro
AUDIO OR USB
COMx
50%
8
50%
90%
10%
t
10%
90%
skew_i
SYSTEM II CASCADE
CTRL
t
AUDIO PRECISION
skew_o
GND
ANALYZER
V
DD
CHA
(Continued)
V
FIGURE 8. CLICK AND POP TEST CIRCUIT
Cx
R
LOAD
CHB
C
V
V
CxL
CxH
FIGURE 7. SKEW TEST
OR
ALL OFF MODE
COM+
COM-
ISL54217
C0
0V 0V
C1
|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.
CLICK
SIGNAL
GENERATOR
AND
POP
V
3.3V
DIN+
ANALYZER
DIN-
DD
GND
V
FIGURE 6. AUDIO CROSSTALK TEST CIRCUIT
DD
0V
15.8Ω
15.8Ω
143Ω
0V OR FLOAT
L
R
143Ω
32Ω
FIGURE 7B. TEST CIRCUIT
C0
C1
COM-
COM+
V
V
GND
COMx
V
L OR R
Cx
DD
DD
CTRL
0V TO 1.25V
DC STEP
1.25V TO 0V
DC STEP
C
OR
GND
V
DD
R or L
D+
D-
COMx
C
December 11, 2008
C
C
L
L
32Ω
OUT+
OUT-
45Ω
45Ω
FN6817.0
NC