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| ISL54205A Datasheet, PDF (6/14 Pages) Intersil Corporation – MP3/USB 2.0 High Speed Switch with Negative Signal Handling | |||
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ISL54205A
Test Circuits and Waveforms (Continued)
VBUSH
LOGIC
INPUT
VBUSL
SWITCH
OUTPUT
VOUT
0V
VINPUT
90%
tD
VBUS
VDD C
CTRL
D- or D+
L or R
VBUS
GND
COMx
VOUT
RL
CL
50Ω
10pF
FIGURE 2A. MEASUREMENT POINTS
Repeat test for all switches. CL includes fixture and stray capacitance.
FIGURE 2B. TEST CIRCUIT
FIGURE 2. BREAK-BEFORE-MAKE TIME
VDD
C
rON = V1/100mA
VL OR R
CTRL
L OR R
V1
100mA
COMX
GND
VBUS OV OR FLOAT
Repeat test for all switches.
FIGURE 3. AUDIO rON TEST CIRCUIT
VDD
C
rON = V1/40mA
VD- or D+
CTRL
D- or D+
40mA
V1
COMx
GND
VBUS 4.4V to 5.25V
Repeat test for all switches.
FIGURE 4. USB rON TEST CIRCUIT
6
FN6342.1
December 7, 2006
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