ISL54212 Datasheet, PDF (6/15 Pages) Intersil Corporation – MP3/USB 2.0 High Speed Switch with Negative Signal Handling

ISL54212
Test Circuits and Waveforms (Continued)
V_{DD C}
LOGIC
INPUT
V_DD
0V
V_INPUT
CTRL
D- or D+
L or R
IN
COMx
V_OUT
R_L
C_L
50Ω
10pF
V_OUT
SWITCH
OUTPUT
0V
90%
t_D
FIGURE 2A. MEASUREMENT POINTS
V_IN
GND
Repeat test for all switches. C_L includes fixture and stray
capacitance.
FIGURE 2B. TEST CIRCUIT
FIGURE 2. BREAK-BEFORE-MAKE TIME
V_DD
C
R_ON = V₁/100mA
V_{L OR R}
CTRL
L OR R
V₁
IN
100mA
COMx
GND
VDD
Repeat test for all switches.
FIGURE 3. AUDIO R_ON TEST CIRCUIT
V_DD
C
R_ON = V₁/40mA
V_{D- OR D+}
CTRL
D- OR D+
V₁
IN
0V
40mA
COMx
GND
Repeat test for all switches.
FIGURE 4. USB R_ON TEST CIRCUIT
6
FN6556.0
September 18, 2007