ISL54405_14 Datasheet, PDF (7/20 Pages) Intersil Corporation – CD/MP3 Quality Stereo 2:1 Multiplexer with Click and Pop Elimination

ISL54405
Test Circuits and Waveforms (Continued)
LOGIC
INPUT
V_DD
0V
SWITCH
OUTPUT
V_{OUT 0V}
V_NX
90%
t_D
LOGIC
INPUT
V_{DD C}
Lx
R OR L
Rx
SEL
GND MUTE
V_OUT
R_L
C_L
FIGURE 3A. MEASUREMENT POINTS
Repeat test for all switches. C_L includes fixture and stray capacitance.
FIGURE 3B. TEST CIRCUIT
FIGURE 3. BREAK-BEFORE-MAKE TIME
SIGNAL
GENERATOR
V_DD
C
MUTE
Lx or Rx
SEL 0V OR V_DD
r_ON = V₁/80mA
Lx or Rx
V_NX
80mA
V₁
V_DD
C
SEL ^{0V OR VDD}
ANALYZER
R_L
L, R
GND
L, R
GND MUTE
Signal direction through switch is reversed, worst case values
are recorded. Repeat test for all switches.
FIGURE 4. OFF-ISOLATION TEST CIRCUIT
SIGNAL
GENERATOR
V_DD
C
Lx OR Rx
L, R
SEL
0V OR V_DD
L, R
Lx or Rx
ANALYZER
NC
GND ^MUTE
R_L
Signal direction through switch is reversed, worst case values
are recorded. Repeat test for all switches.
FIGURE 6. CROSSTALK TEST CIRCUIT
Repeat test for all switches.
FIGURE 5. r_ON TEST CIRCUIT
IMPEDANCE
ANALYZER
Lx or Rx
V_DD
C
SEL ^{0V OR V}DD
L, R
GND MUTE
Repeat test for all switches.
FIGURE 7. CAPACITANCE TEST CIRCUIT
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7
FN6699.2
May 6, 2014