ISL54210 Datasheet, PDF (10/21 Pages) Intersil Corporation – MP3/USB 2.0 High Speed Switch with Negative Signal Handling/Click and Pop Suppression

ISL54210
Test Circuits and Waveforms (Continued)
AUDIO PRECISION
SYSTEM II CASCADE
ANALYZER
CHA CHB
3.3V
FLOAT
C
V_BUS
V_DD
R_LOAD
R_LOAD
COM-
COM+
L
CLICK
AND
R
POP
GND CTRL
0V TO V_DD
SQUARE WAVE
SET AUDIO ANALYZER FOR PEAK DETECTION, 32 SAMPLES/SEC, A WEIGHTED FILTER, MANUAL RANGE 1X/Y, UNITS TO DBV
FIGURE 8. CLICK AND POP TEST CIRCUIT
20kΩ
20kΩ
0V TO 3.0V
DC STEP OR
3.0V TO 0V
V_DD
DC STEP
1Hz
COM-
COM+
CLICK
AND
POP
220µF
L
R
220µF
GND VBUS CTRL
1.5V OR 0V
POWER SUPPLY TURN-ON/TURN-OFF CLICK AND POP TRANSIENT TEST
FIGURE 9. CLICK AND POP TEST CIRCUIT #2
10
FN6661.2
March 18, 2010