8

FN6817.3

May 4, 2009

FIGURE 5. CAPACITANCE TEST CIRCUIT

FIGURE 6. AUDIO CROSSTALK TEST CIRCUIT

FIGURE 7A. MEASUREMENT POINTS

FIGURE 7B. TEST CIRCUIT

FIGURE 7. SKEW TEST

FIGURE 8. CLICK AND POP TEST CIRCUIT

C

GND

AUDIO OR USB

COMx

IMPEDANCE

ANALYZER

Repeat test for all switches.

CTRL

0V OR FLOAT

ANALYZER

C

L OR R

SIGNAL

GENERATOR

32

Ω

GND

32

Ω

NC

COMx

R or L

CTRL

COMx

DIN+

DIN-

OUT+

OUT-

50%

50%

90%

10%

10%

10%

10%

90%

90%

50%

90%

50%

OUT+

COM-

D+

GND

C

D-

COM+

OUT-

DIN+

DIN-

|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.

15.8

Ω

15.8

Ω

143

Ω

143

Ω

45

Ω

45

Ω

C0

C1

0V

GND

L

COM-

C0

AUDIO PRECISION

Set Audio Analyzer for Peak Detection, 32 Samples/Sec, Aweighted Filter, Manual Range 1X/Y, Units to dBV

C1

SYSTEM II CASCADE

ANALYZER

R

COM+

3.3V

CHA

CHB

0V TO 1.25V

DC STEP

CLICK

AND

POP

OR

1.25V TO 0V

DC STEP

0V 0V

ALL OFF MODE

ISL54217