9

FN6661.2

March 18, 2010

FIGURE 6A. MEASUREMENT POINTS

FIGURE 6B. TEST CIRCUIT

FIGURE 6. SKEW TEST

FIGURE 7. CLICK AND POP TEST CIRCUIT

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

CTRL

GND

L

COM-

AUDIO PRECISION

SET AUDIO ANALYZER FOR PEAK DETECTION, 32 SAMPLES/SEC, A WEIGHTED FILTER, MANUAL RANGE 1X/Y, UNITS TO DBV

CTRL

SYSTEM II CASCADE

ANALYZER

R

COM+

FLOAT

3.3V

CHA

CHB

0V TO 1.25V

DC STEP OR

CLICK

AND

POP

1.25V TO 0V

DC STEP

ISL54210