5

FN6095.3

July 31, 2006

Test Circuits and Waveforms

Logic input waveform is inverted for switches that have the opposite

logic sense.

capacitance.

Logic input waveform is inverted for switches that have the opposite

logic sense.

capacitance.

FIGURE 1. SWITCHING TIMES

FIGURE 2A. Q MEASUREMENT POINTS

FIGURE 2B. Q TEST CIRCUIT

FIGURE 2. CHARGE INJECTION

50%

V+

0V

LOGIC

INPUT

SWITCH

OUTPUT

90%

0V

90%

VNO0

V

OUT

V

NOx

R

L

R

L

R

ON

()

+

------------------------------

=

LOGIC

INPUT

COM

NO0

INH

50

Ω

35pF

GND

NO1-NO7

VNO0

ADD2-0

C

V+

C

50%

90%

V+

VNO7

0V

LOGIC

INPUT

SWITCH

OUTPUT

10%

0V

VNO0

V

OUT

V

NOx

R

L

R

L

R

ON

()

+

------------------------------

=

LOGIC

INPUT

COM

NO0

ADD2-0

50

Ω

35pF

GND

NO1-NO7

VNO0

INH

C

V+

C

OFF

ON

OFF

Q =

SWITCH

OUTPUT

LOGIC

INPUT

V+

0V

GND

COM

NOx

LOGIC

INPUT

INH

ADD2

V+

C

Repeat test for other switches.

1000pF

0

Ω

ADD1

ADD0

CHANNEL

SELECT

ISL84781