6

FN6088.5

July 31, 2007

Detailed Description

The ISL84684 is a bidirectional, dual single pole/double

throw (SPDT) analog switch that offers precise switching

capability from a single 1.65V to 3.6V supply with low

ON-resistance (0.35

Ω) and high speed operation

suited for portable battery powered equipment due to its low

operating supply voltage (1.65V), low power consumption

(2.7µW max), low leakage currents (60nA max), and its tiny

TDFN and MSOP packages. The ultra low ON-resistance and

applications that require signal reproduction.

External V+ Series Resistor

For improved ESD and latch-up immunity, Intersil

recommends adding a 100

Ω resistor in series with the V+

power supply pin of the ISL84684 IC (see Figure 8).

FIGURE 4. OFF ISOLATION TEST CIRCUIT

FIGURE 6. CROSSTALK TEST CIRCUIT

FIGURE 7. CAPACITANCE TEST CIRCUIT

ANALYZER

SIGNAL

GENERATOR

V+

C

0V or V+

NO or NC

COM

IN

GND

Signal direction through switch is reversed, worst case values

are recorded. Repeat test for all switches.

V+

C

0V or V+

NO or NC

COM

IN

GND

100mA

Repeat test for all switches.

0V or V+

ANALYZER

V+

C

NO or NC

SIGNAL

GENERATOR

GND

COM

50

Ω

NC

COM

NC or NO

Signal direction through switch is reversed; worst case values

are recorded. Repeat test for all switches.

V+

C

GND

NO or NC

COM

IN

IMPEDANCE

ANALYZER

0V or V+

Repeat test for all switches.

FIGURE 8. V+ SERIES RESISTOR FOR ENHANCED ESD AND

LATCH-UP IMMUNITY

IN

COM

100

Ω

NO

NC

V+

GND

C

OPTIONAL

PROTECTION

RESISTOR

ISL84684