ISL84684 Intersil Corporation, ISL84684 Datasheet - Page 6

• Manufacturer Part Number: ISL84684
• Description: Dual SPDT Analog Switch
• Manufacturer: Intersil Corporation

Test Circuits and Waveforms
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 (0.29Ω) and high speed operation (t
t
battery powered equipment due to its low operating supply
voltage (1.65V), low power consumption (2.7µW max), low
leakage currents (60nA max), and the tiny Thin DFN and
MSOP packages. The ultra low on-resistance and Ron
flatness provide very low insertion loss and distortion to
applications that require signal reproduction.
Signal direction through switch is reversed, worst case values
are recorded. Repeat test for all switches.
Signal direction through switch is reversed, worst case values
are recorded. Repeat test for all switches.
OFF
SIGNAL
GENERATOR
SIGNAL
GENERATOR
ANALYZER
ANALYZER
= 6ns). The device is especially well suited for portable
FIGURE 4. OFF ISOLATION TEST CIRCUIT
FIGURE 6. CROSSTALK TEST CIRCUIT
R
R
0V or V+
L
L
NO or NC
COM
IN
NO or NC
COM
1
6
GND
GND
NC or NO
COM
V+
V+
(Continued)
IN
C
C
ON
0V or V+
= 14ns,
50Ω
N.C.
ISL84684
Supply Sequencing and Overvoltage Protection
With any CMOS device, proper power supply sequencing is
required to protect the device from excessive input currents
which might permanently damage the IC. All I/O pins contain
ESD protection diodes from the pin to V+ and to GND (see
Figure 8). To prevent forward biasing these diodes, V+ must
be applied before any input signals, and the input signal
voltages must remain between V+ and GND. If these
conditions cannot be guaranteed, then one of the following
two protection methods should be employed.
Logic inputs can easily be protected by adding a 1kΩ
resistor in series with the input (see Figure 8). The resistor
limits the input current below the threshold that produces
permanent damage, and the sub-microamp input current
produces an insignificant voltage drop during normal
operation.
Repeat test for all switches.
Repeat test for all switches.
IMPEDANCE
ANALYZER
V
NX
R
ON
100mA
FIGURE 7. CAPACITANCE TEST CIRCUIT
= V
1
FIGURE 5. R
/100mA
V
1
COM
NO or NC
ON
NO or NC
COM
TEST CIRCUIT
GND
GND
V+
IN
V+
IN
C
V
V
C
INL
INL
or V
or V
INH
INH