ISL8499IRZ Intersil, ISL8499IRZ Datasheet - Page 7

• Manufacturer Part Number: ISL8499IRZ
• Description: IC SWITCH QUAD SPDT 16QFN
• Manufacturer: Intersil

Specifications of ISL8499IRZ

• Function: Switch
• Circuit: 4 x SPDT
• On-state Resistance: 250 mOhm
• Voltage Supply Source: Single Supply
• Voltage - Supply, Single/dual (±): 1.65 V ~ 4.5 V
• Current - Supply: 0.09µA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-VQFN Exposed Pad, 16-HVQFN, 16-SQFN, 16-DHVQFN
• Rohs Compliant: YES
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Test Circuits and Waveforms
Detailed Description
The ISL8499 is a bidirectional, quad single pole/double
throw (SPDT) analog switch that offers precise switching
capability from a single 1.65V to 4.5V supply with low
on-resistance (0.24Ω) and high speed operation
(t
suited for portable battery powered equipment due to its low
operating supply voltage (1.65V), low power consumption
(2.7µW max), low leakage currents (150nA max), and the tiny
TQFN, QFN and TSSOP packages. The ultra low
ON-Resistance and r
loss and distortion to applications that require signal
reproduction.
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
ON
SIGNAL
GENERATOR
SIGNAL
GENERATOR
ANALYZER
ANALYZER
= 15ns, t
FIGURE 4. OFF ISOLATION TEST CIRCUIT
FIGURE 6. CROSSTALK TEST CIRCUIT
OFF
R
R
0V or V+
L
L
= 13ns). The device is especially well
ON
flatness provide very low insertion
NO or NC
COM
IN
NO or NC
COM
1
7
GND
GND
NC or NO
COM
V+
V+
IN
(Continued)
C
C
0V or V+
50Ω
N.C.
ISL8499
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.
This method is not acceptable for the signal path inputs.
Adding a series resistor to the switch input defeats the
purpose of using a low r
diodes can be added in series with the supply pins to provide
overvoltage protection for all pins (see Figure 8). These
IMPEDANCE
ANALYZER
V
NX
r
ON
100mA
FIGURE 7. CAPACITANCE TEST CIRCUIT
= V
1
/100mA
FIGURE 5.
V
1
ON
COM
NO or NC
r
ON
switch, so two small signal
NO or NC
COM
TEST CIRCUIT
GND
GND
V+
IN
V+
IN
C
0V or V+
0V or V+
C
February 5, 2008
FN6111.3