1
FN6128.0
ISL8484
Ultra Low ON-Resistance, +1.65V to +4.5V,
Single Supply, Dual SPDT Analog Switch
The Intersil ISL8484 device is a low ON-resistance, low
voltage, bidirectional, dual single-pole/double-throw (SPDT)
analog switch designed to operate from a single +1.65V to
+4.5V supply. Targeted applications include battery powered
equipment that benefit from low R
ON
(0.23
) and fast
switching speeds (t
ON
= 20ns, t
OFF
= 15ns). The digital logic
input is 1.8V logic-compatible when using a single +3V supply.
With a supply voltage of 4.2V and logic high voltage of 2.85V
at both logic inputs, the part draws only 10A max of I+
current.
Cell phones, for example, often face ASIC functionality
limitations. The number of analog input or GPIO pins may be
limited and digital geometries are not well suited to analog
switch performance. This part may be used to "mux-in"
additional functionality while reducing ASIC design risk. The
ISL8484 is offered in small form factor packages, alleviating
board space limitations.
The ISL8484 is a committed dual single-pole/double-throw
(SPDT) that consist of two normally open (NO) and two
normally closed (NC) switches. This configuration can be
used as a dual 2-to-1 multiplexer. The ISL8484 is pin
compatible with the MAX4684 and MAX4685.
Related Literature
Technical Brief TB363 "Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)"
Application Note AN557 "Recommended Test Procedures
for Analog Switches"
Features
Pb-Free Available as an Option (RoHS Compliant)
(see Ordering Info)
Pin Compatible Replacement for the MAX4684 and
MAX4685
ON Resistance (R
ON
)
- V+ = +4.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.23
- V+ = +3.0V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.27
- V+ = +1.8V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.45
R
ON
Matching Between Channels . . . . . . . . . . . . . . . . 0.03
R
ON
Flatness Across Signal Range . . . . . . . . . . . . . . . 0.03
Single Supply Operation . . . . . . . . . . . . . . . +1.65V to +4.5V
Low Power Consumption (P
D
). . . . . . . . . . . . . . . . <0.3
W
Fast Switching Action (V+ = +4.3V)
- t
ON
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20ns
- t
OFF
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15ns
ESD HBM Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>9kV
Guaranteed Break-before-Make
1.8V Logic Compatible (+3V supply)
Low I+ Current when VinH is not at the V+ Rail
Available in 10 lead 3x3 Thin DFN and 10 lead MSOP
Applications
Battery powered, Handheld, and Portable Equipment
- Cellular/mobile Phones
- Pagers
- Laptops, Notebooks, Palmtops
Portable Test and Measurement
Medical Equipment
Audio and Video Switching
TABLE 1. FEATURES AT A GLANCE
ISL8484
Number of Switches
2
SW
SPDT or 2-1 MUX
4.3V R
ON
0.23
4.3V t
ON
/t
OFF
20ns/15ns
3V R
ON
0.27
3V t
ON
/t
OFF
25ns/20ns
1.8V R
ON
0.45
1.8V t
ON
/t
OFF
65ns/50ns
Packages
10 Ld 3x3 Thin DFN, 10 Ld MSOP
Data Sheet
February 25, 2005
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
2
FN6128.0
February 25, 2005
Pinout
(Note 1)
ISL8484 (TDFN, MSOP)
TOP VIEW
NOTE:
1. Switches Shown for Logic "0" Input.
Truth Table
LOGIC
PIN NC1 and NC2
PIN NO1 and NO2
0
ON
OFF
1
OFF
ON
NOTE: Logic "0"
0.5V. Logic "1" 1.4V with a 3V supply.
Pin Descriptions
PIN
FUNCTION
V+
System Power Supply Input (+1.65V to +4.5V)
GND
Ground Connection
IN
Digital Control Input
COM
Analog Switch Common Pin
NO
Analog Switch Normally Open Pin
NC
Analog Switch Normally Closed Pin
V+
NO1
COM1
IN1
NC1
NO2
COM2
IN2
NC2
GND
1
2
3
4
5
10
9
8
7
6
Ordering Information
PART NO.
(BRAND)
TEMP.
RANGE (C)
PACKAGE
PKG.
DWG. #
ISL8484IR
(484)
-40 to 85
10 Ld 3x3 Thin DFN L10.3x3A
ISL8484IR-T
(484)
-40 to 85
10 Ld 3x3 Thin DFN
Tape and Reel
L10.3x3A
ISL8484IU
(8484)
-40 to 85
10 Ld MSOP
M10.118
ISL8484IU-T
(8484)
-40 to 85
10 Ld MSOP
Tape and Reel
M10.118
ISL8484IRZ
(484Z)
(See Note)
-40 to 85
10 Ld 3x3 Thin DFN
(Pb-free)
L10.3x3A
ISL8484IRZ-T
(484Z)
(See Note)
-40 to 85
10 Ld 3x3 Thin DFN
Tape and Reel
(Pb-free)
L10.3x3A
ISL8484IUZ
(8484Z)
(See Note)
-40 to 85
10 Ld MSOP
(Pb-free)
M10.118
ISL8484IUZ-T
(8484Z)
(See Note)
-40 to 85
10 Ld MSOP
Tape and Reel
(Pb-free)
M10.118
NOTE: Intersil Pb-free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which are RoHS compliant and compatible
with both SnPb and Pb-free soldering operations. Intersil Pb-free
products are MSL classified at Pb-free peak reflow temperatures that
meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
ISL8484
3
FN6128.0
February 25, 2005
Absolute Maximum Ratings
Thermal Information
V+ to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 4.7V
Input Voltages
NO, NC, IN (Note 2). . . . . . . . . . . . . . . . . . . . . -0.3 to ((V+) + 0.3V)
Output Voltages
COM (Note 2). . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to ((V+) + 0.3V)
Continuous Current NO, NC, or COM . . . . . . . . . . . . . . . . .
300mA
Peak Current NO, NC, or COM
(Pulsed 1ms, 10% Duty Cycle, Max) . . . . . . . . . . . . . . . . . .
500mA
ESD Rating:
HBM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>9kV
MM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>500V
CDM
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .>1kV
Thermal Resistance (Typical)
JA
(C/W)
10 Ld 3x3 TDFN Package (Note 3) . . . . . . . . . . . . .
110
10 Ld MSOP Package (Note 3) . . . . . . . . . . . . . . . .
190
Maximum Junction Temperature (Plastic Package). . . . . . . . 150C
Maximum Storage Temperature Range . . . . . . . . . . . . . -65C to 150C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300C
(Lead Tips Only)
Operating Conditions
Temperature Range
ISL8484IX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40C to 85C
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
2. Signals on NC, NO, IN, or COM exceeding V+ or GND are clamped by internal diodes. Limit forward diode current to maximum current ratings.
3.
JA
is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications - 4.3V Supply
Test Conditions: V+ = +3.9V to +4.5V, GND = 0V, V
INH
= 1.6V, V
INL
= 0.5V (Notes 4, 6),
Unless Otherwise Specified
PARAMETER
TEST CONDITIONS
TEMP
(C)
(NOTE 5)
MIN
TYP
(NOTE 5)
MAX
UNITS
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, V
ANALOG
Full
0
-
V+
V
ON Resistance, R
ON
V+ = 3.9V, I
COM
= 100mA, V
NO
or V
NC
= 0V to V+,
(See Figure 5)
25
-
0.23
-
Full
-
0.26
-
R
ON
Matching Between Channels,
R
ON
V+ = 3.9V, I
COM
= 100mA, V
NO
or V
NC
= Voltage at max
R
ON,
(Note 9)
25
-
0.03
-
Full
-
0.04
-
R
ON
Flatness, R
FLAT(ON)
V+ = 3.9V, I
COM
= 100mA, V
NO
or V
NC
= 0V to V+,
(Note 7)
25
-
0.03
-
Full
-
0.04
-
NO or NC OFF Leakage Current,
I
NO(OFF)
or I
NC(OFF)
V+ = 4.5V, V
COM
= 0.3V, 3V, V
NO
or V
NC
= 3V, 0.3V
25
-45
-
45
nA
Full
-110
-
110
nA
COM ON Leakage Current,
I
COM(ON)
V
+
= 4.5V, V
COM
= 0.3V, 3V, or V
NO
or V
NC
= 0.3V,
3V, or Floating
25
-45
-
45
nA
Full
-100
-
100
nA
DYNAMIC CHARACTERISTICS
Turn-ON Time, t
ON
V+ = 3.9V, V
NO
or V
NC
= 3.0V, R
L
= 50
, C
L
= 35pF,
(See Figure 1, Note 8)
25
-
20
30
ns
Full
-
-
35
ns
Turn-OFF Time, t
OFF
V+ = 3.9V, V
NO
or V
NC
= 3.0V, R
L
= 50
, C
L
= 35pF,
(See Figure 1, Note 8)
25
-
15
25
ns
Full
-
-
30
ns
Break-Before-Make Time Delay, t
D
V+ = 4.5V, V
NO
or V
NC
= 3.0V, R
L
= 50
, C
L
= 35pF,
(See Figure 3, Note 8)
Full
2
4
-
ns
Charge Injection, Q
C
L
= 1.0nF, V
G
= 0V, R
G
= 0
, (
See Figure 2)
25
-
128
-
pC
OFF Isolation
R
L
= 50
, C
L
= 5pF, f = 100kHz, V
COM
= 1V
RMS
,
(See Figure 4)
25
-
68
-
dB
Crosstalk (Channel-to-Channel)
R
L
= 50
, C
L
= 5pF, f = 100kHz, V
COM
= 1V
RMS
,
(See Figure 6)
25
-
-95
-
dB
Total Harmonic Distortion
f = 20Hz to 20kHz, V
COM
= 2V
P-P
, R
L
= 600
25
-
0.003
-
%
NO or NC OFF Capacitance, C
OFF
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V, (See Figure 7)
25
-
115
-
pF
ISL8484
4
FN6128.0
February 25, 2005
COM ON Capacitance, C
COM(ON)
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V, (See Figure 7)
25
-
224
-
pF
POWER SUPPLY CHARACTERISTICS
Power Supply Range
Full
1.65
4.5
V
Positive Supply Current, I+
V+ = +4.5V, V
IN
= 0V or V+
25
-
-
0.08
A
Full
-
-
1
A
Positive Supply Current, I+
V+ = +4.2V, V
IN
= 2.85V
25
-
-
10
A
DIGITAL INPUT CHARACTERISTICS
Input Voltage Low, V
INL
Full
-
-
0.5
V
Input Voltage High, V
INH
Full
1.6
-
-
V
Input Current, I
INH
, I
INL
V+ = 4.5V, V
IN
= 0V or V+, (Note 8)
Full
-0.5
-
0.5
A
NOTES:
4. V
IN
= input voltage to perform proper function.
5. The algebraic convention, whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
6. Parts are 100% tested at +25C. Limits across the full temperature range are guaranteed by design and correlation.
7. Flatness is defined as the difference between maximum and minimum value of on-resistance over the specified analog signal range.
8. Guaranteed but not tested.
9. R
ON
matching between channels is calculated by subtracting the channel with the highest max Ron value from the channel with lowest max Ron
value, between NC1 and NC2 or between NO1 and NO2.
Electrical Specifications - 3V Supply
Test Conditions: V+ = +2.7V to +3.3V, GND = 0V, V
INH
= 1.4V, V
INL
= 0.5V (Notes 4, 6),
Unless Otherwise Specified
PARAMETER
TEST CONDITIONS
TEMP
(C)
(NOTE 5)
MIN
TYP
(NOTE 5)
MAX
UNITS
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, V
ANALOG
Full
0
-
V+
V
ON Resistance, R
ON
V+ = 2.7V, I
COM
= 100mA, V
NO
or V
NC
= 0V to V+,
(See Figure 5)
25
-
0.29
0.4
Full
-
-
0.6
R
ON
Matching Between Channels,
R
ON
V+ = 2.7V, I
COM
= 100mA, V
NO
or V
NC
= Voltage at
max R
ON
, (Note 9)
25
-
0.03
0.06
Full
-
-
0.06
R
ON
Flatness, R
FLAT(ON)
V+ = 2.7V, I
COM
= 100mA, V
NO
or V
NC
= 0V to V+,
(Note 7)
25
-
0.03
0.15
Full
-
-
0.15
NO or NC OFF Leakage Current,
I
NO(OFF)
or I
NC(OFF)
V+ = 3.3V, V
COM
= 0.3V, 3V, V
NO
or V
NC
= 3V, 0.3V
25
-
1.1
-
nA
Full
-
25
-
nA
COM ON Leakage Current,
I
COM(ON)
V
+ = 3.3V, V
COM
= 0.3V, 3V, or V
NO
or V
NC
= 0.3V, 3V,
or Floating
25
-
1.7
-
nA
Full
-
48
-
nA
DYNAMIC CHARACTERISTICS
Turn-ON Time, t
ON
V+ = 2.7V, V
NO
or V
NC
= 1.5V, R
L
= 50
, C
L
= 35pF,
(See Figure 1, Note 8)
25
-
25
35
ns
Full
-
-
40
ns
Turn-OFF Time, t
OFF
V+ = 2.7V, V
NO
or V
NC
= 1.5V, R
L
= 50
, C
L
= 35pF,
(See Figure 1, Note 8)
25
-
20
30
ns
Full
-
-
35
ns
Break-Before-Make Time Delay, t
D
V+ = 3.3V, V
NO
or V
NC
= 1.5V, R
L
= 50
, C
L
= 35pF,
(See Figure 3, Note 8)
Full
2
6
-
ns
Electrical Specifications - 4.3V Supply
Test Conditions: V+ = +3.9V to +4.5V, GND = 0V, V
INH
= 1.6V, V
INL
= 0.5V (Notes 4, 6),
Unless Otherwise Specified
(Continued)
PARAMETER
TEST CONDITIONS
TEMP
(C)
(NOTE 5)
MIN
TYP
(NOTE 5)
MAX
UNITS
ISL8484
5
FN6128.0
February 25, 2005
Charge Injection, Q
C
L
= 1.0nF, V
G
= 0V, R
G
= 0
, (See Figure 2)
25
-
95
-
pC
OFF Isolation
R
L
= 50
, C
L
= 5pF, f = 100kHz, V
COM
= 1V
RMS
,
(See Figure 4)
25
-
68
-
dB
Crosstalk (Channel-to-Channel)
R
L
= 50
, C
L
= 5pF, f = 100kHz, V
COM
= 1V
RMS
,
(See Figure 6)
25
-
-95
-
dB
Total Harmonic Distortion
f = 20Hz to 20kHz, V
COM
= 2V
P-P
, R
L
= 600
25
-
0.003
-
%
NO or NC OFF Capacitance, C
OFF
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V, (See Figure 7)
25
-
115
-
pF
COM ON Capacitance, C
COM(ON)
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V, (See Figure 7)
25
-
224
-
pF
POWER SUPPLY CHARACTERISTICS
Positive Supply Current, I+
V+ = +3.6V, V
IN
= 0V or V+
25
-
0.014
-
A
Full
-
0.52
-
A
DIGITAL INPUT CHARACTERISTICS
Input Voltage Low, V
INL
25
-
-
0.5
V
Input Voltage High, V
INH
25
1.4
-
-
V
Input Current, I
INH
, I
INL
V+ = 3.3V, V
IN
= 0V or V+ (Note 8)
Full
-0.5
-
0.5
A
Electrical Specifications - 1.8V Supply
Test Conditions: V+ = +1.65V to +2V, GND = 0V, V
INH
= 1.0V, V
INL
= 0.4V (Note 4, 6),
Unless Otherwise Specified
PARAMETER
TEST CONDITIONS
TEMP
(C)
(NOTE 5)
MIN
TYP
(NOTE 5)
MAX
UNITS
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, V
ANALOG
Full
0
-
V+
V
ON Resistance, R
ON
V+ = 1.65V, I
COM
= 100mA, V
NO
or V
NC
= 0V to V+,
(See Figure 5)
25
-
0.5
0.8
Full
-
-
0.85
DYNAMIC CHARACTERISTICS
Turn-ON Time, t
ON
V+ = 1.65V, V
NO
or V
NC
= 1.0V, R
L
= 50
, C
L
= 35pF,
(See Figure 1, Note 8)
25
-
65
80
ns
Full
-
-
90
ns
Turn-OFF Time, t
OFF
V+ = 1.65V, V
NO
or V
NC
= 1.0V, R
L
= 50
, C
L
= 35pF,
(See Figure 1, Note 8)
25
-
50
70
ns
Full
-
-
80
ns
Break-Before-Make Time Delay, t
D
V+ = 2.0V, V
NO
or V
NC
= 1.0V, R
L
= 50
, C
L
= 35pF,
(See Figure 3, Note 8)
Full
2
9
-
ns
Charge Injection, Q
C
L
= 1.0nF, V
G
= 0V, R
G
= 0
, (See Figure 2)
25
-
49
-
pC
OFF Isolation
R
L
= 50
, C
L
= 5pF, f = 100kHz, V
COM
= 1V
RMS
,
(See Figure 4)
25
-
68
-
dB
Crosstalk (Channel-to-Channel)
R
L
= 50
, C
L
= 5pF, f = 100kHz, V
COM
= 1V
RMS
,
(See Figure 6)
25
-
-95
-
dB
NO or NC OFF Capacitance, C
OFF
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V, (See Figure 7)
25
-
115
-
pF
COM ON Capacitance, C
COM(ON)
f = 1MHz, V
NO
or V
NC
= V
COM
= 0V, (See Figure 7)
25
-
224
-
pF
DIGITAL INPUT CHARACTERISTICS
Input Voltage Low, V
INL
25
-
-
0.4
V
Input Voltage High, V
INH
25
1.0
-
-
V
Input Current, I
INH
, I
INL
V+ = 2.0V, V
IN
= 0V or V+ (Note 8)
Full
-0.5
-
0.5
A
Electrical Specifications - 3V Supply
Test Conditions: V+ = +2.7V to +3.3V, GND = 0V, V
INH
= 1.4V, V
INL
= 0.5V (Notes 4, 6),
Unless Otherwise Specified (Continued)
PARAMETER
TEST CONDITIONS
TEMP
(C)
(NOTE 5)
MIN
TYP
(NOTE 5)
MAX
UNITS
ISL8484
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