FSA1259 / FSA1259A — Low-Voltage, 1Ω Dual SPST Analog Switch with Power-Off Isolation
July 2009
FSA1259 / FSA1259A
Low-Voltage, 1Ω Dual SPST Analog Switch with
Power-Off Isolation
Features
Power-Off Isolation (V
CC
=0V)
1Ω On Resistance (R
ON
) for 4.5V V
CC
0.25Ω Maximum R
ON
Flatness for 4.5V V
CC
Space-Saving, US8 Surface Mount Package
Broad V
CC
Operating Range: 1.65V to 5.50V
Fast Turn-On and Turn-Off Times
Break-Before-Make Enable Circuitry
Description
The FSA1259/FSA1259A is a high-performance, dual,
Single-Pole / Single-Throw (SPST) analog switch. The
device features ultra-low R
ON
of 1Ω at 4.5V V
CC
and
operates over the wide V
CC
range of 1.65V to 5.50V.
The FS1259A allows for reduced input thresholds on
the select pins.
The device is fabricated with sub-micron CMOS
technology to achieve fast switching speeds and is
designed for break-before-make operation.
Applications
Cellular Phone
Portable Media Player
PDA
Ordering Information
Part Number
FSA1259K8X
FSA1259AK8X
Top
Mark
1259
59A
Operating
Temperature
Range
-40°C to +85°C
-40°C to +85°C
Package
8-Lead US8, JEDEC MO-187,
Variation CA, 3.0mm Wide
8-Lead US8, JEDEC MO-187,
Variation CA, 3.0mm Wide
Eco Status
Green
Green
Packing
Method
3000 Units
Tape and Reel
3000 Units
Tape and Reel
For Fairchild’s definition of Eco Status, please visit:
http://www.fairchildsemi.com/company/green/rohs_green.html.
1A
1B
2S
GND
1
2
3
4
8
7
6
5
V
CC
1S
2B
2A
Figure 1.
© 2007 Fairchild Semiconductor Corporation
FSA1259 / FSA1259A Rev. 1.0.6
Analog Symbols
www.fairchildsemi.com
FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation
Pin Assignments
1A
1B
2S
GND
Figure 2.
1
2
3
4
8
7
6
5
Vcc
1S
2B
2A
Pin Assignments (Top View)
Pin Definitions
Pin #
1
2
3
4
5
6
7
8
Name
1A
1B
2S
GND
2A
2B
1S
V
CC
Description
Data Port
Data Port
Control Input
Ground
Data Port
Data Port
Control Input
Supply Voltage
Truth Table
Control Input (S)
LOW
HIGH
Function
Disconnected
A Connected to B
© 2007 Fairchild Semiconductor Corporation
FSA1259 / FSA1259A Rev. 1.0.6
www.fairchildsemi.com
2
FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device
reliability. The absolute maximum ratings are stress ratings only.
Symbol
V
CC
V
SW
V
IN
I
IK
I
SW
I
SWPEAK
P
D
T
STG
T
J
T
L
ESD
Supply Voltage
Switch Voltage
Input Voltage
(1)
(1)
Parameter
Min.
-0.5
-0.5
-0.5
Max.
7.0
V
CC
+-0.5
6.5
-50
200
400
3.0
Unit
V
V
V
mA
mA
mA
µW
°C
°C
°C
V
V
V
Input Diode Current
Switch Current (Continuous)
Peak Switch Current (Pulsed at 1ms Duration,
<10% Duty Cycle)
Power Dissipation at 85°C
Storage Temperature Range
Maximum Junction Temperature
Lead Temperature (Soldering, 10 seconds)
Human Body Model (JEDEC: JESD22-A114)
Charged Device Model (JEDEC: JESD22-C101)
Machine Model (JEDEC: JESD22-A115)
-65
+150
+150
+260
8000
2000
350
Note:
1. The input and output negative ratings may be exceeded if the input and output diode current ratings are observed.
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
V
CC
A
SEL
V
SW
T
A
θ
JA
Supply Voltage
Parameter
Control Input Voltage
Switch Input Voltage
Operating Temperature
Thermal Resistance, Still Air
(2)
Min.
1.65
0
0
-40
Max.
5.50
V
CC
V
CC
+85
215
Unit
V
V
V
°C
°C/W
Note:
2. Control Input must be held HIGH or LOW; it must not float.
© 2007 Fairchild Semiconductor Corporation
FSA1259 / FSA1259A Rev. 1.0.6
www.fairchildsemi.com
3
FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation
Electrical Characteristics
All typical values are at 25°C unless otherwise specified.
Symbol
Parameter
V
CC
(V)
4.50 to 5.50
Input Voltage High
(FSA1259)
V
IH
Input Voltage High
(FSA1259A)
3.00 to 3.60
2.30 to 2.70
1.65 to 1.95
4.50 to 5.50
3.00 to 3.60
2.30 to 2.70
1.65 to 1.95
4.50 to 5.50
Input Voltage Low
(FSA1259)
V
IL
Input Voltage Low
(FSA1259A)
3.00 to 3.60
2.30 to 2.70
1.65 to 1.95
4.50 to 5.50
3.00 to 3.60
2.30 to 2.70
1.65 to 1.95
5.50
I
IN
Control Input
Leakage
3.60
2.70
1.95
5.50
3.60
2.70
1.95
5.50
On-Leakage
Current of
Port B
3.60
2.70
1.95
5.50
On-Leakage
Current of
Port A
3.60
2.70
1.95
Power Off
Leakage Current
of Port A & Port B
V
IN
=0 or V
CC
V
IN
=0 or V
CC
V
IN
=0 or V
CC
V
IN
=0 or V
CC
A=1V, B=4.5V or
B=4.5, A=1V
A=1V, B=4.5V or
B=4.5, A=1V
A=0.5V, B=2.3V or
B=2.3, A=0.5V
A=0.3V, B=1.65V or
B=1.65, A=0.3V
A=Floating; B=4.5V, 1V
A=Floating; B=3.0V, 1V
A=Floating; B=2.3V, 0.5V
A=Floating; B=1.65V, 0.3V
A=1V, 4.5V; B=Floating
A=1V, 3.0V; B=Floating
A=0.5V, 2.3; B=Floating
A=0.3V, 1.65V; B=Floating
-10
-2
-2
-2
-10
-5
-5
-5
-5
-2
-2
-2
-5
-2
-2
-2
10
2
2
2
10
5
5
5
-50
-20
-20
-20
-50
-50
-50
-50
-50
-20
-20
-20
-50
-20
-20
-20
Conditions
T
A
=+25°C
Min.
Typ.
Max.
T
A
=-40 to +85°C
Min.
2.4
2.0
1.8
1.5
1.0
1.0
0.95
0.95
0.8
0.8
0.6
0.6
0.75
0.65
0.55
0.5
50
20
20
20
50
50
Max.
Unit
V
V
nA
I
NO(0FF)
Off-Leakage
Current
nA
50
50
50
20
20
20
50
20
nA
2
2
20
20
nA
5
2
2
2
5
2
I
NO(On)
I
A(ON)
I
OFF
0
A=0 to 5.5V; B=0 to 5.5V
-1
1
-10
10
µA
© 2007 Fairchild Semiconductor Corporation
FSA1259 / FSA1259A Rev. 1.0.6
www.fairchildsemi.com
4
FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation
Electrical Characteristics
(Continued)
All typical values are at 25°C unless otherwise specified.
T
A
=+25°C
Min.
4.50
3.00
R
PEAK
Peak On
Resistance
2.30
1.65
4.50
3.00
2.30
1.65
4.50
On Resistance
Matching
Between
Channels
(4)
3.00
2.30
1.65
4.50
3.00
2.30
1.65
5.50
Quiescent Supply
Current
3.60
2.70
1.95
I
CCT
Increase in I
CC
per
Control Input
(FSA1259A)
4.5 to 5.5
I
OUT
=-100mA,
1B or 2B=0 to V
CC
I
OUT
=-100mA,
1B or 2B=0 to V
CC
I
OUT
=-8mA,
1B or 2B=0 to V
CC
I
OUT
=-2mA,
1B or 2B=0
to V
CC
T
A
=25, 85°C
T
A
=-40°C
Symbol
Parameter
V
CC
(V)
Conditions
T
A
=-40 to
+85°C
Max.
1.0
1.5
2.0
12.0
Unit
Typ.
0.8
1.0
1.5
5.0
20.0
0.70
0.9
1.4
2.0
0.05
0.10
0.15
0.15
0.10
0.1
0.2
1.5
5
1
1
1
25
Min.
Max.
1.2
1.8
2.5
15.0
Ω
I
OUT
=-100mA,
1B or 2B=2.5V
I
OUT
=-100mA,
1B or 2B=2.0V
I
OUT
=-8mA,
1B or 2B=1.8V
I
OUT
=-2mA,
1B or 2B=1.5V
I
OUT
=-100mA,
1B or 2B=2.5V
I
OUT
=-100mA,
1B or 2B=2.0V
I=-8mA,
1B or 2B=1.8V
I
OUT
=-2mA
1B or 2B=1.5V
I
OUT
=-100mA, 1B or
2B=1.0V, 1.5V, 2.5V
I
OUT
=-100mA,
1B or 2B=0.8V, 2.0V
I
OUT
=-8mA,
1B or 2B=0.8V, 1.8V
I
OUT
=-2mA,
1B or 2B=0.6V, 1.5V
V
IN
=0 or V
CC
, I
OUT
=0
V
IN
=0 or V
CC
, I
OUT
=0
V
IN
=0 or V
CC
, I
OUT
=0
V
IN
=0 or V
CC
, I
OUT
=0
Asel=1.8V
0.85
1.3
2.0
2.5
0.10
0.15
0.20
0.40
0.25
0.3
1.0
1.00
1.6
Ω
2.4
3.5
0.10
0.15
Ω
0.20
0.40
0.25
0.3
Ω
1.0
R
ON
Switch On
Resistance
(3)
∆
R
ON
R
FLAT(ON)
On Resistance
Flatness
(5)
50
25
20
15
500
300
250
150
40
µA
nA
I
CC
Notes:
3. On resistance is determined by the voltage drop between the A and B pins at the indicated current through
the switch.
4.
∆R
ON
=R
ON
maximum – R
ON
minimum; measured at identical V
CC
, temperature, and voltage.
5. Flatness is defined as the difference between the maximum and minimum value of on resistance over the
specified range of conditions
.
© 2007 Fairchild Semiconductor Corporation
FSA1259 / FSA1259A Rev. 1.0.6
www.fairchildsemi.com
5
京公网安备 11010802033920号
EEWORLD
