FSA4157 • FSA4157A Low Voltage 1
Ω
SPDT Analog Switch
August 2003
Revised January 2005
FSA4157 • FSA4157A
Low Voltage 1
Ω
SPDT Analog Switch
General Description
FSA4157 and FSA4157A are high performance Single
Pole/Double Throw (SPDT) analog switches. Both devices
feature ultra low R
ON
of 1.15
Ω
maximum at 4.5V V
CC
and
will operate over the wide V
CC
range of 1.65V to 5.5V for
FSA4157, and 2.7V to 5.5V for FSA4157A. The device is
fabricated with sub-micron CMOS technology to achieve
fast switching speeds and is designed for break-before-
make operation. The select input is TTL level compatible.
The FSA4157A features very low quiescent current even
when the control voltage is lower than the V
CC
supply. This
feature services the mobile handset applications very well
allowing for the direct interface with baseband processor
general purpose I/Os.
Features
s
FSA4157A features lower I
CC
when the S input is lower
than V
CC
s
Maximum 1.15
Ω
On Resistance (R
ON
) at 4.5V V
CC
s
0.3
Ω
max R
ON
flatness at 4.5V V
CC
s
Space saving 6-lead Pb-Free MicroPak
and
SC70 6-lead surface mount packages
s
Broad V
CC
operating range:
• FSA4157: 1.65V to 5.5V
• FSA4157A: 2.7V to 5.5V
s
Fast turn-on and turn-off time
s
Break-before-make enable circuitry
s
Over-voltage tolerant TTL compatible control circuitry
Ordering Code:
Order Number
FSA4157P6
FSA4157P6X
FSA4157P6X_NL
(Note 1)
FSA4157L6X
FSA4157AP6
FSA4157AP6X
FSA4157AP6X_NL
(Note 1)
FSA4157AL6X
Package
Number
MAA06A
MAA06A
MAA06A
MAC06A
MAA06A
MAA06A
MAA06A
MAC06A
Product Code
Top Mark
A57
A57
A57
EG
B57
B57
B57
EU
Package Description
Supplied As
6-Lead SC70, EIAJ SC88, 1.25mm Wide 250 Units on Tape and Reel
6-Lead SC70, EIAJ SC88, 1.25mm Wide 3k Units on Tape and Reel
Pb-Free 6-Lead SC70, EIAJ SC88,
1.25mm Wide
3k Units on Tape and Reel
Pb-Free 6-Lead MicroPak, 1.0mm Wide 5k Units on Tape and Reel
6-Lead SC70, EIAJ SC88, 1.25mm Wide 250 Units on Tape and Reel
6-Lead SC70, EIAJ SC88, 1.25mm Wide 3k Units on Tape and Reel
Pb-Free 6-Lead SC70, EIAJ SC88,
1.25mm Wide
3k Units on Tape and Reel
Pb-Free 6-Lead MicroPak, 1.0mm Wide 5k Units on Tape and Reel
Pb-Free package per JEDEC J-STD-020B.
Note 1:
“_NL” indicates lead-free package (per JEDEC J-STD-020B). Device available in Tape and Reel only.
MicroPak is a trademark of Fairchild Semiconductor Corporation.
© 2005 Fairchild Semiconductor Corporation
DS500841
www.fairchildsemi.com
FSA4157 • FSA4157A
Absolute Maximum Ratings
(Note 2)
Supply Voltage (V
CC
)
DC Switch Voltage (Note 3)
DC Input Voltage (V
IN
) (Note 3)
DC Input Diode Current
Switch Current
Peak Switch Current
(Pulse at 1 mS duration,
−
0.5V to
+
6.0V
−
0.5V to V
CC
+
0.5V
−
0.5V to
+
6.0V
−
50 mA
200 mA
Recommended Operating
Conditions
(Note 4)
Supply Voltage (V
CC
)
FSA4157
FSA4157A
Control Input Voltage
Switch Input Voltage
Operating Temperature
1.65V to 5.5V
2.7V to 5.5V
0V to V
CC
0V to V
CC
−
40
°
C to 85
°
C
350
°
C/W
330
°
C/W (estimated)
<
10% Duty Cycle)
Power Dissipation (P
D
) @ 85
°
C
SC70 6L Package
MicroPak 6L Package
Storage Temperature Range (T
STG
)
Maximum Junction Temperature (T
J
)
Lead Temperature (T
L
)
(Soldering, 10 seconds)
ESD (Human Body Model)
FSA4157A
400 mA
180 mW
180 mW
Thermal Resistance
θ
JA
in still air
SC70 6L Package
MicroPak 6L Package
−
65
°
C to
+
150
°
C
+
150
°
C
+
260
°
C
7500V
Note 2:
The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum rating.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
Note 3:
The input and output negative ratings may be exceeded if the input
and output diode current ratings are observed.
Note 4:
Control input must be held HIGH or LOW and it must not float.
DC Electrical Characteristics
(all typical values are at 25
°
C unless otherwise specified)
Symbol
V
IH
V
IL
Parameter
Input Voltage High
Input Voltage Low
V
CC
(V)
2.7 to 3.6
4.5 to 5.5
2.7 to 3.6
2.7 to 3.6
4.5 to 5.5
I
IN
I
NO(OFF)
,
I
NC(OFF)
I
A(ON)
R
ON
∆R
ON
Control Input Leakage
OFF Leakage Current of
Port B
0
and B
1
ON Leakage Current of
Port A
Switch ON Resistance
(Note 5)
On Resistance Matching
Between Channels (Note 6)
R
FLAT(ON)
On Resistance Flatness
(Note 7)
4.5
I
CC
∆I
CC
Quiescent Supply Current
Increase in I
CC
per Input
3.6
5.5
4.3
0.2
0.1
0.1
0.2
0.3
0.5
0.5
0.4
1.0
1.0
10.0
µA
µA
2.7 to 3.6
4.5 to 5.5
5.5
5.5
2.7
4.5
4.5
2.7
−2.0
−4.0
2.6
0.95
0.06
1.4
Ω
2.0
4.0
4.0
1.15
0.12
−1.0
−1.0
−20.0
−40.0
Min
T
A
= +25 °C
Typ
Max
T
A
= −40°C
to
+85°C
Min
2.0
2.4
0.4
0.6
0.8
1.0
1.0
20.0
40.0
4.3
1.3
0.15
µA
nA
nA
Ω
Ω
V
IN
=
0V to V
CC
A
=
1V, 4.5V
B
0
or B
1
=
4.5V, 1V
A
=
1V, 4.5V
B
0
or B
1
=
1V, 4.5V or Floating
I
OUT
=
100mA, B
0
or B
1
=
1.5V
I
OUT
=
100mA, B
0
or B
1
=
3.5V
I
OUT
=
100mA, B
0
or B
1
=
1.5V
I
OUT
=
100mA,
B
0
or B
1
=
0V, 0.75V,1.5V
I
OUT
=
100mA, B
0
or B
1
=
0V, 1V, 2V
V
IN
=
0V or V
CC
, I
OUT
=
0V
V
IN
=
0V or V
CC
, I
OUT
=
0V
One Input at 2.7V,
others at V
CC
or GND
(FSA4157A only)
V
Max
Units
V
(FSA4157A Only)
Conditions
Note 5:
Measured by the voltage drop between A and B pins at the indicated current through the switch. On Resistance is determined by the lower of the
voltage on the two (A or B Ports).
Note 6:
∆R
ON
=
R
ON max
−
R
ON min
measured at identical V
CC
, temperature and voltage.
Note 7:
Flatness is defined as the difference between the maximum and minimum value of On Resistance over the specified range of conditions.
3
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