Datasheet
© 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSA1259 / FSA1259A Rev. 1.0.6 6
FSA1259 / FSA1259A — Low-Voltage, 1Ω SPST Analog Switch with Power-Off Isolation
AC Electrical Characteristics
All typical values are at V
CC
=1.8V, 2.5V, 3.0V, 5.0V at 25°C unless otherwise specified.
T
A
=+25ºC
T
A
=-
40to+85ºC
Symbol Parameter V
CC
(V) Conditions
Min. Typ. Max. Min. Max.
Unit Figure
4.50 to 5.50 1.0 4.0 7.5 1.0 9.0
3.00 to 3.60 1.5 6.0 9.5 1.0 10.0
2.30 to 2.70 2.0 8.0 10.0 1.0 12.0
t
ON
Turn-On Time
1.65 to 1.95
1B or 2B=V
CC
,
R
L
=50Ω,
C
L
=35pF
3.0 14.0 18.0 1.0 20.0
ns Figure 11
4.50 to 5.50 4.5 6.5 11.0 3.5 13.0
3.00 to 3.60 4.5 8.0 11.0 3.0 14.0
2.30 to 2.70 4.5 9.0 12.5 3.0 15.0
Turn-Off Time
(FSA1259)
1.65 to 1.95
1B or 2B=V
CC
,
R
L
=50Ω,
C
L
=35pF
5.0 13.0 15.5 4.0 18.5
ns Figure 11
4.50 to 5.50 4.5 13.0 17.0 3.5 20.0
3.00 to 3.60 4.5 13.5 17.0 3.0 20.0
2.30 to 2.70 4.5 16.0 20.0 3.0 23.0
t
OFF
Turn-Off Time
(FSA1259A)
1.65 to 1.95
1B or 2B=V
CC
,
R
L
=50Ω,
C
L
=35pF
5.0 24.0 33.0 4.0 36.0
ns Figure 11
4.50 to 5.50 15
3.00 to 3.60 11
2.30 to 2.70 8
Q
Charge
Injection
1.65 to 1.95
C
L
=1.0nF,
V
GEN
=0V,
R
GEN
=0Ω
6
pC Figure 13
OIRR Off-Isolation 1.8 to 5.0
f=1MHz,
R
L
=50Ω
-60 dB Figure 12
Xtalk Crosstalk 1.8 to 5.0
f=1MHz,
R
L
=50Ω
-73 dB Figure 12
4.50 to 5.50 240
3.00 to 3.60 240
2.30 to 2.70 240
BW -3db Bandwidth
1.65 to 1.95
R
L
=50Ω
240
MHz Figure 15
1.8 .003 Figure 16
THD
Total Harmonic
Distortion
5.0
R
L
=600Ω,
V
IN
=0.5V
PP
,
f=20Hz to
20kHz
.001
%
Figure 16
Capacitance
T
A
=+25ºC
Symbol Parameter V
CC
(V) Conditions
Min. Typ. Max.
Unit
C
IN
Control Pin Input Capacitance 0
f=1MHz
Figure 14
3 pF
C
OFF
B Port Off Capacitance 1.65 to 5.50
f=1MHz
Figure 14
21
pF
C
ON
A Port On Capacitance 1.65 to 5.50
f=1MHz
Figure 14
47
pF
