Datasheet

© 2007 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSA2271T • Rev. 1.0.6 6
FSA2271T — Low-Voltage, Dual-SPDT (0.4) Analog Switch with Negative Swing Audio Capability
Test Diagrams
Select
nB
n
nA
V
S1,S2
= 0 or V
CC
I
ON
V
ON
R
ON
= V
ON
/ I
ON
GND
V
SW
GND
V
R
L
C
L
nB
n
nA
GND
GND
R
S
V
S1,S2
V
GND
V
OUT
V
SW
R
L
and C
L
are functions of the application
environment (see AC/DC tables).
C
L
includes test ficutre and stray capacitance.
Figure 3. On Resistance
Figure 4. Test Circuit Load
Select
V
S1,S2
= 0 or
V
CC
NC
V
GND
A
I
A(ON)
V
IN
Select
V
S1,S2
= 0 or V
cc
NC
A
I
A(OFF)
V
GND
Each switch port is tested separately.
IN
Figure 5. On Leakage
Figure 6. Off Leakage (Each Port Tested Separately)
V
S1,S2
= 0 or V
cc
nB
n
Capacitance
Meter
nS
n
nB
n
V
S1,S2
= 0 or V
cc
nB
n
Capacitance
Meter
nS
n
nB
n
Figure 7. Off Capacitance
Figure 8. On Capacitance
V
OUT
GND
GND
R
T
GND
GND
V
S
R
S
Network Analyzer
V
S1,S2
GND
R
L
and C
L
are functions of the application
environment (see AC/DC tables).
C
L
includes test fixture and stray capacitance.
V
IN
L
t
RISE
= 2.5ns
GND
V
CC
90% 90%
10%10%
t
FALL
= 2.5ns
V
CC
/2
V
CC
/2
Input - V
S1,S2
Output -V
OUT
90%
V
OH
V
OL
t
ON
t
OFF
90%
Figure 9. Bandwidth
Figure 10. Turn-On / Turn-Off Waveforms