Datasheet

© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
FSA801 • Rev. 1.0.3 9
FSA801 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability
Test Diagrams
Select
nB
n
nA
V
Sel
= 0 or V
cc
I
ON
V
ON
R
ON
= V
ON
/I
ON
GND
V
IN
GND
V
IN
Select
V
Sel
= 0 orV
cc
NC
A
I
A(OFF)
V
IN
GND
**Each switch port is tested separately.
V
IN
Figure 6. On Resistance Figure 7. Off Leakage
V
OUT
GND
GND
R
T
GND
GND
V
S
R
S
Network Analyzer
R
T
GND
R
S
and R
T
are functions of the application
environment (see AC/DC tables).
V
Sel
GND
Off-Isolation = 20 Log (V
OUT
/V
IN
)-
V
OUT
GND
GND
R
T
GND
GND
V
S
R
S
Network Analyzer
R
T
GND
R
S
and R
T
are functions of the application
environment (see AC tables for values).
V
S1, S2, S3
GND
CROSSTALK = 20 Log (V
O
U
V
IN
NC
Figure 8. Channel Off Isolation Figure 9. Active Channel Crosstalk
R
S
V
OUT
Q = ΔV
OUT
• C
L
ΔV
OUT
V
OUT
V
CC
0V
Input – V
SEL
Generator
GND
V
S
C
L
V
SEL
V
IN
B
nS
n
GND
C
L
includes test fixture and stray capacitance
GND
Off On Off
mA
Figure 10. Charge Injection Test