NLAS4684
http://onsemi.com
7
Channel switch control/s test socket is normalized. Off isolation is measured across an off channel. On loss is
the bandwidth of an On switch. V
ISO
, Bandwidth and V
ONL
are independent of the input signal direction.
V
ISO
= Off Channel Isolation = 20 Log for V
IN
at 100 kHz
V
ONL
= On Channel Loss = 20 Log for V
IN
at 100 kHz to 50 MHz
Bandwidth (BW) = the frequency 3 dB below V
ONL
V
CT
= Use V
ISO
setup and test to all other switch analog input/outputs terminated with 50
Output
DUT
Input
50
50 Generator
Reference
Transmitted
Figure 6. Off Channel Isolation/On Channel Loss (BW)/Crosstalk
(On Channel to Off Channel)/V
ONL
50
ǒ
V
OUT
V
IN
Ǔ
ǒ
V
OUT
V
IN
Ǔ
Off
On
Off
V
OUT
V
CC
GND
Output
V
IN
C
L
DUT
Figure 7. Charge Injection: (Q)
V
IN
Open
Output
Figure 8. Total Harmonic Distortion Plus Noise Versus Frequency
0.01
0.1
1
10
1 10 100 1000 10000 100000
FREQUENCY (Hz)
THD (%)
NC1
NO1