Datasheet


W   
   
SCDS180 − FEBRUARY 2005
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12
NC
COM
V
NC
V
COM
Channel OFF: NC to COM
Network Analyzer Setup
Source Voltage = 1 V
RMS
DC Bias = 350 mV
V
+
GND
50 W
50 W
Network Analyzer
Source
Signal
IN
V
I
+
V
I
= V
+
or GND
Figure 19. OFF Isolation (O
ISO
)
V
+
GND
NC
IN
R
GEN
V
I
COM V
COM
C
L
(1)
OFF
V
COM
ON OFF
∆V
COM
V
GEN
+
V
I
= V
IH
or V
IL
C
L
= 1 nF
V
GEN
= 0 to V
+
R
GEN
= 0
Q
C
= C
L
× ∆V
COM
Logic
Input
(2)
V
IH
V
IL
Logic
Input
(V
I)
(1)
C
L
includes probe and jig capacitance.
(2)
All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z
O
= 50 Ω, t
r
< 5 ns, t
f
< 5 ns.
Figure 20. Charge Injection (Q
C
)
V
+
/2
GND
NC
COM
C
L
(1)
IN
V
I
600 W
600 W
Audio Analyzer
Source
Signal
R
L
= 600 Ω
C
L
= 50 pF
V
SOURCE
= V
+
P-P f
SOURCE
= 20 Hz to 20 kHz
Channel ON: COM to NC
V
I
= V
+
/2 or −V
+
/2
−V
+
/2
LP Filter = 80 kHz HP Filter = 10 Hz
(1)
C
L
includes probe and jig capacitance.
Figure 21. Total Harmonic Distortion (THD)