Test Circuits
V1
S
D
VS
RON = V1/IDS
IDS
Test Circuit 1. On Resistance
IS (OFF)
S
A
VS
D
ID (OFF)
A
VD
Test Circuit 2. Off Leakage
ADG751
S
D
NC
NC = NO CONNECT
ID (ON)
A
VD
Test Circuit 3. On Leakage
VDD
0.1F
VDD
VIN
50%
50%
S
D
VOUT
VS
IN
RL
300⍀
CL
35pF
VS
GND
VOUT
90%
90%
t OFF
t ON
Test Circuit 4. Switching Times
RS
VS
VDD
VDD
S
D
IN
GND
CL
1.0nF
VOUT
VIN
ON
VOUT
OFF
QINJ = CL ؋ ⌬VOUT
⌬VOUT
Test Circuit 5. Charge Injection
VDD
0.1F
NETWORK
ANALYZER
50⍀
VS
50⍀
IN
VIN
VDD
S
D
NETWORK
ANALYZER
RL VOUT
50⍀
GND
OFF
ISOLATION
=
20
LOG
VOUT
VS
Test Circuit 6. Off Isolation
NETWORK
ANALYZER
50⍀
VS
VDD
0.1F
VDD
S
D
IN
NETWORK
ANALYZER
RL VOUT
50⍀
VIN
GND
INSERTION LOSS = 20 LOG VOUT WITH SWITCH
VOUT WITHOUT SWITCH
Test Circuit 7. Bandwidth
REV. A
–9–