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CWB308 Datasheet(PDF) 6 Page - Calogic, LLC

Part No. CWB308
Description  CMOS/DMOS Quad Monolithic SPST Wide Band Analog Switches
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Maker  CALOGIC [Calogic, LLC]
Homepage  http://www.calogic.net
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CWB308 Datasheet(HTML) 6 Page - Calogic, LLC

   
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CWB308 / CWB309
CORPORATION
T = +25 C
A
o
f - Frequency (MHz)
TOTAL HARMONIC DISTORTION
-VS-
FREQUENCY
0.80
0.50
0.20
0.10
0.05
10
20
40
V-, V+ = _
V-, V+ = _
+15V Vanalog = 1.0Vrms
V-, V+ = _
+15V Vanalog = 0.3Vrms
+10V Vanalog = 1.0Vrms
DISTORTION -VS- FREQUENCY
POWER SUPPLY REJECTION RATIO POWER SUPPLY DECOUPLING CIRCUIT
IL
V+
LT
V-
S
D
IN
.22 F
µ
1K
1K
.22 F
µ
POWER SUPPLY REJECTION RATIO
-VS-
FREQUENCY
f - Frequency (MHz)
90
80
70
60
50
40
30
0.1
0.2
0.5
1.0
10.0
20
-PSRR
+PSRR
w/o Decoupling
-PSRR, +PSRR with Decoupling
MOD
V- = 15V, V+ = +15V
T = +25 C
A
o
V
= 4.0V -f-p
2.0
5.0
CWB309CP
50
D
S
C
V+
C
V-
LOGIC 1 = +5V
µ
C = 0.22 F // 10 F
50
µ
HP
SPECTRUM
ANALYSER
(or equivalent)
HARMONIC DISTORTION
10MHz - 40MHz
HP
GENERATOR
(or equivalent)
DISTORTION
-VS-
ANALOG INPUT VOLTAGE
10.0
1.0
0.3
0.1
0.05
0.02
0.3
1.0
3.0
5.0
Vanalog - Analog Input (Vrms)
Compensated
Total Harmonic
T = +25 C
A
o
V- = -15V, V+ = +15V
f = 10KHz, R = 50
L
5.0
2.0
By inserting 1K ohm resistors in series with V+ and V-
power supply lines and decoupling both pins at the device
socket, it is possible to improve power supply rejection
ratios of a video switch by 50dB at frequencies of 20MHz
and higher.


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