Agilent Technologies 34970A, Service Manual, Page: 24 / 273

Module Specifications
34905A, 34906A
RF Multiplexer
General 34905A 34906A
Number of Channels Dual 1x4
50
Ω
Dual 1x4
75
Ω
Open/Close Speed 60/s
Maximum Input
Voltage (dc, ac rms) 42 V
Current (dc, ac rms) 0.7 A
Power (W, VA) 20 W
DC Characteristics
Offset Voltage
[1]
< 6 µ V
Initial Closed Channel R
[1]
< 0.5 Ω
Isolation (ch-ch, ch-earth)
> 1 G Ω
Other
Switch Life No Load (typical) 5M
Switch Life Rated Load (typical)
[2]
100k
Temperature Operating
0 ° C to 55 ° C
Temperature Storage
-20 ° C to 70 ° C
Humidity (non-condensing)
40 ° C / 80% R.H.
AC Characteristics 34905A 34906A
Bandwidth
[3]
2 GHz 2 GHz
Insertion Loss (dB) 10
MHz
-0.1 -0.1
100
MHz
-0.4 -0.4
500 MHz -0.6 -0.5
1 GHz -1.0 -1.0
1.5 GHz -1.2 -1.5
2 GHz -3.0 -2.0
SWR 10 MHz 1.02 1.02
100
MHz
1.05 1.05
500 MHz 1.20 1.25
1 GHz 1.20 1.40
1.5 GHz 1.30 1.40
2 GHz 1.40 2.00
Ch-Ch Cross Talk (dB)
[4]
10 MHz -100 -85
100
MHz
-85 -75
500 MHz -65 -65
1 GHz -55 -50
1.5 GHz -45 -40
2 GHz -35 -35
Risetime < 300 ps
Signal Delay < 3 ns
Capacitance HI to
LO
< 20 pF
Volt-Hertz Limit 10
10
The ac performance graphs are shown on the following page.
Chapter 1 Specifications
Module Specifications
22