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Agilent 44478B Dual 1x4 RF Multiplexer Module
The Agilent 44478B Multiplexer Module is an ideal choice for broadband switching of high-frequency or fast pulse signals. Dual 1-to-4 multiplexers provide bi-directional switching of signals from DC to 1.3GHz. High-channel isolation (>55 dB at 1 GHz) assures quality dynamic-range measurements using spectrum, network, or distortion analyzers. Each 1-to-4 multiplexer consists of seven relays in a "tree" structure, which provides high isolation and low VSWR (voltage standing wave ratio). All the connectors on the module's edge are female BNC for ease of wiring. Off-channels can be terminated in resistors to maintain proper operation of DUT circuitry. Simply plug a 50/75 Ohm SMB type resistive termination onto the on-board male SMB connector provided for each channel.
Features:
- Insertion loss less than 1.9dB at 1.3GHz
- Switching up to 1A, 24W or 24VA
- Maximum Voltage: 42V, DC+AC peak
- Maximum Scan Rate: 43 Chans/sec
- Maximum Power:
- Per channel: 24W, 24VA or 44dBm, Characteristic Impedance: 75 Ohm
- Maximum Current: 1A
Specifications:
| Input Characteristics |
| Maximum Scan Rate |
43 Chans./sec |
| Maximum Voltage |
42 V, DC + AC peak |
| Maximum Current |
1 A |
Maximum Power
(Per channel) |
24 W, 24 VA or 44 dBm |
| Characteristic Impedance |
75 Ω |
| DC Performance |
| Thermal Offset |
<6 μV (<2 μV, Typ.) |
Initial Closed
Channel Resistance |
<1 Ω |
Insulation Resistance
(between terminals)<(25 °C, 40% RH) |
>1010 Ω |
| Capacitance |
| Center-Center |
<0.006 pF |
| Center-Shield |
<60 pF |
| Rise Time |
<300 psec |
| Signal Delay |
<3 nsec |
| AC Performance |
Insertion Loss
≤(40 °C, 95% RH) |
10 MHz |
<0.3 dB |
| 100 MHz |
<0.7 dB |
| 500 MHz |
<1.5 dB |
| 1.3 GHz |
<3.0 dB |
| ≤(25 °C, 40% RH) |
10 MHz |
<0.2 dB |
| 100 MHz |
<0.5 dB |
| 500 MHz |
<1.1 dB |
| 1.3 GHz |
<1.9 dB |
Crosstalk
Channel-Channel, Channel-Common |
10 MHz |
<-90 dB |
| 100 MHz |
<-80 dB |
| 500 MHz |
<-65 dB |
| 1.3 GHz |
<-55 dB |
| Group-Group, Module-Module |
10 MHz |
<-90 dB |
| 100 MHz |
<-80 dB |
| 500 MHz |
<-70 dB |
| 1.3 GHz |
<-60 dB |
| VSWR |
10 MHz |
<1.20 |
| 100 MHz |
<1.25 |
| 500 MHz |
<1.35 |
| 1.3 GHz |
<1.55 |
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