5720 Quad-Notch Filter

The UHF Tunable Quad Notch filter is designed with 4 independent lumped element notch filters in series. The design topology for the filter was selected to achieve constant absolute bandwidth over the 225-512MHz
frequency range. Each notch can be programmed to turn on (active mode) or off (bypass mode). Each notch is tunable over a specific frequency range (or tuning zone). The tuning frequency step for each notch is 100KHz (tuning resolution). The filter is equipped with internal temperature compensation that regulates the Temperature Drift of the Notch Frequency and keeps the notch rejection better than 15dB over the entire operating temperature range.

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Specifications
Frequency Range 225 to 512MHz
Notch 1 Frequency Range 225 – 299.9MHz
Notch 2 Frequency Range 300 – 374.9MHz
Notch 3 Frequency Range 375 – 449.9MHz
Notch 4 Frequency Range 450 – 512MHz
Notch Rejection at ±2MHz 15dB min
Passband Insertion Loss (beyond ±24MHz) 3.5dB max *
Insertion Loss at ±10MHz 5dB max *
Impedance (Input/Output) 50 Ω
VSWR 2.5:1
Temperature Range -40°C to +85°C
RF Power Handling +25dBm
IIP3 54dBm
DC Power
       DC Voltage 3.3 VDC ±0.3 VDC
       DC Current Max 45mA
Control Interface SPI Serial Input
Tuning Resolution 100KHz
Switching Speed, 90% RF Power (typical) < 50μsec
Dimensions [L x W x H] 1.70 X 1.80 X 0.35 inches

43.20 X 45.20 X 8.90 mm

Performance

Mechanical

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