Integrated Device Technology (IDT) introduced a new single pole, double throw (SPDT) absorptive RF switch optimized for the latest cable networking standard. The IDT® F2970 is a broadband, high linearity, 75 Ω switch that supports the DOCSIS (Data Over Cable Service Interface Specification) 3.1 standard and can be used from the headend to fiber nodes and distribution amplifiers.
Covering 5 MHz to 3 GHz, the F2970 is compatible with both the upstream and downstream signal chains in a CATV network. It achieves a composite triple beat (CTB) and composite second order (CSO) of −90 dBc with 77 and 110 channels and an output power of 44 dBmV. At 1200 MHz, insertion loss is 0.32 dB and isolation is 68 dB.
The F2970 is biased with a single positive supply voltage and supports 3.3 V logic. The operating temperature range is −40°C to 105°C. The switch is packaged in a 4 mm x 4 mm 20L QFN package.
Samples and volume production devices are available and priced at 93 cents for the switch (1,000 quantity) and $125 for an evaluation board.
Duncan Pilgrim, general manager of IDT's RF division said, "The device offers a leading combination of low insertion loss and high isolation, minimizing path loss while preventing cross talk and signal degradation."