Maxim’s new MAX12005 is said to be the industry's first 8 x 4 satellite IF switch IC that is expandable to allow up to 16 satellite signals (the part’s 8 x 4 matrix is configured with an additional IF switch input so it can accept 16 signals).
The MAX12005 supports a single, quad low-noise block (LNB) with vertical or horizontal polarization signals that can be matrix-switched to four satellite receivers. A configuration of eight satellite IF inputs to eight satellite receivers is also possible by using two MAX12005 ICs and adding eight input splitters.
Four integrated 9:1 multiplexers with variable-gain input and output amplifiers provide sufficient gain to compensate for the signal-path losses in the cable distribution and for switch insertion losses.To save space and cost, the MAX12005 utilizes two control methods: DiSEqC 2.0 decoding and tone/voltage decoding; four embedded DiSEqC decoders eliminate the need for external control components.
Four integrated 9:1 multiplexers with variable-gain input and output amplifiers provide sufficient gain to compensate for the signal-path losses in the cable distribution and for switch insertion losses.To save space and cost, the MAX12005 utilizes two control methods: DiSEqC 2.0 decoding and tone/voltage decoding; four embedded DiSEqC decoders eliminate the need for external control components.
These control methods enable four operational modes, which include LNB mode cascade master mode, cascade slave mode, and single mode.
The MAX12005MAX12005 is specified over the -40°C to +85°C extended temperature range. It is available in a 7mm x 7mm, lead-free, 48-pin TQFN package. Prices start at $7.44 (1000-up, FOB USA).