6. Frequently Asked Questions
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A: It is used as a cable-TV broadband amplifier (line extender) in CATV distribution networks. Specifically, it amplifies RF signals in the 40–550 MHz range for trunk/feeder lines. Typical applications are cable headends, distribution nodes, or cascade amplifiers in analog/digital CATV systems.
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A: The BGY588C provides ~34 dB gain (flat within ±0.5 dB), 8 dB noise figure, and operates at 24 V with ~0.33 A supply current. It supports outputs up to +44 dBmV with CTB ~–57 dB and CSO ~–62 dB (77 channels). Impedance is 75 Ω in/out with ≥16 dB return loss across most of the band.
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A: It is in NXP’s SOT-115J (SFM7) package – a rectangular metal can with an aluminum flange and two mounting holes. The flange must be bolted to a heatsink or metal chassis for thermal and mechanical support. The 7 leads are in-line on one side (RF in, out, DC power, grounds). Lead-soldering or a compatible socket is used for electrical connections.
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A: No. NXP has discontinued the BGY588C. It is only available as existing stock (new-old-stock or via third-party sellers). Design teams should plan for sourcing issues or select alternative components.
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A: Because BGY588C is obsolete, alternatives include other NXP CATV amplifiers or similar modules. For example, NXP’s BGE788C offers ~34 dB gain up to 750 MHz, and other BGY models (e.g. BGY585A, BGY587) cover 550 MHz with different gain levels. Modern RF amplifier ICs (GaAs or GaN) from other vendors might also be used with matching networks. Any replacement must handle the required bandwidth (40–550 MHz) and gain with proper biasing.
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A: Verify authenticity and condition of stock. Common issues include counterfeit parts or mislabeled dies. Check that markings match NXP data. Because it’s ESD-sensitive, require static-safe handling from the supplier. Confirm that the part is the correct revision (C version) and not a similar-numbered variant. Request traceable lot or test results if available.