NXP Semiconductors BGD814,112

Overview

BGD814,112 from NXP Semiconductors is a hybrid RF power doubler amplifier module designed for CATV distribution systems, delivering 20.5–21.5 dB small-signal gain at 870 MHz, 24 V DC supply operation, and 380–410 mA total current draw. It operates across 40–870 MHz with 75 Ω input/output impedance and targets high-linearity downstream amplification in cable headends and node stations.

For engineers reviewing the BGD814,112 datasheet, BGD814,112 pinout, BGD814,112 application, or BGD814,112 equivalent, key selection criteria include composite triple beat (CTB) performance down to −66 dB (79-channel flat), output voltage capability up to 64 dBmV, noise figure ≤7.5 dB at 870 MHz, and rugged SOT115J package with gold metallization and silicon nitride passivation.

Technical Context

The BGD814,112 implements a broadband hybrid amplifier architecture optimized for 75 Ω CATV signal paths, featuring internally matched input and output stages with return loss ≥15 dB across 45–870 MHz. Its gain flatness is controlled within ±0.25 dB (100 MHz), ±0.5 dB (100–800 MHz), and −0.4 to +0.1 dB (800–870 MHz), enabling stable multi-channel amplification without external equalization.

It operates exclusively at 24 V DC with transient tolerance up to 35 V, draws 395 mA typical current, and maintains distortion performance under tilted channel loading-e.g., CTB = −60.5 dB (112 ch, 745.25 MHz) and CSO = −61 dB (112 ch, 746.5 MHz)-making it suitable for dense spectral occupancy in modern DOCSIS-compliant networks.

Key Specifications

Pinout & Package

Package: SOT115J - rectangular single-ended hybrid module with aluminium flange, 7 gold-plated in-line leads, 2 vertical 6-32 UNC mounting holes, and silicon nitride passivation for environmental robustness.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RF power doubler amplifier applications.

Compared with MAX2109ETX+ and QPL9057, the BGD814,112 uniquely combines 24 V operation, 75 Ω native impedance, flange-mounted thermal management, and −66 dB CTB performance - making it irreplaceable in legacy and high-power CATV infrastructure where mechanical robustness and system-level impedance alignment are mandatory.

Availability

BGD814,112 is available at Aetrix Electronics and suitable for cable headend amplifiers, HFC node line extenders, trunk repeaters, and DOCSIS 3.1 spectrum extension modules requiring stable component supply and long-lifecycle support.

Supply support for BGD814,112 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global leader in high-performance RF, analog, and mixed-signal solutions, with deep expertise in broadband communications and automotive-grade reliability.

The BGD814,112 belongs to NXP's legacy CATV hybrid amplifier product line, engineered specifically for high-linearity, high-output RF amplification in 75 Ω cable television infrastructure with emphasis on thermal stability and long-term field reliability.

FAQ

What is the maximum supply voltage the BGD814,112 can withstand?

The BGD814,112 is rated for continuous operation at 24 V DC but can withstand supply transients up to 35 V, as confirmed in the datasheet Note 6. This transient tolerance allows safe integration into CATV power supplies with unregulated surges, provided average dissipation remains within thermal limits at the mounting base.

Does the BGD814,112 require external biasing or matching components?

No, the BGD814,112 is a fully matched hybrid module with internal DC blocking and impedance transformation. It operates directly with 75 Ω input and output terminations and requires only a 24 V DC supply, local decoupling capacitors (10 µF + 100 nF), and proper RF grounding via pins 2, 3, 7, and 8 - no external bias tees or matching networks are needed for standard CATV use.

What is the thermal derating behavior of the BGD814,112 above 35 °C mounting base temperature?

The BGD814,112 specifies an operating mounting base temperature range of −20 to +100 °C. While the datasheet does not provide explicit derating curves, total current consumption remains stable (380–410 mA) across this range, and distortion performance (e.g., CTB, CSO) is characterized at Tmb = 35 °C. For reliable operation above 35 °C, forced-air cooling or heatsink contact is recommended to maintain Tmb ≤ 85 °C per industry practice.

Can the BGD814,112 be used in 50 Ω test equipment applications?

The BGD814,112 is optimized for 75 Ω CATV systems and exhibits degraded return loss (<12 dB) and gain flatness when operated into 50 Ω loads. Its s11 and s22 parameters are specified only for ZS = ZL = 75 Ω. Using it in 50 Ω systems introduces mismatch loss and potential instability; dedicated 50 Ω amplifiers like the QPL9057 are preferred for lab instrumentation.

How does the BGD814,112 perform under tilted channel loading conditions?

The BGD814,112 maintains robust linearity under tilt: CTB = −60.5 dB (112 ch, 745.25 MHz, 10.3 dB tilt) and −56 dB (132 ch, 859.25 MHz, 10.2 dB tilt). These values confirm its suitability for real-world cable plant with non-flat frequency response, where conventional amplifiers often degrade due to gain slope-induced intermodulation.