NXP Semiconductors CGY888C,112

Overview

CGY888C from NXP Semiconductors is a GaAs MMIC hybrid forward amplifier module in SOT115J package, delivering 34.5–36.5 dB power gain at 870 MHz with 280 mA total current draw at 24 V DC supply, optimized for CATV distribution systems operating from 40 MHz to 870 MHz.

For engineers reviewing the CGY888C datasheet, CGY888C pinout, CGY888C application, or CGY888C equivalent, key selection criteria include flatness (≤0.25 dB), CTB/CSO distortion performance (−65 dBc/−63 dBc over 112 NTSC channels), input/output return loss (>17 dB), and integrated ring wave surge protection for cable infrastructure reliability.

Technical Context

The CGY888C implements a push-pull GaAs HFET architecture enabling unconditionally stable broadband amplification up to 870 MHz. Its thermally optimized aluminum flange package supports mounting base temperatures from −20 °C to +100 °C while maintaining gain compensation over temperature.

Designed for constant-output-level operation, the CGY888C achieves ≤0.25 dB flatness across 45–870 MHz and delivers −72 dB cross-modulation suppression under 112-channel NTSC load at 44 dBmV output level, meeting stringent CATV linearity requirements.

Key Specifications

Pinout & Package

SOT115J is a rectangular single-ended aluminum flange package with 2 vertical and 2 horizontal 6-32 UNC mounting holes, 7 gold-plated in-line leads, and thermal path optimized for chassis conduction cooling.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar GaAs forward amplifier applications.

Compared with CGY888C, CGY889C extends usable bandwidth but increases thermal load and BOM cost, while QPA4425 reduces footprint at the expense of system-level surge resilience and gain flatness-making CGY888C optimal for cost-sensitive, field-deployed CATV trunk amplifiers requiring proven ruggedness.

Availability

CGY888C is available at Aetrix Electronics and suitable for CATV trunk amplifiers, DOCSIS 3.1 node amplifiers, headend signal distribution systems, and legacy broadcast repeaters requiring stable component supply across long product lifecycles.

Supply support for CGY888C 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 semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and communication infrastructure markets.

The CGY888C belongs to NXP's CATV amplifier product line, engineered specifically for high-reliability, high-linearity RF signal distribution in cable television networks operating up to 870 MHz.

FAQ

What is the maximum supply voltage rating for the CGY888C?

The CGY888C has an absolute maximum supply voltage (VB) of 30 V DC, as defined in IEC 60134 limiting values. Operation above 24 V DC is not recommended, as it increases total current beyond 300 mA and risks thermal runaway under sustained 870 MHz load. The CGY888C is characterized and guaranteed for stable performance only at 24 V DC per its published quick reference data and characteristics tables.

Does the CGY888C require external bias sequencing or startup control?

No, the CGY888C does not require external bias sequencing. It operates with a single 24 V DC supply applied to pin 5 (+VB), and draws 280 mA typical current with no turn-on delay or ramp-up timing constraints. The CGY888C is designed for direct connection to regulated 24 V DC rails in CATV amplifier modules, with internal stabilization eliminating need for external gate control or soft-start circuitry.

How is the CGY888C protected against electrostatic discharge during handling?

The CGY888C incorporates on-die ESD protection rated at 2000 V per both Human Body Model (JEDEC JESD22-A114E) and IEC61000-4-2 standards. This integrated hardening allows safe manual handling and PCB placement without additional ESD safeguards-though the datasheet cautions that care must still be taken during transport and handling, as the device remains sensitive to ESD events exceeding its rated threshold.

Can the CGY888C be used in DOCSIS 4.0 systems operating above 870 MHz?

No, the CGY888C is specified and characterized only up to 870 MHz. Its gain rolls off beyond this point, and distortion performance (CTB/CSO) is not guaranteed above 870 MHz. For DOCSIS 4.0 systems requiring operation up to 1.2 GHz, NXP recommends the CGY889C-a pin-compatible variant with extended bandwidth and validated performance to 1 GHz, as documented in its separate product data sheet.

What thermal management is required for continuous operation of the CGY888C?

The CGY888C requires mounting to a thermally conductive chassis via its aluminum flange, with mounting base temperature maintained between −20 °C and +100 °C. At 24 V DC and 280 mA, its power dissipation is ~6.7 W; using the specified SOT115J mechanical outline with two vertical 6-32 UNC screws ensures junction-to-chassis thermal resistance remains below 1.2 °C/W, enabling full-power operation without derating when ambient is ≤85 °C.