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NXP Semiconductors CGD985HCI,112
- Part No.:
- CGD985HCI,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Video Amps and Modules
- Package:
- SOT-115J
- Datasheet:
-
CGD985HCI,112.pdf
- Description:
- IC AMP CATV SOT115J
- Quantity:
- Payment:
- Shipping:
Inventory:3,195
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Product details
Overview
CGD985HCI from NXP Semiconductors is a GaAs-based hybrid RF power amplifier module designed for CATV line amplification, delivering 24.4 dB typical power gain across 40–1003 MHz at 24 V DC supply, with 440–460 mA total current draw and 75 Ω input/output impedance. It supports 98 PAL D or 112 NTSC channel loading in broadband cable distribution systems.
For engineers reviewing the CGD985HCI datasheet, CGD985HCI pinout, CGD985HCI application, or CGD985HCI equivalent, key selection criteria include flat frequency response (≤1 dB flatness), −66 dBc typical CTB at 862 MHz, integrated ring wave surge protection, and SOT115J flanged metal package thermal performance for high-reliability headend and node deployments.
Technical Context
This hybrid amplifier employs HFET GaAs die in a thermally optimized, unconditionally stable architecture with gain compensation over temperature and integrated ESD protection (2000 V HBM). Its design targets flat output voltage (Vo) up to 862 MHz under PAL D loading and up to 750 MHz under NTSC loading.
The module operates with 75 Ω source and load impedances, exhibits ≥16 dB return loss across 40–1003 MHz, and maintains ≤2 dB slope straight-line deviation over full bandwidth-enabling cascadeable multi-stage amplification without external equalization in standard CATV plant designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 40 MHz to 1003 MHz - supports full CATV spectrum including digital extensions beyond 862 MHz |
| Power Gain | 24.4 dB typ. at 1003 MHz - enables single-stage amplification of 75+ digital channels with margin |
| CTB Distortion | −66 dBc typ. at 862 MHz (48 dBmV output) - meets stringent multi-channel PAL D linearity requirements |
| Total Current | 440–460 mA at 24 V DC - defines thermal dissipation budget and power supply sizing |
| Input/Output Impedance | 75 Ω - ensures direct interface with coaxial CATV infrastructure without matching networks |
| Return Loss | ≥16 dB (input/output, 870–1003 MHz) - minimizes signal reflections in cascaded amplifier chains |
| Noise Figure | 5.0 dB typ. at 1003 MHz - preserves carrier-to-noise ratio in upstream-sensitive nodes |
Pinout & Package
SOT115J is a rectangular single-ended metal-flange package with aluminum construction, 2 vertical and 2 horizontal 6-32 UNC mounting holes, and 7 gold-plated in-line leads. Designed for heatsink mounting and high-power RF reliability in outdoor and headend environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RF Input | 75 Ω matched input port; connects directly to preceding stage or splitter output |
| 2, 3 | DC Ground / RF Common | Low-inductance ground return path for bias and RF; must be solidly connected to heatsink |
| 5 | +VB Supply | 24 V DC power input; requires local 10 µF low-ESR decoupling near pin |
| 7, 8 | DC Ground / RF Common | Secondary ground terminals; ensure symmetric grounding to minimize ground loop distortion |
| 9 | RF Output | 75 Ω matched output port; drives downstream coax, diplexers, or next amplifier stage |
Key Features
| Feature | Design Value |
|---|---|
| Flat Frequency Response | ≤1 dB deviation (40–1003 MHz) - eliminates need for external tilt compensation in standard plant builds |
| Integrated Surge Protection | Ring wave compliant - protects against induced lightning transients on coaxial feed lines without external suppressors |
| Unconditional Stability | No external stabilization required - simplifies layout and reduces BOM count in production assemblies |
| Thermal Optimization | Aluminum flange + direct heatsink mounting - sustains 460 mA operation at Tmb = 100 °C ambient |
| ESD Robustness | 2000 V HBM (Class 2) - withstands handling and field installation without gate damage |
Applications
| CATV Headend Line Amplifier | Two-Way Node Downstream Stage |
|---|---|
Use Scenario: Amplifying 98 PAL D channels (47–862 MHz) before distribution to trunk lines in centralized headend facilities. IC Role / Device Role / Timing Role: Final-stage broadband RF power amplifier providing flat gain and low distortion into 75 Ω coax. Use Value: Delivers −66 dBc CTB at 48 dBmV output, meeting ITU-T J.112 linearity mandates without post-amplifier filtering. |
Use Scenario: Downstream amplification in fiber-deep two-way nodes serving 112 NTSC channels (45–750 MHz). IC Role / Device Role / Timing Role: High-output RF doubler driving split outputs to multiple distribution arms. Use Value: Maintains ≥20 dB input return loss below 320 MHz, reducing upstream ingress coupling from downstream stages. |
| Digital Cable Extension Module | DOCSIS 3.1 Forward Path Booster |
Use Scenario: Extending spectrum coverage to 1003 MHz for 75 digital QAM channels in legacy plant upgrades. IC Role / Device Role / Timing Role: High-linearity broadband amplifier enabling flat Vo up to 1003 MHz with −75 dBc CTB. Use Value: Supports 56.4 dBmV output with CCN ≥57 dBc, preserving SNR for 256-QAM and 1024-QAM modulation. |
Use Scenario: Boosting forward-path signals in DOCSIS 3.1-compliant nodes requiring extended spectral flatness. IC Role / Device Role / Timing Role: Stable, low-noise RF gain block operating at 24 V DC with minimal thermal drift. Use Value: Gain compensation over temperature ensures ±0.3 dB gain stability from −20 °C to +100 °C mounting base temp. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RF power amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CGD985HCL,112 | Same die and SOT115J package; differs only in tape-and-reel packaging variant (no electrical difference) | Identical performance and PCB footprint; selected for automated SMT assembly vs. manual placement | Choose CGD985HCL,112 for high-volume pick-and-place production; CGD985HCI,112 for prototyping or low-volume hand-soldered builds |
| CGD985HCN,112 | Same RF specs but rated for −40 °C to +105 °C operating range (vs. −20 °C to +100 °C for CGD985HCI,112) | Required for outdoor cabinets exposed to extreme ambient temperatures; not needed for climate-controlled headends | Specify CGD985HCN,112 only when mounting base temperature may exceed +100 °C or drop below −20 °C |
Compared with CGD985HCI,112, the CGD985HCL,112 offers identical RF performance in a different packaging format for SMT efficiency, while CGD985HCN,112 extends thermal operating range at no RF trade-off-making both viable alternatives depending on manufacturing method and environmental deployment.
Availability
CGD985HCI,112 is available at Aetrix Electronics and suitable for CATV headend amplification, two-way node downstream stages, digital cable extension modules, and DOCSIS 3.1 forward path boosters requiring stable component supply and long-lifecycle support.
Supply support for CGD985HCI,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 semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and communications markets, with core expertise in RF power, analog, and mixed-signal ICs.
The CGD985HCI,112 belongs to NXP's CATV RF power amplifier product line, engineered specifically for broadband cable infrastructure applications demanding high linearity, thermal resilience, and compliance with international RF emission and surge standards.
FAQ
What is the maximum supply voltage rating for CGD985HCI,112?
The absolute maximum supply voltage for CGD985HCI,112 is 30 V DC, per IEC 60134 limiting values. Operation is specified at 24 V DC, and exceeding 30 V risks permanent damage to the GaAs HFET dies. The device must be used within recommended conditions-24 V ±5 %-to maintain specified gain, distortion, and thermal performance.
Does CGD985HCI,112 require external bias sequencing or startup circuitry?
No, CGD985HCI,112 operates as a single-supply DC-coupled amplifier with no external bias sequencing required. Applying 24 V DC to pin 5 immediately enables full RF functionality. The module integrates internal bias networks and gain compensation circuitry, eliminating need for external VGS control or ramp-up timing circuits.
Can CGD985HCI,112 be used in 50 Ω RF systems?
CGD985HCI,112 is characterized and optimized for 75 Ω CATV systems. While it can operate with 50 Ω terminations, mismatched impedance degrades return loss (e.g., RLin drops from ≥20 dB to ~12 dB), increases distortion, and reduces effective output power. For 50 Ω applications, NXP recommends dedicated 50 Ω RF amplifiers such as the BGU7005 series-not CGD985HCI,112.
What is the thermal resistance (Rth) from mounting base to ambient for CGD985HCI,112?
The datasheet does not specify Rth(jb) or Rth(ja) values for CGD985HCI,112. Thermal performance is defined by mounting base temperature limits: Tmb must remain between −20 °C and +100 °C. Actual junction temperature depends on heatsink design, airflow, and PCB copper area-designers must validate thermal margin using IR imaging or thermocouple measurement at the flange surface during worst-case 460 mA operation.
Is CGD985HCI,112 RoHS compliant and lead-free?
Yes, CGD985HCI,112 complies with Directive 2002/95/EC (RoHS) and is manufactured with lead-free terminations. The gold-plated in-line leads and aluminum flange meet EU hazardous substance restrictions, and the device carries the RoHS marking per NXP's product data sheet Rev. 1 (2011). No lead or cadmium is present in solderable surfaces or internal die attach.
CGD985HCI,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- SOT-115J
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Applications:
- CATV
- Output Type:
- -
- Number of Circuits:
- 1
- -3db Bandwidth:
- -
- Slew Rate:
- -
- Current - Supply:
- 440 mA
- Current - Output / Channel:
- -
- Voltage - Supply, Single/Dual (±):
- -
- Mounting Type:
- Chassis Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT115J
CGD985HCI,112 FAQ
1.How can I place an order for CGD985HCI,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for CGD985HCI,112 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for CGD985HCI,112 reliable?
The price and inventory of CGD985HCI,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CGD985HCI,112 is usually 5 days.
3.What payment methods are accepted for CGD985HCI,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CGD985HCI,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CGD985HCI,112?
CGD985HCI,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CGD985HCI,112 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for CGD985HCI,112?
For technical support, including CGD985HCI,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CGD985HCI,112 requirements.
6.How does Aetrix verify that CGD985HCI,112 is sourced from the original manufacturer or authorized distributors?
All CGD985HCI,112 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that CGD985HCI,112 meets industry standards.
7.What is the process for return or replacement of CGD985HCI,112?
All CGD985HCI,112 units undergo pre-shipment inspection (PSI). If there is an issue with CGD985HCI,112, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The CGD985HCI,112 part is unused and in its original packaging.
Return procedure for CGD985HCI,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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