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NXP Semiconductors CGD914,112
- Part No.:
- CGD914,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Video Amps and Modules
- Package:
- SOT-115J
- Datasheet:
-
CGD914,112.pdf
- Description:
- IC AMP CATV SOT115J
- Quantity:
- Payment:
- Shipping:
Inventory:3,471
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Product details
Overview
CGD914 from NXP Semiconductors is a hybrid GaAs/Si power doubler amplifier module designed for CATV distribution amplifiers and line extender stages, delivering 20 dB small-signal gain at 860 MHz, 21 dB maximum gain at 870 MHz, and 69 dBmV output voltage under composite distortion test conditions, with 2.5 dB typical noise figure at 50 MHz.
For engineers reviewing the CGD914 datasheet, CGD914 pinout, CGD914 application, or CGD914 equivalent, this page provides verified technical context, SOT115J package mapping, RF performance metrics across 45–870 MHz, and validated alternatives for broadband cable infrastructure designs requiring high linearity and rugged 24 V DC operation.
Technical Context
The CGD914 employs a hybrid construction integrating GaAs and silicon dies in a single SOT115J metal-flange package, operating at 24 V DC with total current draw of 360 mA typical. Its architecture delivers broadband amplification from 45 MHz to 870 MHz with flatness ≤ ±0.4 dB over 100–800 MHz and input/output return loss ≥14 dB up to 870 MHz.
It achieves low distortion via optimized biasing and impedance matching: CTB reaches −76 dB (79 channels), CSO (sum) −71 dB, and Xmod −70 dB under standardized DIN45004B testing, all measured at 75 Ω system impedance with tilt-compensated signal profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Power Gain | 20 dB typ. at 45 MHz; 21 dB typ. at 870 MHz - ensures consistent signal boost across full CATV band |
| Noise Figure | 2.5 dB typ. at 50 MHz - preserves upstream SNR in bidirectional HFC networks |
| Output Voltage | 69 dBmV (79 ch, dim = −60 dB) - supports high-channel-count analog/digital RF delivery |
| Composite Triple Beat | −76 dB (79 ch, 445.25 MHz) - meets stringent DOCSIS 3.1/4.0 upstream linearity requirements |
| Total Current | 360 mA typ. at 24 V - enables thermal design with 100 °C max mounting base temperature |
| Input Return Loss | ≥14 dB up to 870 MHz - minimizes reflections in cascaded amplifier chains |
| Supply Voltage Range | 24 V nominal, withstands transients to 30 V - accommodates field-level power rail variations |
Pinout & Package
SOT115J is a rectangular single-ended metal-flange package with 7 gold-plated in-line leads, 2 vertical 6-32 UNC mounting holes, and aluminum construction rated for −20 °C to +100 °C operating mounting base temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RF Input | 50 Ω matched input port; connects to preceding stage or splitter output |
| 2 & 3 | Common Ground | DC and RF ground reference; must be low-inductance connection to chassis |
| 5 | +VB Supply | 24 V DC power input; requires local 10 µF/0.1 µF decoupling per datasheet layout guidance |
| 7 & 8 | Common Ground | Secondary ground path; ties flange and heatsink to signal ground plane |
| 9 | RF Output | 75 Ω matched output port; drives coaxial trunk or distribution leg with minimal mismatch loss |
Key Features
| Feature | Design Value |
|---|---|
| Hybrid GaAs/Si die integration | Combines GaAs high-frequency gain with Si robustness for 24 V operation and thermal stability |
| Gold metallization | Ensures long-term bond-wire reliability and corrosion resistance in humid CATV plant environments |
| Excellent return loss | Input s11 ≥20 dB (40–80 MHz), output s22 ≥21 dB (40–80 MHz) - reduces cascade VSWR accumulation |
| Rugged mechanical construction | Aluminum flange with dual-axis mounting enables secure attachment in outdoor amplifier housings |
| Low slope variation | 1.5 dB max gain slope (45–870 MHz) - simplifies equalizer design in multi-stage nodes |
Applications
| Headend Distribution Amplifier | Node Line Extender |
|---|---|
Use Scenario: Amplifying downstream RF signals before splitting to multiple fiber nodes in a CATV headend. IC Role / Device Role / Timing Role: Final-stage broadband power doubler providing 20 dB gain and high-output drive capability into 75 Ω coaxial distribution network. Use Value: Delivers 69 dBmV output with −76 dB CTB at 79 channels, enabling clean signal delivery to >100 subscriber drops without re-amplification. |
Use Scenario: Boosting RF signals between optical receivers and coaxial distribution legs in fiber-deep node architectures. IC Role / Device Role / Timing Role: Mid-chain RF power amplifier maintaining signal integrity across 45–870 MHz while minimizing added noise and distortion. Use Value: 2.5 dB noise figure at 50 MHz and ≥14 dB return loss up to 870 MHz preserve upstream SNR and reduce reflection-induced ingress. |
| Two-Way Splitter Amplifier | DOCSIS Upstream Booster |
Use Scenario: Driving both forward and reverse paths in active two-way splitters used in MDU or commercial building deployments. IC Role / Device Role / Timing Role: Forward-path power doubler operating at 24 V with flat gain response and low intermodulation. Use Value: Slope straight-line variation ≤1.5 dB (45–870 MHz) allows simple passive tilt compensation, reducing component count in compact splitter modules. |
Use Scenario: Enhancing upstream return-path signals (5–85 MHz) in legacy or hybrid fiber-coax plants with marginal upstream SNR. IC Role / Device Role / Timing Role: Low-noise, high-linearity amplifier placed after diplex filter to boost weak upstream bursts before transmission to CMTS. Use Value: −70 dB Xmod at 55.25 MHz and 2.5 dB NF at 50 MHz directly improve upstream MER and reduce packet loss in noisy plant conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar broadband RF amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CGD914MI | Electrically identical to CGD914 but with reversed pinout: Pin 1 = output, Pin 9 = input | Requires PCB layout revision; not drop-in compatible despite same electrical specs | Select CGD914MI only when redesigning for inverted I/O routing or space-constrained board layouts |
| MAX2472EUT+T | SiGe MMIC with 17 dB gain at 860 MHz, 3.5 dB NF, 5 V supply, SOT23-6 package | Limited to lower power; unsuitable for high-output CATV line extender use due to 15 dBm P1dB vs CGD914's ~30 dBm | Consider MAX2472EUT+T only for low-power, cost-sensitive RF front-end buffering-not for infrastructure-grade amplification |
Compared with CGD914, CGD914MI offers identical RF performance but demands PCB redesign for pin reversal, while MAX2472EUT+T trades output power and linearity for low-voltage operation and smaller footprint-making it suitable only for non-infrastructure signal conditioning.
Availability
CGD914 is available at Aetrix Electronics and suitable for CATV headend distribution amplifiers, fiber node line extenders, active two-way splitters, and DOCSIS upstream boosters requiring stable component supply and long-lifecycle support.
Supply support for CGD914 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 ICs and modules.
The CGD914 belongs to NXP's legacy CATV amplifier portfolio, engineered specifically for cable infrastructure applications demanding high gain, low noise, and rugged hybrid construction in 24 V-powered distribution systems.
FAQ
What is the recommended supply voltage for stable operation of the CGD914?
The CGD914 is specified for nominal 24 V DC operation with total current consumption of 360 mA typical. It can withstand transient voltages up to 30 V per Absolute Maximum Ratings, but sustained operation above 24 V risks exceeding thermal limits and degrading long-term reliability. Stable performance requires low-ripple, well-decoupled 24 V supply with local 10 µF + 0.1 µF capacitors at Pin 5, as documented in the CGD914 datasheet section on decoupling layout.
Does the CGD914 support both flat and tilted frequency response modes?
Yes, the CGD914 maintains specified performance under both flat and tilted input conditions. Datasheet Figures 6–9 (flat) and Figures 2–5 (tilted) confirm CTB, Xmod, and CSO values across 79/112/132 channel counts with tilt slopes of 7.3 dB, 10.2 dB, and 12 dB. Its gain flatness remains within ±0.4 dB (100–800 MHz) regardless of input spectral profile, enabling flexible deployment in legacy and modern HFC networks.
How does the CGD914 compare to the CGD914MI in terms of pin compatibility?
The CGD914 and CGD914MI are electrically identical but have opposite pinouts: CGD914 uses Pin 1 for input and Pin 9 for output, whereas CGD914MI swaps these roles. They share the same SOT115J package, thermal specs, and RF characteristics, but are not pin-compatible-PCB layout changes are mandatory when substituting one for the other. This reversal is explicitly noted in the "PINNING" section of the CGD914 datasheet.
What is the maximum operating temperature for the CGD914 mounting base?
The CGD914 specifies an operating mounting base temperature (Tmb) range of −20 °C to +100 °C. This rating applies to the aluminum flange surface where the device is mechanically mounted and thermally coupled to a heatsink or chassis. Exceeding +100 °C at the mounting base risks permanent degradation of internal die bonds and gold metallization, as confirmed in the Limiting Values table on page 3 of the CGD914 datasheet.
Can the CGD914 be used in DOCSIS 4.0-compliant upstream paths?
Yes-the CGD914 meets key upstream linearity requirements for DOCSIS 4.0: its −70 dB Xmod at 55.25 MHz and −76 dB CTB at 79 channels align with upstream spectral purity mandates. With 2.5 dB NF at 50 MHz and ≥14 dB input return loss up to 870 MHz, it preserves upstream SNR and minimizes echo in full-duplex operation. However, system-level validation against specific DOCSIS 4.0 PHY layer tests remains the designer's responsibility.
CGD914,112 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:
- 360 mA
- Current - Output / Channel:
- -
- Voltage - Supply, Single/Dual (±):
- -
- Mounting Type:
- Chassis Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- SOT115J
CGD914,112 FAQ
1.How can I place an order for CGD914,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for CGD914,112 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 CGD914,112 reliable?
The price and inventory of CGD914,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CGD914,112 is usually 5 days.
3.What payment methods are accepted for CGD914,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CGD914,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CGD914,112?
CGD914,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CGD914,112 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 CGD914,112?
For technical support, including CGD914,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CGD914,112 requirements.
6.How does Aetrix verify that CGD914,112 is sourced from the original manufacturer or authorized distributors?
All CGD914,112 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 CGD914,112 meets industry standards.
7.What is the process for return or replacement of CGD914,112?
All CGD914,112 units undergo pre-shipment inspection (PSI). If there is an issue with CGD914,112, 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 CGD914,112 part is unused and in its original packaging.
Return procedure for CGD914,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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