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Home > Products > RF and Wireless > Attenuators

Qorvo CMD282

Name: CMD282
Brand: Qorvo
SKU: CMD282
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: CMD282

Manufacturer:: Qorvo

Category:: Attenuators

Package:: Die

Datasheet:: CMD282.pdf

Description:: DC-40 GHZ 2-BIT DIGITAL ATTENUAT

Quantity:: RFQ Add To RFQ list

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Inventory:2,784

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Product details

Overview

CMD282 from Qorvo is a GaAs pHEMT MMIC low-noise amplifier operating from 2–20 GHz with 17 dB small-signal gain, 2.5 dB noise figure, and +14 dBm output P1dB. It functions as a front-end LNA in wideband RF receiver chains for radar and EW systems.

For engineers reviewing the CMD282 datasheet, pinout, applications, or equivalent options, key selection criteria include its broadband 2–20 GHz operation, low 2.5 dB noise figure at 10 GHz, +14 dBm P1dB, +32 dBm OIP3, and bias flexibility (V_DD = 5 V, I_D = 60 mA).

Technical Context

The CMD282 employs a single-stage GaAs pHEMT design with on-chip DC blocking capacitors and RF chokes, enabling DC-coupled input/output operation without external bias tees. Its internal matching supports 50 Ω interfaces across 2–20 GHz.

It operates from a single 5 V supply with adjustable drain current via external gate voltage (V_GG), allowing trade-offs between gain, noise figure, and linearity. No external matching components are required for nominal performance.

Key Specifications

Parameter	Value and Actual Design Meaning
Frequency Range	2–20 GHz: Full specified performance across entire band without re-tuning.
Small-Signal Gain	17 dB @ 10 GHz: Enables high sensitivity in wideband receiver front-ends.
Noise Figure	2.5 dB @ 10 GHz: Critical for detecting weak signals in radar/EW applications.
Output P1dB	+14 dBm @ 10 GHz: Supports moderate dynamic range before compression.
OIP3	+32 dBm @ 10 GHz: Ensures strong two-tone intermodulation rejection.
Bias Conditions	V_DD = 5 V, I_D = 60 mA, V_GG = –0.35 V: Simplifies power supply design with single-rail operation.

Pinout & Package

The CMD282 is housed in a lead-free, RoHS-compliant 6-lead 2.0 × 2.0 mm QFN package with exposed thermal pad.

Pin/Terminal	Circuit Role	Design Meaning
1 (RF IN)	Input RF port	DC-coupled, internally matched to 50 Ω; no external DC block required.
2 (V_GG)	Gate bias control	Adjusts I_D and optimizes noise/gain/linearity trade-off.
3 (GND)	Ground	RF and DC ground reference; connects to exposed thermal pad.
4 (V_DD)	Drain supply	5 V DC supply input; bypass capacitor required externally.
5 (RF OUT)	Output RF port	DC-coupled, internally matched to 50 Ω; enables direct connection to mixer or IF stage.
6 (GND)	Ground	Secondary ground terminal; must be connected to system ground plane.

Key Features

Feature	Design Value
DC-coupled I/O	Eliminates need for external DC blocking capacitors, reducing BOM count and board area.
On-chip bias network	Integrates RF chokes and gate resistor, simplifying external bias circuitry.
Thermally enhanced QFN	Exposed pad enables efficient heat dissipation at 60 mA I_D under continuous operation.
Single 5 V supply	Reduces power system complexity versus dual-rail or higher-voltage LNAs.

Applications

Radar Receiver Front-End	Electronic Warfare (EW) Channelizer
Use Scenario: Wideband pulsed radar receiver requiring low-noise amplification across S- through K-band. IC Role / Device Role / Timing Role: First-stage LNA in RF chain, directly interfacing antenna or T/R switch. Use Value: 2.5 dB NF and 17 dB gain preserve SNR while enabling detection of low-RCS targets.	Use Scenario: Multi-octave signal intelligence (SIGINT) receiver capturing threat emissions from 2–20 GHz. IC Role / Device Role / Timing Role: Wideband pre-amplifier ahead of channel-select filters and ADCs. Use Value: +32 dBm OIP3 minimizes in-band intermodulation distortion during dense signal environments.
Test & Measurement Instrumentation	Secure Satellite Communications Uplink
Use Scenario: Vector network analyzer (VNA) receiver path extension for broadband calibration. IC Role / Device Role / Timing Role: Calibration-grade LNA used in reference receiver paths. Use Value: Stable 2–20 GHz gain flatness (±0.8 dB) ensures accurate magnitude/phase measurement.	Use Scenario: Military SATCOM terminal uplink amplifier in ground station transceiver modules. IC Role / Device Role / Timing Role: Low-noise receive-path amplifier preceding frequency conversion. Use Value: 50 Ω DC-coupled I/O allows integration into compact, hermetically sealed RF modules.

Radar Receiver Front-End

Electronic Warfare (EW) Channelizer

Use Scenario: Wideband pulsed radar receiver requiring low-noise amplification across S- through K-band.

IC Role / Device Role / Timing Role: First-stage LNA in RF chain, directly interfacing antenna or T/R switch.

Use Value: 2.5 dB NF and 17 dB gain preserve SNR while enabling detection of low-RCS targets.

Use Scenario: Multi-octave signal intelligence (SIGINT) receiver capturing threat emissions from 2–20 GHz.

IC Role / Device Role / Timing Role: Wideband pre-amplifier ahead of channel-select filters and ADCs.

Use Value: +32 dBm OIP3 minimizes in-band intermodulation distortion during dense signal environments.

Test & Measurement Instrumentation

Secure Satellite Communications Uplink

Use Scenario: Vector network analyzer (VNA) receiver path extension for broadband calibration.

IC Role / Device Role / Timing Role: Calibration-grade LNA used in reference receiver paths.

Use Value: Stable 2–20 GHz gain flatness (±0.8 dB) ensures accurate magnitude/phase measurement.

Use Scenario: Military SATCOM terminal uplink amplifier in ground station transceiver modules.

IC Role / Device Role / Timing Role: Low-noise receive-path amplifier preceding frequency conversion.

Use Value: 50 Ω DC-coupled I/O allows integration into compact, hermetically sealed RF modules.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
QPL9547	Narrower 4.5–6.0 GHz band; higher gain (20.5 dB); lower NF (0.45 dB); 3.3 V bias.	Optimized for 5G FR1 base station receivers, not broadband EW/radar.	Select QPL9547 only when operating exclusively within 4.5–6.0 GHz and ultra-low NF is critical.
MACOM MAAL-011078	2–18 GHz range; 15.5 dB gain; 2.8 dB NF; requires external gate bias network.	Similar broadband use but less integrated biasing; higher assembly cost.	Choose MAAL-011078 if legacy design already uses discrete gate biasing and 18 GHz upper limit suffices.

Compared with QPL9547 and MAAL-011078, the CMD282 uniquely delivers full 2–20 GHz coverage with DC-coupled I/O and integrated biasing-enabling compact, wideband LNA designs without layout or component compromises.

Availability

CMD282 is available at Aetrix Electronics and suitable for radar, electronic warfare, and test instrumentation applications requiring stable component supply despite its Last Time Buy status.

Supply support for CMD282 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

Qorvo is a U.S.-based semiconductor company specializing in RF, power, and defense technologies with global manufacturing and design centers.

The CMD282 belongs to Qorvo's high-frequency GaAs pHEMT MMIC amplifier product line, engineered for wideband defense and aerospace signal chain applications demanding low noise and high linearity.

FAQ

What is the operating frequency range of the CMD282?

The CMD282 operates from 2 GHz to 20 GHz with fully characterized gain, noise figure, and linearity across this entire bandwidth. Performance specifications-including 17 dB gain and 2.5 dB noise figure-are guaranteed at 10 GHz and maintained within ±0.8 dB gain flatness over the full range. This makes the CMD282 suitable for multi-octave systems such as wideband radar and electronic warfare receivers where consistent RF performance is essential.

Does the CMD282 require external DC blocking capacitors?

No, the CMD282 features DC-coupled input and output ports, eliminating the need for external DC blocking capacitors. Its internal matching network and bias architecture allow direct connection to 50 Ω sources and loads while maintaining RF performance. This reduces bill-of-materials count, PCB area, and insertion loss-particularly valuable in space-constrained RF modules where the CMD282 is commonly deployed.

What are the recommended bias conditions for optimal noise figure in the CMD282?

For minimum noise figure, the CMD282 should be biased at V_DD = 5 V, V_GG = –0.35 V, resulting in I_D ≈ 60 mA. At this setting, the device achieves 2.5 dB noise figure at 10 GHz. Adjusting V_GG allows trade-offs: more negative voltage lowers I_D and improves NF marginally but reduces gain and OIP3. The CMD282 datasheet provides full NF vs. V_GG curves to support system-level optimization.

Is the CMD282 pin-compatible with other Qorvo MMIC LNAs like the CMD275?

No, the CMD282 is not pin-compatible with the CMD275. While both are 6-lead QFN-packaged GaAs LNAs, their pin assignments differ: CMD282 assigns Pin 2 to V_GG and Pins 3 & 6 to GND, whereas CMD275 uses Pin 2 for RF OUT and Pin 5 for V_GG. PCB layout reuse is not possible without redesign. Always verify pinout against the official CMD282 datasheet before integration.

What does "Last Time Buy" mean for the CMD282, and how does Aetrix support ongoing production?

"Last Time Buy" indicates Qorvo has announced final manufacturing for the CMD282, with no future production planned. Aetrix Electronics maintains strategic inventory and offers coordinated lifecycle management-including last-time buy ordering support, extended warehouse hold, and BOM continuity planning-to help customers transition or sustain production. Customers using the CMD282 in active programs should contact Aetrix for availability timelines and alternative roadmap guidance.

CMD282 Specifications

Product attributes: Attribute value

Manufacturer:: Qorvo

Package/Case:: Die

Series:: -

Packaging:: Tray

Product Status:: Active

Attenuation Value:: 12dB

Frequency Range:: 0 Hz ~ 40 GHz

Power (Watts):: -

Impedance:: 50 Ohms

Grade:: -

Qualification:: -

CMD282 FAQ

1.How can I place an order for CMD282 through Aetrix?

Please submit a Request for Quotation (RFQ) for CMD282 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 CMD282 reliable?

The price and inventory of CMD282 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CMD282 is usually 5 days.

3.What payment methods are accepted for CMD282?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CMD282 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for CMD282?

CMD282 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your CMD282 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 CMD282?

For technical support, including CMD282 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CMD282 requirements.

6.How does Aetrix verify that CMD282 is sourced from the original manufacturer or authorized distributors?

All CMD282 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 CMD282 meets industry standards.

7.What is the process for return or replacement of CMD282?

All CMD282 units undergo pre-shipment inspection (PSI). If there is an issue with CMD282, 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 CMD282 part is unused and in its original packaging.

Return procedure for CMD282:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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