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HMC424LP3ETR
HMC424LP3ETR
| Part Number | HMC424LP3ETR |
|---|---|
| Manufacturer | Analog Devices Inc. (ADI) / Former Hittite Microwave |
| Category | RF/IF and RFID > Attenuators |
| Description | High-linearity, broadband 0.5dB step GaAs MMIC 6-bit digital attenuator operating from DC to 13.0 GHz, offering 31.5dB attenuation range in a compact, lead-free 3x3mm QFN package. This part is obsolete from ADI, only original factory stock available. |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The HMC424LP3ETR is a broadband GaAs MMIC 6-bit digital attenuator from Analog Devices (acquired Hittite). It covers DC to 13GHz with total 31.5dB attenuation in precise 0.5dB steps, featuring low insertion loss and consistent attenuation accuracy. Controlled by 6 parallel 0/-5V negative logic lines, it delivers high linearity (IIP3 +32dBm) for RF infrastructure, test equipment and radar systems. Packaged in 3×3mm 16-pin exposed pad QFN, it maintains stable RF performance across full industrial temperature range.
Core Advantages
Ultra-Wideband Performance
Continuous DC to 13GHz operation, compatible with C-band, X-band and Ku-band RF signal processing.
Precise Attenuation Adjustment
6-bit binary design delivers 0.5dB minimal step up to full 31.5dB attenuation range with tight tolerance.
High Linearity & Low Distortion
+32dBm typical IIP3 prevents intermod distortion, ideal for high dynamic range RF front-end circuits.
Stable GaAs Process Design
GaAs semiconductor structure guarantees repeatable attenuation values over wide temperature fluctuations.
Key Specifications
| Brand | Analog Devices Inc. (ADI) / Hittite RF Series |
|---|---|
| RoHS Status | RoHS Compliant, Lead-Free, Halogen-Free Construction |
| EDA/CAD Model | PCB footprint, schematic symbol and 3D STEP files available on request |
| Warranty | 1-Year Standard Original Part Quality Warranty |
| Package / Case | 16-VFQFN (3mm × 3mm × 0.9mm) |
| Mounting Type | Surface Mount |
| Surface Marking / Silkscreen | 424 Marking |
| Attenuator Type | 6-Bit Binary Digital RF Attenuator |
| Frequency Range | DC to 13.0 GHz full wideband operation |
| Attenuation Range | 0 ~ 31.5dB total range, 0.5dB step increments |
| Insertion Loss | 3.0dB typical (DC~8GHz), 4.0dB typical (8~13GHz) |
| Attenuation Accuracy | ±0.5dB typical step error across full frequency band |
| Input Third-Order Intercept (IIP3) | +32 dBm typical at minimum attenuation state (DC-13GHz) |
| Control Input Logic | Parallel 6-bit negative logic, 0V low / -5V high control rail |
| Impedance | 50 Ohm standard RF system characteristic impedance |
| Operating Temperature Range | -55°C to +85°C industrial full range |
| Lifecycle Status | ADI Discontinued / Obsolete, only original factory stock supplied |
| Return Loss | ≥12dB typical (DC~8GHz), ≥8dB typical (8~13GHz) |
| Supply Voltage | -5V Single Supply Rail |
Typical Applications
- Microwave P2P / P2MP wireless backhaul radio equipment
- Cellular base station transceivers & remote radio head modules
- Military radar, electronic warfare and aerospace RF subsystems
- Broadband fiber optical transmission & RF test instruments
- Lab automated test equipment, RF signal generator frontends
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Ship out within 1-2 working days after payment |
| Delivery Time | 3-7 working days worldwide delivery |
| Shipping Methods | DHL, UPS, FedEx, EMS global express |
| Payment Methods | T/T Bank Transfer, PayPal, Credit Card, Western Union |
Technical Support
Submit datasheet requests, sample testing, stock verification or bulk pricing via our inquiry form. All customer messages will be replied within 24 working hours.
Frequently Asked Questions
Q1: Is HMC424LP3ETR original brand-new stock?
A: All parts are original factory tape & reel goods, stored in ESD and moisture-proof warehouse.
Q2: What control voltage does this digital attenuator use?
A: It adopts 0/-5V parallel negative logic. 3.3V/5V MCU needs extra negative level shifter.
Q3: Will attenuation accuracy drop at 13GHz high frequency?
A: Slight deviation exists above 8GHz. Software calibration can eliminate high-frequency loss error.
Q4: How to design PCB for stable 13GHz RF performance?
A: Use 50-ohm microstrip, high-frequency substrate, fully solder thermal pad with dense ground vias.
Q5: Is this chip still in mass production by ADI?
A: ADI discontinued this model in 2015. We only supply original leftover stock, no copies or refurbs.
Q6: Can I buy small samples for prototype testing?
A: MOQ is 1 piece. Small sample orders for lab verification are fully supported.
Q7: What is the warranty period for this attenuator?
A: We provide 1-year quality warranty for all original purchased components.
Q8: Does this RF chip require ESD protection during handling?
A: Yes. GaAs chips are sensitive to static; please use anti-static gloves and trays during operation.
Q9: What shipping methods do you offer for global orders?
A: We support DHL, UPS, FedEx and EMS, shipped within 1-2 working days after payment.
Q10: Is tape & reel packaging available for bulk quantity orders?
A: Yes. Original factory tape & reel packaging can be provided for mass bulk orders.
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