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Analog Devices Inc. 107846-HMC368LP4
- Part No.:
- 107846-HMC368LP4
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
107846-HMC368LP4.pdf
- Description:
- BOARD EVAL MULTIPLIER HMC368
- Quantity:
- Payment:
- Shipping:
Inventory:4,457
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Product details
Overview
HMC368LP4 from Analog Devices (formerly Hittite Microwave) is a GaAs PHEMT MMIC active frequency multiplier with integrated amplifier-doubler-amplifier architecture, delivering +15 dBm typical output power across 9–16 GHz output range when driven by +2 dBm input at 4.5–8.0 GHz. It operates from a single +5 V supply at 75 mA and features -140 dBc/Hz SSB phase noise at 100 kHz offset (Fout = 13 GHz), targeting LO multiplication in high-frequency microwave systems.
For engineers reviewing the HMC368LP4 datasheet, HMC368LP4 pinout, HMC368LP4 application, or HMC368LP4 equivalent, key selection criteria include its 9–16 GHz output bandwidth, Fo/3Fo isolation ≥18 dB, 4×4 mm QFN package with 24-pin leadless layout, and bias flexibility via adjustable gate voltages (Vg1/Vg2 = -2 to 0 V).
Technical Context
The HMC368LP4 implements a three-stage monolithic amp-doubler-amp topology: input amplifier boosts drive signal, passive doubler generates 2Fo, and output amplifier delivers amplified 2Fo output. Its design targets second-harmonic generation with minimal fundamental (Fo) and third-harmonic (3Fo) leakage-both isolated ≥18 dB relative to output level.
It requires no external DC blocking on RFIN or RFOUT, supports wide input drive range (0 to +10 dBm), and maintains stable output power over temperature (-40°C to +85°C) and supply voltage (4.5–5.5 V). Gate bias tuning enables precise drain current control for optimal phase noise and output power trade-offs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency Range | 9.0–16.0 GHz - covers X-band and Ku-band radar/radio links without external filtering. |
| Output Power (Typ.) | +15 dBm @ +2 dBm input - sufficient to drive mixers or subsequent amplifiers without external gain stages. |
| SSB Phase Noise | -140 dBc/Hz @ 100 kHz offset (Fout = 13 GHz) - preserves system EVM and spectral purity in coherent transceivers. |
| Fo & 3Fo Isolation | ≥18 dB each - reduces need for external harmonic suppression filters in LO chains. |
| Input Return Loss | ≥10 dB - ensures stable impedance match into 50 Ω source over full 4.5–8.0 GHz input band. |
| Supply Current | 75 mA @ +5 V - enables low-power LO synthesis in compact RF modules. |
| Operating Temperature | -40°C to +85°C - qualified for outdoor microwave radios and military comms hardware. |
Pinout & Package
Package: 4 × 4 mm, 24-pin leadless QFN (exposed paddle), MSL1, Sn/Pb finish, thermal resistance 80 °C/W (junction-to-paddle).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5–14, 18, 19, 24 | No Connection | May be tied to RF ground; no impact on RF performance or biasing. |
| 3 | RFIN | AC-coupled RF input port; accepts 4.5–8.0 GHz drive without external DC block. |
| 2, 4, 15, 17 | GND | RF/DC ground terminals; must be soldered to PCB ground plane for thermal and impedance integrity. |
| 16 | RFOUT | AC-coupled RF output port; delivers 9–16 GHz multiplied signal without external DC block. |
| 20, 22 | Vd2, Vd1 | Drain supply pins (+5 V ± 0.5 V); power all active stages. |
| 21, 23 | Vg2, Vg1 | Gate bias inputs (-2 to 0 V); adjust to set Idd = 75 mA for optimal phase noise/output power. |
Key Features
| Feature | Design Value |
|---|---|
| Monolithic Amp-Doubler-Amp Architecture | Integrates input amp, harmonic generator, and output amp in one die-eliminates discrete interstage matching and reduces LO chain component count. |
| High Fo/3Fo Isolation (≥18 dB) | Minimizes spurious content at fundamental and triple frequencies, easing filter requirements in sensitive receiver front-ends. |
| Low Additive Phase Noise (-140 dBc/Hz) | Preserves local oscillator spectral purity critical for high-order QAM modulation in microwave backhaul. |
| Wide Input Drive Range (0 to +10 dBm) | Accommodates variable-level sources without external attenuators or gain control, simplifying system-level calibration. |
| Thermally Optimized QFN Package | Exposed paddle and low θJA (80 °C/W) enable reliable operation at full rated power in compact RF modules. |
Applications
| Microwave Point-to-Point Radios | VSAT Terminals |
|---|---|
|
Use Scenario: Generating stable 12–14 GHz LO signals for up/down-conversion in licensed 6–11 GHz backhaul links. IC Role / Device Role / Timing Role: Second-harmonic LO multiplier in transmit/receive synthesizer chain. Use Value: +15 dBm output eliminates need for post-multiplier driver amplifiers; -140 dBc/Hz phase noise meets ETSI Class 3 spectral mask requirements. |
Use Scenario: Local oscillator generation for Ku-band satellite modems operating at 10.7–12.75 GHz downlink bands. IC Role / Device Role / Timing Role: Fixed-ratio frequency multiplier feeding mixer LO ports. Use Value: ≥18 dB Fo/3Fo isolation reduces out-of-band emissions that could interfere with adjacent transponders. |
| Fiber Optic RF-over-Fiber Links | Military Radar Transceivers |
|
Use Scenario: Upconverting baseband IF signals to 9–16 GHz for analog optical transmission over single-mode fiber. IC Role / Device Role / Timing Role: RF signal conditioning stage before Mach-Zehnder modulator drive. Use Value: Wide input drive range (0 to +10 dBm) accommodates varying DAC output levels without recalibration. |
Use Scenario: Compact LO synthesis in airborne SAR or EW subsystems requiring rapid frequency agility and low SWaP. IC Role / Device Role / Timing Role: Harmonic generator in fast-switching YIG-tuned synthesizer output stage. Use Value: -40°C to +85°C operation and robust QFN package support deployment in harsh environmental enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar active frequency multiplier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC575LP3E | Wider output range (12–24 GHz), higher output power (+17 dBm), but requires +8 V supply and has higher current draw (120 mA). | Better suited for Ka-band systems; not drop-in due to different supply voltage and pinout. | Select when extending beyond 16 GHz output or needing >+15 dBm; verify PCB layout and thermal management. |
| Qorvo QM11020 | Same 9–16 GHz output, +14 dBm output power, -138 dBc/Hz phase noise, but uses 5 V single supply and 20-pin QFN (3.5 × 3.5 mm). | Smaller footprint and lower profile; slightly reduced output power and phase noise vs. HMC368LP4. | Prefer for space-constrained designs where 1 dB output or 2 dBc/Hz phase noise margin is acceptable. |
Compared with HMC575LP3E and QM11020, the HMC368LP4 offers the best balance of output power, phase noise, and +5 V compatibility in a mature 4×4 mm QFN package-ideal for volume-deployed X/Ku-band infrastructure where supply simplicity and thermal reliability are prioritized.
Availability
HMC368LP4 is available at Aetrix Electronics and suitable for microwave radios, VSAT terminals, and military communications systems requiring stable component supply, long-lifecycle support, and traceable sourcing for RF front-end production.
Supply support for HMC368LP4 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
Analog Devices acquired Hittite Microwave in 2014 and integrates its high-frequency RF portfolio into ADI's broader signal chain solutions for defense, aerospace, and communications markets.
The HMC368LP4 belongs to Hittite's legacy MMIC frequency multiplier family, designed specifically for compact, high-efficiency LO multiplication in microwave radio and radar subsystems where phase noise, isolation, and thermal stability are critical.
FAQ
What is the recommended input drive level for optimal performance of the HMC368LP4?
The HMC368LP4 achieves its specified +15 dBm typical output power and -140 dBc/Hz phase noise at a +2 dBm input drive level. It supports a wide input range (0 to +10 dBm), but deviation from +2 dBm may reduce output power flatness or increase additive phase noise. For production designs, validate performance across your actual drive level using the HMC368LP4 evaluation board (PCB 107846).
Does the HMC368LP4 require external DC blocking capacitors on RFIN or RFOUT?
No. The HMC368LP4 features internal DC blocking on both RFIN (Pin 3) and RFOUT (Pin 16), so no external DC blocks are needed. This simplifies layout and improves broadband matching. Ensure proper RF grounding of all GND pins (2, 4, 15, 17) and the exposed paddle per the Hittite land pattern recommendation.
How do I set the correct gate bias voltages for the HMC368LP4?
Apply adjustable negative gate voltages Vg1 and Vg2 (Pin 21 and Pin 23) between -2 V and 0 V to achieve the target 75 mA drain current (measured at Vd1/Vd2, Pins 20/22). Use a precision bias supply and monitor Idd while sweeping Vg; typical setting is -1.2 V to -1.5 V per gate. Do not exceed -4 V, as specified in absolute maximum ratings.
Is the HMC368LP4 pin-compatible with the HMC368LP4E variant?
Yes-the HMC368LP4 and HMC368LP4E share identical pinout, electrical specifications, and mechanical outline. The only differences are RoHS compliance (100% matte Sn finish vs. Sn/Pb) and peak reflow temperature rating (260°C vs. 235°C). Both are interchangeable in layout and function, provided solder process aligns with respective MSL1 requirements.
What thermal management is required for continuous operation of the HMC368LP4?
The HMC368LP4 dissipates ~375 mW (5 V × 75 mA) and has a junction-to-paddle thermal resistance of 80 °C/W. To maintain channel temperature ≤150°C at +85°C ambient, ensure the exposed paddle is fully soldered to a minimum 100 mm² copper thermal pad with ≥4 thermal vias. Avoid placing heat-sensitive components directly beneath the package.
107846-HMC368LP4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Bag
- Product Status:
- Active
- Type:
- Multiplier
- Frequency:
- 9GHz ~ 16GHz
- Contents:
- Board(s)
- Utilized IC / Part:
- HMC368LP4
107846-HMC368LP4 FAQ
1.How can I place an order for 107846-HMC368LP4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 107846-HMC368LP4 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 107846-HMC368LP4 reliable?
The price and inventory of 107846-HMC368LP4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 107846-HMC368LP4 is usually 5 days.
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107846-HMC368LP4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 107846-HMC368LP4 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 107846-HMC368LP4?
For technical support, including 107846-HMC368LP4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 107846-HMC368LP4 requirements.
6.How does Aetrix verify that 107846-HMC368LP4 is sourced from the original manufacturer or authorized distributors?
All 107846-HMC368LP4 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 107846-HMC368LP4 meets industry standards.
7.What is the process for return or replacement of 107846-HMC368LP4?
All 107846-HMC368LP4 units undergo pre-shipment inspection (PSI). If there is an issue with 107846-HMC368LP4, 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 107846-HMC368LP4 part is unused and in its original packaging.
Return procedure for 107846-HMC368LP4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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