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Analog Devices Inc. 105706-HMC388LP4
- Part No.:
- 105706-HMC388LP4
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
105706-HMC388LP4.pdf
- Description:
- EVAL BOARD HMC388LP4
- Quantity:
- Payment:
- Shipping:
Inventory:4,359
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Product details
Overview
HMC388LP4 from Analog Devices (formerly Hittite Microwave) is a GaAs InGaP HBT monolithic voltage-controlled oscillator with integrated buffer amplifier, operating from 3.15 to 3.4 GHz. It delivers +4.9 dBm RF output power at 3 V/39 mA, achieves −113 dBc/Hz SSB phase noise at 100 kHz offset, and requires no external resonator-enabling compact wireless local loop and microwave radio transceivers.
For engineers reviewing the HMC388LP4 datasheet, HMC388LP4 pinout, HMC388LP4 application, or HMC388LP4 equivalent, key selection criteria include its 3.15–3.4 GHz tuning range, −113 dBc/Hz phase noise at 100 kHz, 3 V single-supply operation, QFN-16 package footprint, and ±2.7 MHz peak-to-peak pulling into 2.0:1 VSWR.
Technical Context
The HMC388LP4 integrates a negative-resistance oscillator core, varactor tuning diode, and buffer amplifier on a single GaAs die, eliminating discrete resonators and reducing layout sensitivity. Its monolithic construction ensures stable phase noise across −40°C to +85°C and under mechanical shock/vibration.
Tuning is achieved via a 0–10 V control voltage applied to VTUNE (Pin 22), delivering a typical sensitivity of ~160 MHz/V near mid-band. The 3 V supply (Pin 20) powers both oscillator and buffer, with ground integrity maintained through 13 dedicated N/C pins, Pin 15, and the exposed paddle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 3.15–3.4 GHz - full band coverage for 3.3 GHz licensed wireless local loop and point-to-point microwave links. |
| Output Power | +4.9 dBm typical - sufficient to drive mixer LO ports or low-gain amplifiers without external gain stages. |
| Phase Noise | −113 dBc/Hz @ 100 kHz offset - meets stringent spectral purity requirements for VSAT and military comms. |
| Tuning Voltage Range | 0–10 V - compatible with standard DACs and analog PLL charge pumps without level-shifting. |
| Supply Current | 39 mA @ 3 V - enables low-power portable and battery-backed RF subsystems. |
| Package | QFN-16, 4×4 mm, exposed paddle - supports high-frequency grounding and thermal dissipation in dense RF layouts. |
| Pulling | ±2.7 MHz p-p into 2.0:1 VSWR - indicates robust load isolation critical for unregulated antenna interfaces. |
Pinout & Package
Package: Leadless QFN-16, 4×4 mm body with exposed metal paddle (must be soldered to PCB RF ground). RoHS-compliant version HMC388LP4E uses matte Sn finish; standard HMC388LP4 uses Sn/Pb.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–14, 17–19, 21, 23–24 | No Connection | Electrically isolated; must remain unconnected to avoid parasitic coupling or impedance discontinuities. |
| 15 | Ground | Primary DC and RF ground reference; connects directly to internal substrate and exposed paddle. |
| 16 | RF Output | AC-coupled 50 Ω output; requires external DC blocking capacitor before downstream components. |
| 20 | Supply Voltage | 3 V DC input; bypassing with 4.7 μF tantalum + 10,000 pF ceramic required per evaluation board design. |
| 22 | Tuning Voltage | Analog control port; bandwidth limited by source impedance; sensitive to noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| No external resonator required | Monolithic GaAs resonator eliminates discrete inductors/capacitors, reducing BOM count and layout sensitivity. |
| Integrated buffer amplifier | Isolates oscillator core from load variations, maintaining frequency stability and phase noise performance. |
| −40°C to +85°C operating range | Validated performance across industrial temperature extremes without derating or calibration. |
| ESD rating Class 1A (HBM) | Robust handling during assembly; no special ESD precautions beyond standard Class 1A protocols. |
| Low pulling sensitivity | ±2.7 MHz p-p into 2.0:1 VSWR enables direct connection to antennas or filters without isolators. |
Applications
| Wireless Local Loop (WLL) | VSAT Terminals |
|---|---|
Use Scenario: Fixed wireless access base station transmitting in 3.3–3.4 GHz licensed band. IC Role / Device Role / Timing Role: LO source for upconverter in outdoor unit (ODU). Use Value: −113 dBc/Hz phase noise minimizes reciprocal mixing in adjacent-channel receivers. |
Use Scenario: Ku-band VSAT transmit chain requiring stable, low-noise LO generation. IC Role / Device Role / Timing Role: Primary VCO driving frequency synthesizer for upconversion. Use Value: Monolithic structure ensures phase noise stability across temperature swings in outdoor enclosures. |
| Microwave Radio Links | Military Tactical Radios |
Use Scenario: Point-to-point backhaul radios operating at 3.25 GHz with tight channel spacing. IC Role / Device Role / Timing Role: Tunable LO generator for IF-to-RF upconversion. Use Value: 3.15–3.4 GHz range covers multiple regional 3.3 GHz allocations without hardware change. |
Use Scenario: Manpack or vehicular radio requiring rugged, shock-resistant RF sources. IC Role / Device Role / Timing Role: Frequency-agile LO for secure waveform synthesis. Use Value: Monolithic GaAs construction provides immunity to vibration-induced frequency drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC513LP5 | Wider 4.8–5.4 GHz range; higher +6.5 dBm output; −112 dBc/Hz phase noise @ 100 kHz; 5×5 mm QFN. | Targets 5 GHz point-to-point links, not 3.3 GHz WLL or VSAT bands. | Select when system operates above 4.5 GHz and requires higher output power. |
| ADF4351 | Integrated PLL + VCO; 35–4400 MHz coverage; programmable via SPI; requires external loop filter and reference clock. | Used in software-defined radios needing frequency agility and digital control-not fixed-tune LOs. | Choose for systems requiring synthesizer flexibility over pure VCO simplicity and phase noise. |
Compared with HMC388LP4, HMC513LP5 shifts operation to higher frequencies with greater output but same monolithic architecture, while ADF4351 trades phase noise and simplicity for digital programmability and wideband coverage-making HMC388LP4 optimal for fixed-band, low-noise, analog-tuned applications.
Availability
HMC388LP4 is available at Aetrix Electronics and suitable for wireless local loop infrastructure, VSAT terminals, and microwave radio equipment requiring stable component supply, consistent RF performance, and long-term obsolescence management.
Supply support for HMC388LP4 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 maintains its high-frequency RF product lines, including MMIC VCOs, PLOs, and microwave ICs for defense, communications, and test equipment.
The HMC388LP4 belongs to Hittite's legacy MMIC VCO family designed specifically for low-phase-noise, surface-mount LO generation in 3–6 GHz wireless infrastructure-prioritizing monolithic integration and thermal stability over programmability.
FAQ
What is the operating temperature range for the HMC388LP4?
The HMC388LP4 is specified to operate from −40°C to +85°C ambient temperature. Performance parameters-including frequency range, output power, and phase noise-are guaranteed across this full industrial temperature range without recalibration or derating. The monolithic GaAs structure contributes to minimal frequency drift (0.4 MHz/°C) and stable phase noise under thermal stress.
Does the HMC388LP4 require an external resonator or tuning components?
No, the HMC388LP4 does not require any external resonator, inductor, or tuning capacitor. Its GaAs InGaP HBT die integrates the oscillator core, varactor diode, and resonant structure monolithically. This eliminates external component dependencies, reduces PCB area, and improves reliability-confirmed in the device's "No External Resonator Needed" feature and functional diagram.
What is the recommended power supply decoupling for the HMC388LP4?
The HMC388LP4 requires dual-stage decoupling on the Vcc pin (Pin 20): a 4.7 μF tantalum capacitor and a 10,000 pF (10 nF) ceramic capacitor in parallel, as implemented on the official 105667 evaluation board. This configuration suppresses both low- and high-frequency supply noise that could modulate the VCO or degrade phase noise performance.
How is the RF output of the HMC388LP4 configured, and what interface is needed?
The HMC388LP4 RF output (Pin 16) is AC-coupled and designed for 50 Ω systems. An external DC-blocking capacitor must be placed in series before connecting to mixers, amplifiers, or filters. The evaluation board uses an SMA connector (J1/J2) with controlled 50 Ω microstrip routing, and the exposed paddle must be solidly grounded to maintain output return loss ≥8 dB.
What is the absolute maximum tuning voltage for the HMC388LP4?
The absolute maximum tuning voltage (VTUNE) for the HMC388LP4 is +11 V, as stated in the Absolute Maximum Ratings table. Operation within the recommended 0–10 V range ensures full 3.15–3.4 GHz coverage and avoids potential varactor breakdown or accelerated aging. Exceeding +11 V risks permanent damage to the internal tuning diode.
105706-HMC388LP4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Type:
- Voltage Controlled Oscillator (VCO)
- Frequency:
- 3.15GHz ~ 3.4GHz
- Contents:
- Board(s)
- Utilized IC / Part:
- HMC388LP4
105706-HMC388LP4 FAQ
1.How can I place an order for 105706-HMC388LP4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 105706-HMC388LP4 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 105706-HMC388LP4 reliable?
The price and inventory of 105706-HMC388LP4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 105706-HMC388LP4 is usually 5 days.
3.What payment methods are accepted for 105706-HMC388LP4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 105706-HMC388LP4 transactions.
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4.How is shipping managed for 105706-HMC388LP4?
105706-HMC388LP4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 105706-HMC388LP4 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 105706-HMC388LP4?
For technical support, including 105706-HMC388LP4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 105706-HMC388LP4 requirements.
6.How does Aetrix verify that 105706-HMC388LP4 is sourced from the original manufacturer or authorized distributors?
All 105706-HMC388LP4 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 105706-HMC388LP4 meets industry standards.
7.What is the process for return or replacement of 105706-HMC388LP4?
All 105706-HMC388LP4 units undergo pre-shipment inspection (PSI). If there is an issue with 105706-HMC388LP4, 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 105706-HMC388LP4 part is unused and in its original packaging.
Return procedure for 105706-HMC388LP4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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