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Analog Devices Inc. 105706-HMC389LP4
- Part No.:
- 105706-HMC389LP4
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
105706-HMC389LP4.pdf
- Description:
- EVAL BOARD HMC389LP4
- Quantity:
- Payment:
- Shipping:
Inventory:3,207
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Product details
Overview
105706-HMC389LP4 from Analog Devices (formerly Hittite Microwave) is a GaAs InGaP HBT MMIC voltage-controlled oscillator with integrated buffer amplifier, operating from 3.35 to 3.55 GHz. It delivers +4.7 dBm RF output power at 3 V/41 mA, achieves −112 dBc/Hz SSB phase noise at 100 kHz offset, and requires no external resonator. It serves as a low-noise local oscillator in microwave radio transceivers.
For engineers reviewing the 105706-HMC389LP4 datasheet, 105706-HMC389LP4 pinout, 105706-HMC389LP4 application, or 105706-HMC389LP4 equivalent, key selection criteria include tuning voltage range (0–10 V), pulling tolerance (3.3 MHz pp into 2.0:1 VSWR), pushing sensitivity (−3 MHz/V), frequency drift rate (0.4 MHz/°C), and QFN-16 package compatibility with RF ground plane layout requirements.
Technical Context
The 105706-HMC389LP4 integrates monolithic resonator, negative resistance devices, varactor diodes, and a buffer amplifier on a single GaAs die, enabling stable oscillation without external tuning components. Its monolithic architecture ensures robust phase noise performance across temperature (−40°C to +85°C), shock, and vibration.
It operates from a single 3 V supply with 41 mA typical current draw and features a 16-pin QFN package with exposed paddle for RF grounding. The VTUNE port accepts 0–10 V control voltage, while RFOUT is AC-coupled and requires 50 Ω termination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 3.35–3.55 GHz - fixed-band VCO suitable for 3.5 GHz wireless infrastructure channels. |
| Output Power | +4.7 dBm typical - sufficient to drive mixer LO ports without external amplification in compact RF designs. |
| Phase Noise | −112 dBc/Hz @ 100 kHz offset - meets stringent spectral purity requirements for VSAT and microwave radio links. |
| Tuning Voltage | 0–10 V - enables wide-range frequency adjustment using standard DAC or analog control circuitry. |
| Supply Current | 41 mA @ 3 V - low power consumption supports battery-aware or thermally constrained RF subsystems. |
| Output Return Loss | 6 dB minimum - indicates moderate impedance match; requires external matching network for optimal 50 Ω interface. |
| Harmonics | 2nd: −7 dBc, 3rd: −16 dBc - mandates filtering before antenna or mixer input to avoid spurious emissions. |
Pinout & Package
105706-HMC389LP4 is housed in a leadless 4×4 mm QFN package (16-pin, MSL1, Sn/Pb finish) with exposed thermal paddle requiring solder connection to PCB RF ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–14, 17–19, 21, 23–24 | No Connection | Internally unconnected; must remain floating or tied to ground per layout guidelines. |
| 15 | GND | RF and DC ground reference; connects directly to PCB ground plane via multiple vias. |
| 16 | RFOUT | AC-coupled RF output; requires series DC-blocking capacitor and 50 Ω load or trace impedance. |
| 20 | Vcc | +3 V supply input; bypassed with 4.7 μF tantalum and 10,000 pF ceramic capacitors per evaluation board. |
| 22 | VTUNE | 0–10 V analog tuning port; bandwidth limited by source impedance; sensitive to noise coupling. |
| Package Bottom | Exposed Paddle | Mandatory RF/DC ground connection; insufficient soldering causes degraded phase noise and output power. |
Key Features
| Feature | Design Value |
|---|---|
| No external resonator required | Monolithic resonator integration eliminates discrete inductor/capacitor tuning networks and reduces BOM count. |
| Integrated buffer amplifier | Isolates oscillator core from load variations, improving pulling stability and enabling direct drive of mixers. |
| Low phase noise over temperature | −112 dBc/Hz @ 100 kHz maintained from −40°C to +85°C due to monolithic GaAs HBT process consistency. |
| ESD robustness | Class 1A HBM rating (per JEDEC JS-001); requires handling precautions but supports production assembly. |
| QFN-16 surface-mount package | 4×4 mm footprint with exposed paddle enables high-density RF layout and efficient thermal dissipation. |
Applications
| Wireless Local Loop (WLL) | VSAT Terminals |
|---|---|
Use Scenario: Fixed wireless access base stations operating in 3.5 GHz licensed band. IC Role / Device Role / Timing Role: Local oscillator for up/down-conversion in transceiver front-end. Use Value: Stable 3.35–3.55 GHz output with low phase noise ensures <1% EVM degradation in 256-QAM modulation under thermal cycling. |
Use Scenario: Outdoor satellite terminal transceivers requiring high reliability in harsh environments. IC Role / Device Role / Timing Role: Frequency-agile LO source synchronized to reference clock for LNB downconversion. Use Value: Monolithic construction maintains phase noise and tuning linearity across −40°C to +85°C, eliminating field recalibration. |
| Microwave Point-to-Point Radio | Test Equipment Signal Sources |
Use Scenario: 5 km backhaul radios compliant with ETSI EN 302 217. IC Role / Device Role / Timing Role: Tunable LO generating carrier frequencies within 3.4–3.6 GHz band. Use Value: 0.4 MHz/°C drift rate and −3 MHz/V pushing enable precise frequency locking with minimal loop filter complexity. |
Use Scenario: Benchtop RF signal generators requiring fast-tuning, low-spur local oscillators. IC Role / Device Role / Timing Role: Core VCO in synthesizer PLL loop for agile frequency generation. Use Value: −7 dBc 2nd harmonic and −16 dBc 3rd harmonic simplify post-VCO filtering versus discrete solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC513LP5 | Wider tuning range (3.2–3.8 GHz), higher output (+6.5 dBm), larger 5×5 mm QFN package. | Better suited for multi-band systems requiring >500 MHz span; higher power eases drive margin but increases heat density. | Select when wider frequency agility or higher output is needed; verify PCB land pattern and thermal pad rework compatibility. |
| LMX2594RHAR | Wideband PLL+VCO IC (10 MHz–15 GHz), integrated fractional-N synthesizer, SPI programmable, 3.3 V supply. | Replaces discrete VCO+PLL design; adds digital control, jitter cleaning, and multi-channel synchronization capability. | Choose when system-level flexibility, frequency resolution, or phase alignment across multiple LOs is required over analog tuning simplicity. |
Compared with HMC513LP5 and LMX2594RHAR, the 105706-HMC389LP4 offers lowest phase noise in its narrow 200 MHz band and smallest footprint, making it optimal for cost-sensitive, size-constrained microwave radios where fixed-band operation suffices.
Availability
105706-HMC389LP4 is available at Aetrix Electronics and suitable for wireless local loop infrastructure, VSAT terminals, and microwave point-to-point radio systems requiring stable component supply, consistent RF performance, and long-term obsolescence management.
Supply support for 105706-HMC389LP4 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 105706-HMC389LP4 belongs to Hittite's legacy VCOS & PLOs family-designed specifically for microwave radio, satellite communications, and instrumentation applications demanding low phase noise and monolithic reliability.
FAQ
What is the operating temperature range for the 105706-HMC389LP4?
The 105706-HMC389LP4 is specified for continuous operation from −40°C to +85°C ambient temperature. Electrical parameters-including phase noise, output power, and tuning sensitivity-are guaranteed across this full range. The monolithic GaAs HBT structure ensures stable performance without calibration drift, making the 105706-HMC389LP4 suitable for outdoor microwave radio and military-grade deployments.
Does the 105706-HMC389LP4 require external tuning components?
No, the 105706-HMC389LP4 does not require external resonators, inductors, or varactors. Its monolithic design integrates the resonator, negative resistance devices, and varactor diodes on a single GaAs die. Only passive decoupling (4.7 μF tantalum + 10,000 pF ceramic) on Vcc and a DC-blocking capacitor on RFOUT are required per the evaluation board layout.
What is the recommended PCB grounding strategy for the 105706-HMC389LP4?
The 105706-HMC389LP4 requires direct connection of all GND pins (Pin 15) and the exposed bottom paddle to a solid RF ground plane using multiple thermal vias. Per Hittite Application Note, ≥8 vias (0.3 mm diameter) should connect the paddle to inner/outer ground layers. Signal traces must maintain 50 Ω impedance, and RFOUT must be AC-coupled with controlled-impedance routing to prevent return loss degradation.
How does the 105706-HMC389LP4 handle load pulling?
The 105706-HMC389LP4 exhibits 3.3 MHz peak-to-peak frequency shift when presented with a 2.0:1 VSWR mismatch at RFOUT-enabled by its integrated buffer amplifier. This pulling specification is measured at Vtune = +5 V and TA = +25°C. For critical LO stability, a directional coupler or isolator may be added between RFOUT and downstream stages to further suppress load-induced frequency modulation.
Is the 105706-HMC389LP4 RoHS-compliant?
The 105706-HMC389LP4 uses Sn/Pb lead finish and is not RoHS-compliant. Its RoHS-compliant variant is the HMC389LP4E (matte Sn, MSL1, 260°C reflow). Both share identical electrical specifications and pinout, but the 105706-HMC389LP4 requires 235°C max peak reflow profile and is intended for legacy or military applications where Pb-containing finishes are permitted.
105706-HMC389LP4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Type:
- Voltage Controlled Oscillator (VCO)
- Frequency:
- 3.35GHz ~ 3.55GHz
- Contents:
- Board(s)
- Utilized IC / Part:
- HMC389LP4
105706-HMC389LP4 FAQ
1.How can I place an order for 105706-HMC389LP4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 105706-HMC389LP4 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-HMC389LP4 reliable?
The price and inventory of 105706-HMC389LP4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 105706-HMC389LP4 is usually 5 days.
3.What payment methods are accepted for 105706-HMC389LP4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 105706-HMC389LP4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 105706-HMC389LP4?
105706-HMC389LP4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 105706-HMC389LP4 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-HMC389LP4?
For technical support, including 105706-HMC389LP4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 105706-HMC389LP4 requirements.
6.How does Aetrix verify that 105706-HMC389LP4 is sourced from the original manufacturer or authorized distributors?
All 105706-HMC389LP4 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-HMC389LP4 meets industry standards.
7.What is the process for return or replacement of 105706-HMC389LP4?
All 105706-HMC389LP4 units undergo pre-shipment inspection (PSI). If there is an issue with 105706-HMC389LP4, 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-HMC389LP4 part is unused and in its original packaging.
Return procedure for 105706-HMC389LP4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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