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Analog Devices Inc. 105706-HMC384LP4
- Part No.:
- 105706-HMC384LP4
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
105706-HMC384LP4.pdf
- Description:
- EVAL BOARD HMC384LP4
- Quantity:
- Payment:
- Shipping:
Inventory:2,732
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Product details
Overview
HMC384LP4 from Analog Devices (formerly Hittite Microwave) is a GaAs InGaP HBT monolithic voltage-controlled oscillator with integrated buffer amplifier, operating in the 2.05–2.25 GHz range. It delivers +3.5 dBm RF output power at 3 V supply, exhibits −112 dBc/Hz phase noise at 100 kHz offset, and requires no external resonator-enabling compact wireless infrastructure transceivers.
For engineers reviewing the HMC384LP4 datasheet, HMC384LP4 pinout, HMC384LP4 application, or HMC384LP4 equivalent, key selection criteria include its 3.5 dBm output power, −112 dBc/Hz phase noise at 100 kHz, 2.05–2.25 GHz tuning range, 35 mA supply current at 3 V, and QFN-24 leadless SMT package compatibility with RF PCB grounding requirements.
Technical Context
The HMC384LP4 integrates a monolithic oscillator core with varactor tuning, negative resistance devices, and an on-die buffer amplifier-eliminating need for external resonators or output matching networks. Its GaAs InGaP HBT process ensures stable phase noise performance across −40°C to +85°C and under mechanical stress.
It features a 0–10 V tuning voltage range with 5 MHz/V pushing sensitivity and 2.5 MHz peak-to-peak pulling into 2.0:1 VSWR. The 3 V supply operates at 35 mA typical, supporting low-power RF subsystems without external bias sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 2.05–2.25 GHz: Covers full UMTS Band I uplink (1920–1980 MHz) and Band II downlink (2110–2170 MHz) with margin. |
| Output Power | +3.5 dBm typical: Sufficient to drive mixer LO ports or small-signal amplifiers without external gain stages. |
| Phase Noise | −112 dBc/Hz @ 100 kHz offset: Meets stringent spectral purity requirements for 3G/4G base station local oscillators. |
| Tuning Voltage | 0–10 V: Compatible with standard DAC-based PLL loop filters and analog control interfaces. |
| Supply Current | 35 mA @ 3 V: Enables operation from low-noise LDOs in power-constrained RF modules. |
| Harmonics | 2nd: −7 dBc; 3rd: −23 dBc: Reduces need for external harmonic filtering in front-end designs. |
| Package | QFN-24, 4 × 4 mm, exposed paddle: Requires RF ground via array under paddle for optimal thermal and EMI performance. |
Pinout & Package
Package: 4 mm × 4 mm, 24-pin leadless QFN with exposed metal thermal paddle (must be soldered to PCB RF ground). Compliant with MSL1 reflow profile (235 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–14, 17–19, 21, 23–24 | No Connection | Internally unconnected; must remain floating or tied to ground only if required by PCB layout symmetry. |
| 15 | Ground | RF and DC ground reference; connects directly to exposed paddle and system ground plane. |
| 16 | RF Output | AC-coupled 50 Ω output; requires external DC-blocking capacitor before downstream components. |
| 20 | Supply Voltage | 3 V DC input; requires local 4.7 μF tantalum + 10,000 pF ceramic decoupling per evaluation board guidelines. |
| 22 | Tuning Voltage Input | 0–10 V analog control port; bandwidth limited by source impedance-low-Z drivers recommended. |
Key Features
| Feature | Design Value |
|---|---|
| No external resonator required | Monolithic resonator integration reduces BOM count, eliminates alignment sensitivity, and improves shock/vibration tolerance. |
| Integrated buffer amplifier | Isolates oscillator core from load variations, enabling consistent frequency stability and output power across varying VSWR conditions. |
| Low phase noise over temperature | −112 dBc/Hz maintained from −40°C to +85°C due to monolithic GaAs InGaP HBT process and matched device topology. |
| Leadless QFN package | 4 × 4 mm footprint supports high-density RF layouts; exposed paddle enables <1.5°C/W thermal resistance when properly grounded. |
| Single 3 V supply operation | Eliminates need for dual-rail supplies or charge pumps-simplifies power architecture in portable and remote radio units. |
Applications
| Wireless Infrastructure Transceiver | Test Equipment Local Oscillator |
|---|---|
Use Scenario: Used as the primary LO source in macrocell and microcell BTS transceivers operating in 2.1 GHz bands. IC Role / Device Role / Timing Role: Voltage-controlled oscillator providing tunable, low-phase-noise RF carrier synthesis for up/down conversion. Use Value: Delivers −112 dBc/Hz phase noise at 100 kHz offset-meeting 3GPP ACLR requirements without external cleanup PLLs. | Use Scenario: Embedded LO in benchtop signal generators and spectrum analyzers requiring fast frequency settling and low spurious content. IC Role / Device Role / Timing Role: Tunable RF source synchronized to internal reference clock via analog tuning interface. Use Value: 0–10 V tuning range enables precise sweep control; 2.5 MHz pp pulling ensures stable output under variable load conditions. |
| Military Radar Front-End | Industrial Wireless Sensor Hub |
Use Scenario: Frequency-agile LO in compact S-band radar modules deployed in airborne or vehicle-mounted systems. IC Role / Device Role / Timing Role: Monolithic VCO generating agile RF carriers for pulse-Doppler waveform generation. Use Value: Operates reliably from −40°C to +85°C with <0.25 MHz/°C drift-reducing calibration overhead in field-deployed hardware. | Use Scenario: Clock source for narrowband IoT gateways supporting 2.2 GHz ISM band protocols (e.g., IEEE 802.15.4g). IC Role / Device Role / Timing Role: Low-power, integrated VCO driving RF transceiver ICs in battery-operated edge nodes. Use Value: 35 mA supply current at 3 V enables >5-year operation on coin-cell batteries when duty-cycled with sleep-mode control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC384LP4E | RoHS-compliant variant with 100% matte Sn finish and 260 °C MSL1 reflow rating; identical electrical specs. | Required for lead-free manufacturing; same RF performance and pinout as HMC384LP4. | Select HMC384LP4E for new designs targeting RoHS compliance; legacy HMC384LP4 remains viable for Sn/Pb assembly. |
| LMX2594RHBR | Wideband PLL+VCO (10 MHz–15 GHz), integrated fractional-N synthesizer, SPI interface, higher power consumption (120 mA). | Replaces discrete VCO+PLL combos; adds programmability but increases complexity and board area. | Choose LMX2594RHBR when digital frequency agility, fine resolution (<0.1 Hz), or multi-band support are required-HMC384LP4 remains optimal for fixed-band, low-noise analog-tuned systems. |
Compared with HMC384LP4, the HMC384LP4E offers identical RF performance with RoHS-compliant packaging, while the LMX2594RHBR provides programmable wideband synthesis at the cost of higher current draw and design complexity-making HMC384LP4 the preferred choice for cost-sensitive, analog-tuned 2.1 GHz infrastructure applications.
Availability
HMC384LP4 is available at Aetrix Electronics and suitable for wireless infrastructure transceivers, test equipment LO subsystems, and military radar front-ends requiring stable component supply, consistent RF performance, and long-term obsolescence management.
Supply support for HMC384LP4 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, integrating its high-frequency RF MMIC portfolio into ADI's broader signal chain solutions.
The HMC384LP4 belongs to Hittite's legacy MMIC VCO family, designed specifically for analog-tuned, low-phase-noise RF systems in wireless infrastructure and defense applications where monolithic integration and reliability outweigh programmability needs.
FAQ
What is the operating temperature range for the HMC384LP4?
The HMC384LP4 is specified to operate from −40°C to +85°C ambient temperature. Its GaAs InGaP HBT monolithic structure ensures stable phase noise and frequency drift (0.25 MHz/°C) across this full industrial range, making it suitable for outdoor base stations and ruggedized test equipment without thermal compensation circuitry.
Does the HMC384LP4 require external matching components at the RF output?
No, the HMC384LP4 RF output is internally matched to 50 Ω and AC-coupled. The datasheet specifies 6 dB minimum output return loss, confirming adequate broadband match. However, a DC-blocking capacitor is mandatory at Pin 16 (RFOUT) to prevent DC feed-through to downstream components.
What is the maximum allowable tuning voltage for the HMC384LP4?
The absolute maximum tuning voltage (VTUNE) for the HMC384LP4 is +11 V, though the functional range is 0–10 V. Operating above 10 V yields no additional frequency range and risks accelerated varactor degradation; the 10 V upper limit aligns with the specified 2.05–2.25 GHz tuning span.
How should the exposed paddle on the HMC384LP4 QFN package be handled in PCB layout?
The exposed metal paddle on the HMC384LP4 must be soldered to a solid RF ground plane using ≥9 thermal vias (0.3 mm diameter, spaced ≤1 mm apart). Per Hittite Application Note, this ensures <1.5°C/W thermal resistance and minimizes ground inductance-critical for phase noise and output power stability.
Can the HMC384LP4 be used with a 5 V supply instead of 3 V?
No-the HMC384LP4 is rated for absolute maximum VCC of +3.5 V. Supplying 5 V will exceed its absolute maximum rating and cause permanent damage. The device is optimized for 3 V operation (35 mA typical), and its output power, phase noise, and tuning linearity are all characterized only at 3 V.
105706-HMC384LP4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Type:
- Voltage Controlled Oscillator (VCO)
- Frequency:
- 2.05GHz ~ 2.25GHz
- Contents:
- Board(s)
- Utilized IC / Part:
- HMC384LP4
105706-HMC384LP4 FAQ
1.How can I place an order for 105706-HMC384LP4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 105706-HMC384LP4 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-HMC384LP4 reliable?
The price and inventory of 105706-HMC384LP4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 105706-HMC384LP4 is usually 5 days.
3.What payment methods are accepted for 105706-HMC384LP4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 105706-HMC384LP4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 105706-HMC384LP4?
105706-HMC384LP4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 105706-HMC384LP4 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-HMC384LP4?
For technical support, including 105706-HMC384LP4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 105706-HMC384LP4 requirements.
6.How does Aetrix verify that 105706-HMC384LP4 is sourced from the original manufacturer or authorized distributors?
All 105706-HMC384LP4 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-HMC384LP4 meets industry standards.
7.What is the process for return or replacement of 105706-HMC384LP4?
All 105706-HMC384LP4 units undergo pre-shipment inspection (PSI). If there is an issue with 105706-HMC384LP4, 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-HMC384LP4 part is unused and in its original packaging.
Return procedure for 105706-HMC384LP4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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