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Analog Devices Inc. 108648-HMC732LC4B
- Part No.:
- 108648-HMC732LC4B
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
108648-HMC732LC4B.pdf
- Description:
- EVAL BOARD HMC732LC4B
- Quantity:
- Payment:
- Shipping:
Inventory:4,512
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Product details
Overview
HMC732LC4B from Analog Devices (formerly Hittite Microwave) is a wideband monolithic MMIC voltage-controlled oscillator with integrated buffer amplifier, operating from 6 to 12 GHz. It delivers +1 dBm output power, achieves −95 dBc/Hz SSB phase noise at 100 kHz offset, and accepts 0–23 V analog tuning voltage. Designed for RF signal generation in radar and test equipment, it operates from a single +5 V supply at 57 mA.
For engineers reviewing the HMC732LC4B datasheet, HMC732LC4B pinout, HMC732LC4B application, or HMC732LC4B equivalent, key selection criteria include its 6–12 GHz tuning range, low phase noise performance across temperature, RoHS-compliant 4×4 mm ceramic SMT package, and absence of external resonator requirements.
Technical Context
The HMC732LC4B integrates resonator, negative resistance device, and varactor diode on a single GaAs MMIC die, enabling stable oscillation without external tuning elements. Its monolithic construction ensures consistent phase noise and output power over −40 °C to +85 °C.
Tuning sensitivity varies with frequency and voltage-e.g., ~450 MHz/V at 6 GHz and ~250 MHz/V at 12 GHz under +25 °C conditions-and pulling is specified at 7 MHz peak-to-peak into 2.0:1 VSWR load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 6–12 GHz continuous tuning band-supports wideband synthesizer designs without band switching. |
| Output Power | +1 dBm typical-sufficient to drive mixers or prescalers directly without external amplification. |
| SSB Phase Noise @ 100 kHz | −95 dBc/Hz-enables high-fidelity modulation in radar and communications systems. |
| Tuning Voltage Range | 0 to +23 V DC-compatible with standard DAC outputs and analog control circuits. |
| Supply Current | 57 mA @ +5 V-low power consumption suitable for compact, thermally constrained RF modules. |
| Package Size | 4 × 4 × 0.85 mm ceramic SMT-enables dense RF layout with minimal board area impact. |
| Operating Temperature | −40 °C to +85 °C-qualified for industrial, military, and test equipment environments. |
Pinout & Package
Package: 24-lead ceramic LCC (4×4 mm body, alumina substrate, gold-over-nickel plating, MSL3, exposed ground paddle). All ground leads (pins 1–3, 5–11, 13, 16–24) and the bottom paddle must be soldered to RF/DC ground per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–3, 5–11, 13, 16–24 | No Connection | Internally unconnected; may be tied to ground for mechanical stability or EMI shielding without affecting RF performance. |
| 4 | Vtune | Analog tuning input; 0–23 V range enables wide frequency sweep; modulation bandwidth depends on source impedance. |
| 12 | Vcc | +5 V DC supply input; bypassing with 1000 pF (RF) and 4.7 µF (bulk) capacitors required per evaluation board design. |
| 14 | GND | Primary ground terminal; connects to exposed metal paddle-must be soldered to PCB ground plane with multiple vias. |
| 15 | RFOUT | AC-coupled RF output; requires 50 Ω termination and ≤2.0:1 VSWR load from 0.01–14 GHz for stable operation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Resonator & Buffer | Eliminates discrete LC tanks and external buffer stages-reduces component count and layout complexity. |
| Low Phase Noise Architecture | −95 dBc/Hz @ 100 kHz offset supports high-order QAM and pulsed radar applications requiring spectral purity. |
| Single +5 V Supply Operation | Enables direct integration into 5 V system rails without dedicated bias circuitry or regulators. |
| RoHS-Compliant Ceramic Package | 4×4 mm LCC meets lead-free reflow standards (260 °C peak) and provides stable thermal resistance (91 °C/W). |
| Wide Tuning Sensitivity Control | Frequency drift rates of 0.4 MHz/°C @ 6 GHz and 0.25 MHz/°C @ 12 GHz allow predictable thermal compensation. |
Applications
| Radar Frequency Synthesis | Test Equipment Local Oscillator |
|---|---|
Use Scenario: Used as the core VCO in X-band pulse-Doppler radar transceivers requiring rapid frequency agility and low spurious content. IC Role / Device Role / Timing Role: Primary RF signal source generating 8–12 GHz LO signals for upconversion and downconversion. Use Value: Delivers −95 dBc/Hz phase noise at 100 kHz offset, minimizing reciprocal mixing and preserving target resolution. |
Use Scenario: Integrated into broadband signal generators and spectrum analyzers needing fast-tuning, low-noise local oscillators. IC Role / Device Role / Timing Role: Wideband tunable oscillator supporting multi-octave sweep without band-switching hardware. Use Value: 6–12 GHz continuous tuning range eliminates need for multiple VCOs or mechanical switches in lab-grade instruments. |
| Military EW/ECM Systems | Medical Imaging RF Excitation |
Use Scenario: Deployed in electronic warfare jammers requiring rapid frequency hopping across 6–12 GHz to disrupt adversary receivers. IC Role / Device Role / Timing Role: Agile RF source synchronized to digital hop timing controllers via analog Vtune interface. Use Value: 23 V tuning range enables >6 GHz span with linearized control; −65 dBc/Hz @ 10 kHz supports wide instantaneous bandwidth. |
Use Scenario: Generates excitation signals in portable MRI or microwave ablation systems operating near 9.4 GHz. IC Role / Device Role / Timing Role: Stable, low-phase-noise RF source driving antenna arrays or waveguide structures. Use Value: Monolithic construction ensures repeatable performance across temperature swings encountered in clinical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar VCO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC513LP5 | Narrower 4.8–6.0 GHz range; higher +5 dBm output; −105 dBc/Hz @ 100 kHz phase noise. | Better suited for narrowband, high-output applications like point-to-point radios-not wideband agile systems. | Select when output power and close-in phase noise outweigh tuning bandwidth needs. |
| ADF4371 | Integrated PLL+VCO; 6.5–16 GHz; requires external loop filter; consumes 220 mA @ 5.5 V. | Provides full synthesizer functionality but adds design complexity and power overhead versus standalone VCO. | Choose when programmable frequency steps, digital control, and phase synchronization are required. |
Compared with HMC732LC4B, HMC513LP5 trades tuning bandwidth for superior phase noise and output power in a fixed band, while ADF4371 adds synthesis intelligence at the cost of higher current draw and external component dependencies.
Availability
HMC732LC4B is available at Aetrix Electronics and suitable for radar front-ends, test instrumentation, and electronic warfare subsystems requiring stable component supply and guaranteed long-term availability.
Supply support for HMC732LC4B 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 portfolio, including MMIC VCOs, amplifiers, and mixers for defense and instrumentation markets.
The HMC732LC4B belongs to Hittite's wideband MMIC VCO family, designed specifically for applications demanding wide tuning range, low phase noise, and compact SMT integration without external resonators.
FAQ
What is the recommended power supply decoupling for HMC732LC4B?
HMC732LC4B requires dual-stage decoupling on the Vcc pin (pin 12): a 1000 pF 0402 capacitor for RF bypassing and a 4.7 µF tantalum capacitor for bulk filtering. The evaluation board (108648) implements this configuration with direct connection to the ground paddle via multiple vias. Proper decoupling minimizes supply-induced phase noise degradation and ensures stable oscillation across the 6–12 GHz band.
Does HMC732LC4B require an external resonator or tuning components?
No, HMC732LC4B does not require an external resonator or tuning components. Its monolithic GaAs MMIC structure integrates the resonator, negative resistance device, and varactor diode. This eliminates discrete LC tank design, reduces layout sensitivity, and improves temperature stability-key advantages confirmed in the functional diagram and general description of the HMC732LC4B datasheet.
What is the maximum allowable Vtune voltage for HMC732LC4B?
The absolute maximum rating for Vtune is +25 V, with recommended operating range of 0 to +23 V. Exceeding +25 V risks permanent damage. At +23 V, tune port leakage current is specified at ≤10 µA, confirming robust varactor integrity within this range. Operation below 0 V (down to −1 V) is permitted but not recommended for normal tuning use.
How is thermal management handled for HMC732LC4B in high-density layouts?
HMC732LC4B features an exposed ground paddle with thermal resistance of 91 °C/W (junction to ground paddle). Effective thermal management requires soldering all ground pins and the paddle to a solid PCB ground plane using multiple thermal vias. The datasheet specifies a nominal junction temperature of 110 °C at +85 °C ambient, confirming suitability for conduction-cooled RF modules when properly mounted.
Is HMC732LC4B compatible with standard PCB assembly processes?
Yes, HMC732LC4B is rated MSL3 and qualified for lead-free reflow with a peak temperature of 260 °C. Its 4×4 mm ceramic LCC package uses gold-over-nickel lead finish and alumina body, ensuring compatibility with standard SMT lines. The outline drawing and package marking details (H732 + 4-digit lot code) support automated optical inspection and traceability in production environments.
108648-HMC732LC4B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Type:
- Voltage Controlled Oscillator (VCO)
- Frequency:
- 6GHz ~ 12GHz
- Contents:
- Board(s)
- Utilized IC / Part:
- HMC732LC4B
108648-HMC732LC4B FAQ
1.How can I place an order for 108648-HMC732LC4B through Aetrix?
Please submit a Request for Quotation (RFQ) for 108648-HMC732LC4B 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 108648-HMC732LC4B reliable?
The price and inventory of 108648-HMC732LC4B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 108648-HMC732LC4B is usually 5 days.
3.What payment methods are accepted for 108648-HMC732LC4B?
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4.How is shipping managed for 108648-HMC732LC4B?
108648-HMC732LC4B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 108648-HMC732LC4B 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 108648-HMC732LC4B?
For technical support, including 108648-HMC732LC4B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 108648-HMC732LC4B requirements.
6.How does Aetrix verify that 108648-HMC732LC4B is sourced from the original manufacturer or authorized distributors?
All 108648-HMC732LC4B 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 108648-HMC732LC4B meets industry standards.
7.What is the process for return or replacement of 108648-HMC732LC4B?
All 108648-HMC732LC4B units undergo pre-shipment inspection (PSI). If there is an issue with 108648-HMC732LC4B, 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 108648-HMC732LC4B part is unused and in its original packaging.
Return procedure for 108648-HMC732LC4B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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