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Analog Devices Inc. 123815-HMC751LC4
- Part No.:
- 123815-HMC751LC4
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
123815-HMC751LC4.pdf
- Description:
- EVAL BOARD HMC751LC4
- Quantity:
- Payment:
- Shipping:
Inventory:1,334
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Product details
Overview
HMC751LC4 from Analog Devices (formerly Hittite Microwave) is a GaAs pHEMT MMIC low-noise amplifier operating from 17 to 27 GHz, delivering 25 dB small-signal gain, 2.2 dB noise figure, and +25 dBm output IP3. It functions as both an LNA and LO driver for balanced/I/Q/image-reject mixers in microwave radio front-ends.
For engineers reviewing the HMC751LC4 datasheet, HMC751LC4 pinout, HMC751LC4 application, or HMC751LC4 equivalent, key selection criteria include its 4 V single-supply operation at 73 mA, 50 Ω input/output matching, RoHS-compliant 4 × 4 mm alumina package, and suitability for high-frequency point-to-point and military RF systems.
Technical Context
The HMC751LC4 employs a monolithic GaAs pHEMT process with three independent drain supply pins (Vdd1–Vdd3) enabling stable biasing across temperature. Its broadband 17–27 GHz operation covers E-band sub-bands used in high-capacity wireless backhaul.
Input and output are AC-coupled and internally matched to 50 Ω, eliminating external matching networks. Gain variation is tightly controlled at 0.025 dB/°C, and thermal resistance is 89 °C/W from channel to ground paddle-critical for sustained RF performance in compact enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 17–27 GHz - Covers full E-band (U-NII-4, IEEE 802.11ad/ay), suitable for 23/26 GHz licensed point-to-point links. |
| Small-Signal Gain | 25 dB typical - Enables single-stage amplification without cascading, reducing system noise figure and component count. |
| Noise Figure | 2.2 dB typical - Supports high-sensitivity receivers in low-SNR environments such as satellite VSAT and radar front-ends. |
| OIP3 | +25 dBm typical - Provides robust linearity for multi-carrier signals in dense spectral deployments. |
| P1dB Output Power | +13 dBm typical - Sufficient to drive balanced mixers directly, eliminating need for separate LO buffer stages. |
| Supply Voltage / Current | +4 V @ 73 mA - Single-rail operation simplifies power delivery; current draw enables thermal design with ≤85 °C case temperature. |
| Package | 4 × 4 mm RoHS-compliant alumina SMT - Leadless, gold-over-nickel finish; MSL3 rating supports standard reflow assembly. |
Pinout & Package
RoHS-compliant 4 × 4 mm leadless surface-mount package with alumina body and exposed ground paddle. All ground pins (1, 3, 5–7, 12–14, 16, 18, 19, 24) and the bottom paddle must be soldered to PCB RF ground per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5–7, 12–14, 16, 18, 19, 24 | GND | RF/DC ground connections - mandatory for signal integrity and thermal dissipation; requires direct via connection to internal ground plane. |
| 2, 8–11, 17, 23 | N/C | No-connect - may be grounded without performance impact; no internal circuitry attached. |
| 4 | RFIN | AC-coupled 50 Ω RF input - accepts differential or single-ended drive; no external matching required. |
| 15 | RFOUT | AC-coupled 50 Ω RF output - delivers amplified signal with minimal group delay variation across band. |
| 20, 21, 22 | Vdd1, Vdd2, Vdd3 | Independent drain supply inputs - each requires local bypassing (100 pF, 1 nF, 2.2 µF) to suppress supply noise and ensure stability. |
Key Features
| Feature | Design Value |
|---|---|
| High Dynamic Range | +25 dBm OIP3 and +13 dBm P1dB enable simultaneous reception of weak and strong signals without compression or intermodulation. |
| Temperature-Stable Gain | 0.025 dB/°C variation ensures consistent link budget over –40 to +85 °C operating range-no recalibration needed in outdoor radios. |
| Integrated 50 Ω Matching | Eliminates discrete matching components at RF ports, reducing board area, insertion loss, and assembly cost in E-band modules. |
| Low Thermal Resistance | 89 °C/W channel-to-paddle thermal path allows reliable operation at full RF power without external heatsinking in most PCB layouts. |
| MSL3 Reflow Compatibility | Rated for peak reflow up to 260 °C - compatible with standard lead-free assembly processes without special handling. |
Applications
| Point-to-Point Radios | VSAT Terminals |
|---|---|
Use Scenario: 23 GHz licensed backhaul link between cell towers with <1 km spacing and high rain fade margin. IC Role / Device Role / Timing Role: Front-end LNA boosting received signal prior to downconversion; also drives LO port of image-reject mixer. Use Value: 2.2 dB NF preserves receiver sensitivity; +13 dBm P1dB eliminates need for external LO buffer, reducing BOM and footprint. |
Use Scenario: Ku-band VSAT outdoor unit receiving low-power satellite signals under variable thermal conditions. IC Role / Device Role / Timing Role: First-stage LNA in receive chain, operating continuously across –40 to +85 °C ambient. Use Value: 0.025 dB/°C gain drift maintains consistent gain control loop performance; 50 Ω match simplifies integration with waveguide-to-microstrip transitions. |
| Military Radar Receivers | Test & Measurement Equipment |
Use Scenario: X-band pulse-Doppler radar front-end requiring fast settling, low phase noise, and high spurious-free dynamic range. IC Role / Device Role / Timing Role: Low-noise pre-amplifier before high-speed ADC sampling stage; operates in pulsed bias mode. Use Value: +25 dBm OIP3 prevents intermodulation distortion from clutter returns; 17–27 GHz bandwidth supports wide instantaneous IF capture. |
Use Scenario: Vector network analyzer receiver module requiring calibrated, repeatable gain and noise performance across frequency sweep. IC Role / Device Role / Timing Role: Reference gain block in calibration path; used with precision attenuators and couplers. Use Value: Tight gain tolerance (±1 dB) and stable NF enable traceable uncertainty budgets; RoHS package supports lab-grade reworkability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC1099LP4E | Wider 10–35 GHz range; higher 3.0 dB NF; +23 dBm OIP3; same 4 × 4 mm package. | Better suited for multi-band test equipment; less optimal for fixed 23 GHz radios due to higher NF. | Select HMC1099LP4E when broader frequency coverage outweighs 0.8 dB NF penalty. |
| Qorvo QPL9547 | 20–30 GHz range; 1.8 dB NF; +22 dBm OIP3; 2.5 × 2.5 mm package; requires external matching. | Smaller footprint but demands RF layout expertise; lower NF benefits ultra-sensitive receivers. | Choose QPL9547 only if board space is constrained and matching network design resources are available. |
Compared with HMC1099LP4E and QPL9547, the HMC751LC4 offers the best balance of NF (2.2 dB), OIP3 (+25 dBm), and ease of integration (fully matched, no external tuning) for dedicated 17–27 GHz infrastructure radios.
Availability
HMC751LC4 is available at Aetrix Electronics and suitable for point-to-point radios, VSAT terminals, and military radar receivers requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for HMC751LC4 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 Communications & RF Solutions division.
The HMC751LC4 belongs to Hittite's legacy pHEMT MMIC amplifier family, designed specifically for E-band wireless infrastructure, defense EW systems, and precision instrumentation where broadband LNA performance is critical.
FAQ
What is the operating temperature range for the HMC751LC4?
The HMC751LC4 is specified to operate from –40 °C to +85 °C ambient temperature. Its GaAs pHEMT process and thermal design (89 °C/W channel-to-paddle resistance) ensure stable gain, noise figure, and linearity across this full industrial range without derating. The absolute maximum channel temperature is 175 °C, supporting short-term transient conditions.
Does the HMC751LC4 require external matching components?
No-the HMC751LC4 features fully integrated 50 Ω input and output matching. RFIN (Pin 4) and RFOUT (Pin 15) are AC-coupled and impedance-matched internally, eliminating the need for external baluns, stubs, or lumped-element networks. This reduces PCB area, insertion loss, and design iteration time in E-band layouts.
Can the HMC751LC4 be used as an LO driver?
Yes-the HMC751LC4's +13 dBm P1dB output power and +25 dBm OIP3 make it suitable as an LO driver for balanced, I/Q, or image-reject mixers. Its broadband 17–27 GHz response ensures flat drive level across common LO frequencies in microwave transceivers, reducing the need for additional buffer stages.
What are the recommended bypass capacitors for the HMC751LC4 supply pins?
Each Vdd pin (20, 21, 22) requires three parallel bypass capacitors: 100 pF (0402), 1,000 pF (0603), and 2.2 µF (tantalum). These values suppress noise across RF, switching, and low-frequency bands. The 100 pF capacitor must be placed closest to the pin; all ground connections must route directly to the exposed paddle or adjacent GND vias.
Is the HMC751LC4 pin-compatible with other Hittite 4 × 4 mm LNAs?
No documented pin-compatible replacements exist within the Hittite/ADI portfolio for the HMC751LC4. While packages share the 4 × 4 mm outline, pin functions-including three independent Vdd inputs and specific ground pin distribution-are unique to this part. Layout reuse requires verification against the exact HMC751LC4 pin map and thermal pad requirements.
123815-HMC751LC4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Type:
- Amplifier
- Frequency:
- 17GHz ~ 27GHz
- Contents:
- Board(s)
- Utilized IC / Part:
- HMC751LC4
123815-HMC751LC4 FAQ
1.How can I place an order for 123815-HMC751LC4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 123815-HMC751LC4 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 123815-HMC751LC4 reliable?
The price and inventory of 123815-HMC751LC4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 123815-HMC751LC4 is usually 5 days.
3.What payment methods are accepted for 123815-HMC751LC4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 123815-HMC751LC4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 123815-HMC751LC4?
123815-HMC751LC4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 123815-HMC751LC4 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 123815-HMC751LC4?
For technical support, including 123815-HMC751LC4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 123815-HMC751LC4 requirements.
6.How does Aetrix verify that 123815-HMC751LC4 is sourced from the original manufacturer or authorized distributors?
All 123815-HMC751LC4 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 123815-HMC751LC4 meets industry standards.
7.What is the process for return or replacement of 123815-HMC751LC4?
All 123815-HMC751LC4 units undergo pre-shipment inspection (PSI). If there is an issue with 123815-HMC751LC4, 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 123815-HMC751LC4 part is unused and in its original packaging.
Return procedure for 123815-HMC751LC4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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