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Analog Devices Inc. HMC265
- Part No.:
- HMC265
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- Die
- Datasheet:
-
HMC265.pdf
- Description:
- IC MIXER SUB-HARMONIC DIE
- Quantity:
- Payment:
- Shipping:
Inventory:100
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Product details
Overview
HMC265LM3 from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC sub-harmonically pumped (×2) downconverter mixer operating from 20–31 GHz RF, 10–15.5 GHz LO, and 0.7–3 GHz IF, with integrated LO amplifier requiring only –4 dBm drive, 28–47 dB 2LO-to-RF/IF isolation, and +3V to +4V single-supply operation - ideal for microwave radio downconversion in LMDS and SATCOM systems.
For engineers reviewing the HMC265LM3 datasheet, HMC265LM3 pinout, HMC265LM3 application, or HMC265LM3 equivalent, this page delivers verified RF mixer specifications, LM3 package terminal mapping, sub-harmonic pumping architecture details, isolation performance across temperature, and real-world design constraints for millimeter-wave SMT integration.
Technical Context
The HMC265LM3 implements a monolithic GaAs-based sub-harmonic (×2) mixing architecture where the LO input at half the RF frequency enables relaxed LO source requirements and eliminates fundamental LO leakage into RF and IF paths. Its integrated two-stage LO amplifier operates from a single +3V to +4V supply and delivers sufficient gain to drive the mixer core with only –4 dBm input.
High 2LO-to-RF isolation (28–35 dB typical) and 2LO-to-IF isolation (47 dB typical) are achieved through on-chip balun and layout symmetry, reducing external filtering needs. All RF, LO, and IF ports are AC-coupled and 50 Ω matched across their respective bands, supporting direct integration into grounded coplanar waveguide PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 20–31 GHz - supports full E-band point-to-point radio links without band segmentation |
| LO Frequency Range | 10–15.5 GHz - enables use of lower-cost, mature Ku-band synthesizers for E-band conversion |
| IF Frequency Range | 0.7–3 GHz - compatible with standard IF filters, ADCs, and baseband processors |
| Conversion Gain | –2 to +4 dB (typ.) - provides net gain or low-loss downconversion without external IF amplification |
| Noise Figure (SSB) | 13 dB (typ.) - defines system sensitivity limit in high-frequency receiver front-ends |
| 2LO-to-RF Isolation | 28–35 dB (min–typ.) - suppresses LO harmonic feedthrough, minimizing image interference |
| Input IP3 | 6–10 dBm (typ.) - determines third-order intermodulation handling in multi-carrier microwave systems |
| Supply Current (Idd) | 40–50 mA @ +3V to +4V - enables low-power biasing with standard DC-DC converters |
Pinout & Package
The HMC265LM3 is housed in a non-hermetic, epoxy-sealed LM3 leadless chip carrier package (3.0 × 3.0 × 0.1 mm), designed for grounded coplanar waveguide PCB transitions and compatible with standard SMT reflow profiles up to 235°C peak for 15 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | No Connect (N/C) | May be tied to housing ground or left floating; no internal connection to die |
| 3 | Vdd | +3V to +4V supply for integrated LO amplifier; requires 100–330 pF RF bypass capacitor adjacent to pin |
| 4 | RF | AC-coupled 50 Ω RF input port, matched from 20–30 GHz; connects directly to antenna or filter output |
| 5 | IF | AC-coupled 50 Ω IF output port, matched from 0.7–3 GHz; interfaces to IF amplifier or demodulator |
| 6 | LO | AC-coupled 50 Ω LO input port, matched from 10–15 GHz; accepts sub-harmonic drive for ×2 mixing |
| 7 | GND | RF ground terminal; must be soldered to PCB ground plane with multiple vias per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Sub-harmonic (×2) pumping | Enables use of 10–15.5 GHz LO sources to cover 20–31 GHz RF band, lowering synthesizer cost and complexity |
| Integrated LO amplifier | Eliminates external driver stage; accepts –4 dBm LO input and operates from single +3V/+4V supply |
| High 2LO-to-RF/IF isolation | 28–47 dB measured isolation reduces need for external diplexers or harmonic filters in compact radios |
| LM3 SMT package | 3.0 × 3.0 mm leadless ceramic package with ground-signal-ground (GSG) terminal layout optimized for CPWG probing and production assembly |
| AC-coupled 50 Ω ports | All RF, LO, and IF ports are internally matched and DC-blocked, simplifying interface design and eliminating external coupling capacitors |
Applications
| 20–31 GHz Microwave Radios | Point-to-Point Downconverter |
|---|---|
Use Scenario: High-capacity backhaul links operating in E-band (71–76 GHz and 81–86 GHz) using frequency translation architectures. IC Role / Device Role / Timing Role: Downconverter mixer translating 24–29.5 GHz RF signals to 2–3 GHz IF for digitization and demodulation. Use Value: Sub-harmonic pumping allows low-phase-noise 12–14.75 GHz LO synthesis, improving adjacent channel rejection and spectral purity. |
Use Scenario: Compact outdoor unit (ODU) in licensed fixed wireless access systems requiring minimal BOM and thermal footprint. IC Role / Device Role / Timing Role: Core RF-to-IF conversion element in dual-conversion receiver front-end, interfacing with LNA and IF amplifier. Use Value: Integrated LO amplifier and >28 dB 2LO-to-RF isolation eliminate discrete driver and filter stages, reducing PCB area by ≥35%. |
| LMDS Base Station | SATCOM Ground Terminal |
Use Scenario: Local Multipoint Distribution Service transceivers delivering broadband last-mile connectivity in 27.5–29.5 GHz band. IC Role / Device Role / Timing Role: Final-stage downconverter in receive chain, converting RF to intermediate frequency prior to channel selection. Use Value: 13 dB noise figure and +4 dB conversion gain maintain link budget margin under rain fade conditions. |
Use Scenario: Mobile or transportable satellite communication terminals operating in 27.5–31 GHz Ka-band downlink. IC Role / Device Role / Timing Role: First downconversion stage translating Ka-band signals to L-band or C-band IF for further processing. Use Value: 0.7–3 GHz IF bandwidth supports wide instantaneous bandwidths required for high-throughput DVB-S2X modulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sub-harmonic mixer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC1048LP4E | Wider RF range (17–44 GHz), higher LO drive (+3 dBm), no integrated LO amp, QFN-24 package | Requires external LO driver; suited for lab-grade test equipment over production radios | Select when broader frequency coverage and higher LO power tolerance outweigh integration benefits |
| Qorvo QM11024 | 20–32 GHz RF, –5 dBm LO drive, 2LO-to-RF isolation 25 dB (typ.), 4×4 mm QFN package | Lower isolation and no integrated LO amp necessitate additional filtering and driver circuitry | Select when Qorvo's supply chain continuity or qualification for aerospace environments is prioritized |
Compared with HMC265LM3, the HMC1048LP4E offers extended bandwidth but increases system complexity with external LO drive, while the QM11024 trades isolation and integration for alternate sourcing - making HMC265LM3 optimal for cost-sensitive, high-volume E-band radio designs requiring minimal external components.
Availability
HMC265LM3 is available at Aetrix Electronics and suitable for 20–31 GHz microwave radios, point-to-point downconverters, and LMDS/SATCOM ground terminals requiring stable component supply, consistent LM3 package delivery, and traceable GaAs MMIC sourcing.
Supply support for HMC265LM3 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, Inc. (including former Hittite Microwave) is a global leader in high-performance analog, RF, and microwave ICs, specializing in signal conditioning, RF front-ends, and millimeter-wave solutions for communications and defense.
The HMC265LM3 belongs to Analog Devices' legacy Hittite MMIC mixer product line, engineered specifically for E-band wireless infrastructure where sub-harmonic mixing, integration, and SMT manufacturability are critical design requirements.
FAQ
What is the recommended LO drive level for optimal performance of the HMC265LM3?
The HMC265LM3 achieves best conversion gain and IP3 performance with –4 dBm LO drive at +4V supply. At this level, typical conversion gain reaches +4 dB and input IP3 is 10 dBm. Reducing LO drive to –6 dBm degrades gain by ~1.5 dB and IP3 by ~2 dB; exceeding –2 dBm risks compression and increased distortion. The HMC265LM3's integrated LO amplifier ensures consistent operation across this range without external driver stages.
Does the HMC265LM3 require external matching components at its RF, LO, or IF ports?
No - the HMC265LM3 features fully integrated 50 Ω AC-coupled matching networks on all RF, LO, and IF ports across their rated bands (20–30 GHz, 10–15 GHz, and 0.7–3 GHz respectively). No external baluns, transformers, or series/shunt matching elements are needed. Layout best practice requires proper CPWG grounding and via placement per the LM3 land pattern, but no discrete matching components are specified in the datasheet or evaluation board design.
What is the operating temperature range and thermal derating specification for the HMC265LM3?
The HMC265LM3 is rated for continuous operation from –40°C to +85°C ambient. Absolute maximum junction temperature is limited by power dissipation: at +85°C, max continuous power dissipation is 227 mW; above that temperature, dissipation must be derated at 2.52 mW/°C. Typical Idd is 50 mA at +4V, yielding ~200 mW dissipation - within safe limits across the full industrial temperature range without forced cooling.
Can the HMC265LM3 be used in an upconversion configuration?
No - the HMC265LM3 is characterized and specified exclusively as a downconverter (RF → IF). Its internal architecture, biasing, and port matching are optimized for RF input and IF output. While theoretical reciprocity exists in passive mixers, the integrated LO amplifier, asymmetric port terminations, and published S-parameter data confirm unidirectional downconversion use only. Upconversion applications require dedicated active upconverters such as the HMC774A.
Is the LM3 package of the HMC265LM3 compatible with standard reflow soldering processes?
Yes - the HMC265LM3 LM3 package is qualified for standard lead-free reflow soldering with a peak temperature of 235°C for ≤15 seconds. The recommended profile includes controlled ramp rates, preheat, and soak phases to prevent thermal shock. Hand soldering and conductive epoxy attachment are explicitly discouraged in the datasheet due to risk of mechanical damage and RF performance degradation.
HMC265 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Bulk
- Product Status:
- Active
- RF Type:
- General Purpose
- Frequency:
- 20GHz ~ 32GHz
- Number of Mixers:
- 1
- Gain:
- -
- Noise Figure:
- 10dB
- Secondary Attributes:
- -
- Current - Supply:
- 28mA
- Voltage - Supply:
- 3V ~ 4V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
HMC265 FAQ
1.How can I place an order for HMC265 through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC265 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 HMC265 reliable?
The price and inventory of HMC265 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC265 is usually 5 days.
3.What payment methods are accepted for HMC265?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC265 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC265?
HMC265 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC265 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 HMC265?
For technical support, including HMC265 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC265 requirements.
6.How does Aetrix verify that HMC265 is sourced from the original manufacturer or authorized distributors?
All HMC265 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 HMC265 meets industry standards.
7.What is the process for return or replacement of HMC265?
All HMC265 units undergo pre-shipment inspection (PSI). If there is an issue with HMC265, 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 HMC265 part is unused and in its original packaging.
Return procedure for HMC265:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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