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Analog Devices Inc. HMC265LM3TR
- Part No.:
- HMC265LM3TR
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- 6-TQFN Exposed Pad
- Datasheet:
-
HMC265LM3TR.pdf
- Description:
- IC MMIC MIXER 20-31GHZ 6SMD
- Quantity:
- Payment:
- Shipping:
Inventory:4,949
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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 3 dB typical conversion gain - ideal for microwave radio downconversion in LMDS and SATCOM systems.
For engineers reviewing the HMC265LM3 datasheet, HMC265LM3 pinout, HMC265LM3 application, or HMC265LM3 equivalent, key selection criteria include its sub-harmonic pumping architecture, LM3 leadless SMT package, +3V to +4V single-supply LO amplifier bias, 50 Ω matched RF/IF/LO ports, and millimeter-wave isolation performance critical for high-frequency receiver front-ends.
Technical Context
The HMC265LM3 implements a sub-harmonic (×2) mixing architecture where the LO frequency is half the RF band, enabling simplified LO synthesis at lower frequencies while maintaining wide RF coverage. Its monolithic GaAs design integrates an LO amplifier and passive mixer core on a single die, eliminating wirebonding and ensuring repeatable RF performance.
It operates as a double-balanced downconverter with inherent suppression of LO–RF and LO–IF feedthrough; the high 2LO-to-RF (≥28 dB) and 2LO-to-IF (≥39 dB) isolations reduce external filtering requirements. All RF/IF/LO ports are AC-coupled and 50 Ω matched across their respective bands.
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, higher-performance synthesizers for sub-harmonic pumping. |
| IF Frequency Range | 0.7–3 GHz - compatible with standard IF processing stages including SAW filters and baseband ADCs. |
| Conversion Gain | –2 to +4 dB (typ. +3 dB @ 27–30 GHz, LO = –4 dBm, Vdd = +4 V) - provides net gain without external IF amplification in many architectures. |
| Noise Figure (SSB) | 13 dB - defines minimum detectable signal level in low-SNR satellite and radar receivers. |
| 2LO-to-RF Isolation | 21–35 dB (min–max across band) - reduces spurious response and simplifies pre-mixer filtering. |
| 2LO-to-IF Isolation | 39–48 dB - minimizes LO leakage into IF chain, preserving dynamic range of downstream components. |
| Input IP3 | 2–10 dBm (typ. 6–10 dBm) - determines third-order intermodulation handling in multi-carrier microwave systems. |
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 (GCPW) PCB transitions and compatible with 2.4 mm coaxial connectors via metal housing mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | No Connect | May be tied to housing ground or left floating; no internal connection to die. |
| 3 | Vdd | +3 V to +4 V DC supply for integrated LO amplifier; requires 100–330 pF RF bypass capacitor adjacent to pin. |
| 4 | RF | AC-coupled 50 Ω input port for 20–31 GHz RF signal; matched for direct GCPW interface. |
| 5 | IF | AC-coupled 50 Ω output port for 0.7–3 GHz IF signal; optimized for minimal group delay variation. |
| 6 | LO | AC-coupled 50 Ω input port for 10–15.5 GHz sub-harmonic LO drive; tolerant of –4 dBm nominal level. |
| 7 | GND | RF ground terminal; must be soldered directly to PCB ground plane with multiple vias for low-inductance return path. |
Key Features
| Feature | Design Value |
|---|---|
| Sub-harmonic (×2) pumping | Enables LO generation at half RF frequency, reducing synthesizer complexity and phase noise impact in E-band radios. |
| Integrated LO amplifier | Single-bias (+3 V to +4 V), –4 dBm LO drive requirement eliminates need for external LO buffer stages. |
| High 2LO-to-RF/IF isolation | 28–47 dB isolation minimizes spurious mixing products and relaxes filtering requirements before/after mixer. |
| LM3 SMT package | Leadless 3.0 × 3.0 mm ceramic package with ground-signal-ground layout optimized for millimeter-wave GCPW routing. |
| AC-coupled 50 Ω ports | All RF/IF/LO ports internally matched to 50 Ω across full bandwidth, enabling direct integration into microstrip/GCPW systems. |
Applications
| LMDS Base Station Receiver | SATCOM Ground Terminal Downconverter |
|---|---|
Use Scenario: Fixed wireless access node receiving 27.5–29.5 GHz LMDS uplink signals in dense urban environments with co-channel interference. IC Role / Device Role / Timing Role: Sub-harmonic downconverter translating RF to 2.1 GHz IF for digitization and demodulation. Use Value: High 2LO-to-RF isolation (>28 dB) suppresses local oscillator leakage, preserving adjacent-channel selectivity without additional cavity filters. | Use Scenario: Portable SATCOM terminal receiving 29.5–30.0 GHz military Ka-band downlink under mobile, vibration-prone conditions. IC Role / Device Role / Timing Role: Primary RF-to-IF downconverter in compact, conduction-cooled receive chain. Use Value: Integrated LO amplifier with –4 dBm drive tolerance enables direct connection to low-power synthesizer, reducing BOM count and power consumption. |
| Point-to-Point Microwave Radio | E-Band Backhaul Transceiver |
Use Scenario: 5 km licensed backhaul link operating at 24.25–27.5 GHz with strict spectral mask compliance. IC Role / Device Role / Timing Role: Image-reject downconverter stage in dual-conversion superheterodyne architecture. Use Value: 13 dB SSB noise figure ensures adequate sensitivity for 256-QAM modulation at –85 dBm input, meeting BER <1E–6. | Use Scenario: High-capacity 10 Gbps wireless backhaul unit deployed in rooftop enclosures with ambient temperature cycling from –40°C to +85°C. IC Role / Device Role / Timing Role: First-stage downconverter in wideband E-band receiver with 20–31 GHz instantaneous bandwidth. Use Value: Stable conversion gain (±1 dB) over temperature ensures consistent IF output level without AGC loop complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sub-harmonic mixer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC1048LP3E | Wider RF range (17–44 GHz), higher LO drive (–1 dBm), no integrated LO amp, different LM3 variant pinout. | Requires external LO buffer; better suited for ultra-wideband test equipment than fixed-frequency radios. | Select when wider RF bandwidth and higher LO power tolerance outweigh need for integrated amplification. |
| Qorvo QM11020 | 20–32 GHz RF, –5 dBm LO drive, 2LO-to-RF isolation 25 dB (typ.), same LM3 footprint but different pin assignment (Vdd on Pin 4). | Lower isolation margin may require added filtering; pin mismatch prevents drop-in replacement. | Consider for cost-sensitive designs where moderate isolation degradation is acceptable and board layout can accommodate pin reassignment. |
Compared with HMC265LM3, HMC1048LP3E offers broader RF coverage but lacks integrated LO amplification, increasing system complexity; QM11020 matches RF/LO ranges closely but exhibits lower isolation and incompatible pin mapping, requiring PCB redesign for integration.
Availability
HMC265LM3 is available at Aetrix Electronics and suitable for LMDS infrastructure, SATCOM terminals, and point-to-point microwave radios requiring stable component supply across extended temperature ranges and high-frequency reliability.
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. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and RF technologies for communications, defense, and instrumentation markets.
The HMC265LM3 belongs to Analog Devices' legacy Hittite Microwave MMIC mixer product line, engineered specifically for millimeter-wave sub-harmonic downconversion in E-band wireless infrastructure and satellite communication systems.
FAQ
What is the recommended LO drive level for optimal performance of the HMC265LM3?
The HMC265LM3 is characterized with –4 dBm LO drive at +4 V supply, delivering typical conversion gain of +3 dB and 2LO-to-RF isolation ≥28 dB. Performance remains stable from –6 dBm to 0 dBm; however, exceeding +13 dBm risks permanent damage per absolute maximum ratings. For HMC265LM3, maintaining –4 dBm ensures best balance of gain, isolation, and IP3 without overdriving the integrated LO amplifier.
Does the HMC265LM3 require external DC blocking capacitors on its RF, IF, or LO ports?
No - the HMC265LM3 features internal AC coupling on all RF, IF, and LO ports, eliminating the need for external DC blocking capacitors. Each port is impedance-matched to 50 Ω across its specified frequency range (20–31 GHz RF, 0.7–3 GHz IF, 10–15.5 GHz LO). This simplifies layout and preserves high-frequency signal integrity in the HMC265LM3-based design.
What is the operating temperature range for the HMC265LM3, and how does gain vary across it?
The HMC265LM3 operates from –40°C to +85°C. Conversion gain varies by ±1.5 dB over this range at fixed LO drive (–4 dBm) and Vdd = +4 V, with worst-case deviation observed near band edges (20 GHz and 31 GHz). Full characterization data for HMC265LM3 gain vs. temperature is provided in Figures 3 and 4 of the official datasheet v01.1201.
Can the HMC265LM3 be used in an upconversion configuration?
No - the HMC265LM3 is designed and characterized exclusively as a downconverter (RF → IF). Its internal topology, biasing, and port matching are optimized for RF input and IF output. While some mixers allow bidirectional use, the HMC265LM3 datasheet specifies no upconversion performance data, and using it as such would violate its intended circuit role and likely yield unverified, non-compliant results for HMC265LM3 applications.
What PCB layout guidelines are critical for achieving specified RF performance with the HMC265LM3?
Key layout requirements for HMC265LM3 include: grounding Pin 7 directly to a solid RF ground plane with ≥4 vias; using grounded coplanar waveguide (GCPW) transitions with 0.005" gap to ground; placing 100–330 pF bypass capacitor within 0.5 mm of Pin 3 (Vdd); and adhering to the LM3-01 land pattern (±0.003" tolerance). Deviations degrade isolation and conversion gain, especially above 25 GHz.
HMC265LM3TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-TQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- RF Type:
- General Purpose
- Frequency:
- 20GHz ~ 31GHz
- Number of Mixers:
- 1
- Gain:
- 4dB
- Noise Figure:
- 13dB
- Secondary Attributes:
- Down Converter
- Current - Supply:
- 50mA
- Voltage - Supply:
- 3V ~ 4V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-SMT (5.08x5.08)
HMC265LM3TR FAQ
1.How can I place an order for HMC265LM3TR through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC265LM3TR 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 HMC265LM3TR reliable?
The price and inventory of HMC265LM3TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC265LM3TR is usually 5 days.
3.What payment methods are accepted for HMC265LM3TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC265LM3TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC265LM3TR?
HMC265LM3TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC265LM3TR 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 HMC265LM3TR?
For technical support, including HMC265LM3TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC265LM3TR requirements.
6.How does Aetrix verify that HMC265LM3TR is sourced from the original manufacturer or authorized distributors?
All HMC265LM3TR 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 HMC265LM3TR meets industry standards.
7.What is the process for return or replacement of HMC265LM3TR?
All HMC265LM3TR units undergo pre-shipment inspection (PSI). If there is an issue with HMC265LM3TR, 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 HMC265LM3TR part is unused and in its original packaging.
Return procedure for HMC265LM3TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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