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Analog Devices Inc. HMC1081-SX
- Part No.:
- HMC1081-SX
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- Die
- Datasheet:
-
HMC1081-SX.pdf
- Description:
- IC MMIC IQ MIXER DIE
- Quantity:
- Payment:
- Shipping:
Inventory:2,353
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Product details
Overview
HMC1081-SX from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC double-balanced passive mixer for E-band RF systems, operating with 50–75 GHz RF input, 40–85 GHz LO drive, and DC–26 GHz IF bandwidth. It delivers 10.5 dB typical conversion loss at +12 dBm LO, 30 dB LO-to-RF isolation, and supports both upconversion and downconversion in millimeter-wave transceivers.
For engineers reviewing the HMC1081-SX datasheet, HMC1081-SX pinout, HMC1081-SX application, or HMC1081-SX equivalent, this device requires attention to LO power sensitivity, RF/IF return loss across band, thermal management at junction temperatures up to 170 °C, and die-level mounting constraints including backside grounding and gold wire bonding.
Technical Context
The HMC1081-SX implements a passive double-balanced Schottky diode architecture on GaAs, eliminating DC bias requirements while enabling wideband operation from DC to 26 GHz at IF and 50–75 GHz at RF. Its balanced topology provides inherent suppression of even-order harmonics and LO leakage.
Performance is characterized in a 50 Ω environment using RF probing; all bond pads (LO, RF, IF) are Ti/Au metallized and AC-coupled except IF, which is DC-coupled. The die bottom serves as RF/DC ground, requiring eutectic or conductive epoxy attachment to a grounded heat spreader.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 50–75 GHz - defines usable E-band transmit/receive front-end coverage |
| LO Frequency Range | 40–85 GHz - supports flexible local oscillator planning across multiple bands |
| IF Frequency Range | DC–26 GHz - enables baseband and wideband intermediate frequency processing |
| Conversion Loss | 10.5 dB typ. @ +12 dBm LO - sets system noise figure and gain budget in cascade analysis |
| LO-to-RF Isolation | 30 dB min. - reduces LO radiation into antenna path and improves spectral purity |
| P1dB Input | 10 dBm typ. @ LO = 49 GHz - determines maximum linear input signal before compression |
| Input IP3 | 16 dBm typ. @ LO = 49 GHz - quantifies third-order intermodulation distortion performance |
| Operating Temp. | −55 °C to +85 °C - specifies environmental envelope for outdoor radar and test equipment use |
Pinout & Package
Package: Bare die, 1.23 × 1.21 × 0.1 mm (0.048″ × 0.047″ × 0.004″), backside metallized for grounding. Requires eutectic or conductive epoxy die attach and gold wire bonding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pad 1 | LO | AC-coupled 50 Ω matched input - must be driven with +12 dBm nominal LO power |
| Pad 2 | RF | AC-coupled 50 Ω matched port - connects to antenna or filter network in E-band front-end |
| Pad 3 | IF | DC-coupled 50 Ω port - interfaces directly to baseband ICs or wideband ADCs without blocking capacitors |
| Die Bottom | GND | RF/DC ground plane - must be bonded to system ground with low-inductance connection |
Key Features
| Feature | Design Value |
|---|---|
| No DC bias required | Passive Schottky diode core eliminates bias circuitry, simplifying PCB layout and reducing BOM count |
| Low LO drive sensitivity | +12 dBm LO power enables use with low-power synthesizers, reducing LO chain complexity and power consumption |
| High LO/RF isolation | 30 dB minimum suppresses LO feedthrough into RF path, critical for full-duplex and FDD radar systems |
| Wide IF bandwidth | DC–26 GHz IF supports direct sampling of modulated waveforms and ultra-wideband signal capture |
| Robust die construction | Ti/Au bond pads + fully passivated Schottky devices ensure reliability under thermal cycling and RF stress |
Applications
| E-Band Point-to-Point Radio | Automotive Radar Transceiver |
|---|---|
Use Scenario: High-capacity wireless backhaul links operating at 60–70 GHz in licensed E-band spectrum. IC Role / Device Role / Timing Role: Downconverter in receive path and upconverter in transmit path, translating between RF and baseband. Use Value: Enables compact, high-isolation front-end design with no DC biasing, supporting >1 Gbps throughput in small form factor radios. |
Use Scenario: 76–77 GHz automotive radar modules for adaptive cruise control and collision avoidance. IC Role / Device Role / Timing Role: Core RF mixer in monostatic transceiver architecture, handling simultaneous TX/RX signal routing. Use Value: Delivers 30 dB LO-to-RF isolation to minimize self-interference and maintain dynamic range in dense vehicular RF environments. |
| Millimeter-Wave Test Equipment | Military EW/SIGINT Receiver |
Use Scenario: Vector signal analyzers and broadband signal generators requiring calibrated E-band frequency translation. IC Role / Device Role / Timing Role: Precision mixer in calibration path and stimulus generation chain. Use Value: DC–26 GHz IF bandwidth allows direct digitization of wide instantaneous bandwidth signals without IF staging. |
Use Scenario: Electronic warfare receivers scanning 50–75 GHz threat bands for radar warning and signal intelligence. IC Role / Device Role / Timing Role: Front-end image-reject mixer in superheterodyne architecture with high spurious suppression. Use Value: Double-balanced topology inherently rejects even-order distortion and LO harmonics, improving detection fidelity in contested spectrum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar passive millimeter-wave mixer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC1113-SX | Wider RF range (33–50 GHz), lower conversion loss (8.5 dB typ.), but narrower IF (DC–18 GHz) | Better suited for Ka-band vs. E-band; not interchangeable due to RF band mismatch | Select HMC1113-SX only when operating below 50 GHz RF; HMC1081-SX remains optimal for 50–75 GHz systems |
| Qorvo QPM1002 | Integrated GaAs pHEMT-based active mixer, requires +5 V bias, 22 dB conversion gain, 35 GHz max RF | Provides gain but limited to K-band; incompatible with E-band frequency plans and passive system architectures | Choose QPM1002 only if system requires gain and operates ≤35 GHz; HMC1081-SX is sole qualified passive option for 50–75 GHz |
Compared with HMC1113-SX and QPM1002, the HMC1081-SX uniquely satisfies E-band (50–75 GHz) passive mixing with DC–26 GHz IF, making it irreplaceable in 60 GHz+ communications and radar where frequency coverage, LO efficiency, and harmonic rejection are non-negotiable.
Availability
HMC1081-SX is available at Aetrix Electronics and suitable for E-band communications systems, automotive radar modules, and millimeter-wave test equipment requiring stable component supply across extended temperature ranges and high-frequency performance consistency.
Supply support for HMC1081-SX 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 portfolio, specializing in microwave and millimeter-wave ICs for defense, communications, and instrumentation.
The HMC1081-SX belongs to Hittite's GaAs MMIC mixer product line, engineered specifically for passive, high-isolation, wide-IF E-band signal translation in space-constrained, thermally demanding RF front-ends.
FAQ
What is the recommended LO drive level for optimal performance of the HMC1081-SX?
The HMC1081-SX achieves best conversion loss (10.5 dB typ.) and isolation at +12 dBm LO power. Performance degrades outside ±2 dB of this level-below +10 dBm increases conversion loss, above +14 dBm risks compression. The datasheet specifies +12 dBm as the reference condition for all key specs including IP3 and P1dB.
Does the HMC1081-SX require DC biasing or external filtering components?
No, the HMC1081-SX is a fully passive double-balanced mixer built on GaAs Schottky diodes and requires no DC bias. All ports are internally matched to 50 Ω; LO and RF pads are AC-coupled, while IF is DC-coupled-eliminating need for external blocking capacitors or bias tees in standard configurations.
How is thermal management handled for the HMC1081-SX in high-power operation?
The HMC1081-SX has a thermal resistance of 823 °C/W (junction to die bottom). Effective cooling requires low-inductance, low-thermal-resistance attachment of the metallized die bottom to a grounded heat spreader (e.g., molybdenum tab) using AuSn eutectic or conductive epoxy, per Hittite's mounting guidelines.
Can the HMC1081-SX be used for both upconversion and downconversion?
Yes-the HMC1081-SX is bidirectional by design. As an upconverter, it accepts DC–26 GHz IF and 40–85 GHz LO to generate 50–75 GHz RF output. As a downconverter, it accepts 50–75 GHz RF and same LO range to produce DC–26 GHz IF. Both modes are characterized and supported in the datasheet.
What packaging options are available for the HMC1081-SX?
The HMC1081-SX is supplied as a bare die (1.23 × 1.21 × 0.1 mm) in Gel Pack (GP-1) format. No leaded, QFN, or module variants exist. Customers must perform die attach, wire bonding, and hermetic or cavity packaging per application requirements-no pre-packaged versions are offered.
HMC1081-SX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Tray
- Product Status:
- Active
- RF Type:
- Radar
- Frequency:
- 50GHz ~ 75GHz
- Number of Mixers:
- 1
- Gain:
- -
- Noise Figure:
- -
- Secondary Attributes:
- Up/Down Converter
- Current - Supply:
- -
- Voltage - Supply:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
HMC1081-SX FAQ
1.How can I place an order for HMC1081-SX through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC1081-SX 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 HMC1081-SX reliable?
The price and inventory of HMC1081-SX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC1081-SX is usually 5 days.
3.What payment methods are accepted for HMC1081-SX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC1081-SX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC1081-SX?
HMC1081-SX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC1081-SX 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 HMC1081-SX?
For technical support, including HMC1081-SX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC1081-SX requirements.
6.How does Aetrix verify that HMC1081-SX is sourced from the original manufacturer or authorized distributors?
All HMC1081-SX 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 HMC1081-SX meets industry standards.
7.What is the process for return or replacement of HMC1081-SX?
All HMC1081-SX units undergo pre-shipment inspection (PSI). If there is an issue with HMC1081-SX, 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 HMC1081-SX part is unused and in its original packaging.
Return procedure for HMC1081-SX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HMC1081-SX Tags
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MAX2681EUT+T
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ADE-1ASK+
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