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Analog Devices Inc. HMC798ALC4TR-R5
- Part No.:
- HMC798ALC4TR-R5
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- 24-CLCC Exposed Pad
- Datasheet:
-
HMC798ALC4TR-R5.pdf
- Description:
- IC MMIC MIXER SUB-HARM 24SMD
- Quantity:
- Payment:
- Shipping:
Inventory:3,672
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Product details
Overview
HMC798ALC4TR-R5 from Analog Devices is a GaAs MMIC subharmonic SMT mixer operating from 24 GHz to 34 GHz, featuring integrated LO amplifier, 5 V single-supply operation (97 mA), 10–10.5 dB typical conversion loss, and dc–4 GHz IF bandwidth. It serves as upconverter or downconverter in microwave SATCOM transceivers.
For engineers reviewing the HMC798ALC4TR-R5 datasheet, HMC798ALC4TR-R5 pinout, HMC798ALC4TR-R5 application, or HMC798ALC4TR-R5 equivalent, key selection criteria include RF/LO isolation (36 dB typ. at 30–34 GHz), input IP3 (20 dBm typ. upconverter, 25 dBm typ. downconverter), and 24-terminal LCC package compatibility with surface-mount manufacturing.
Technical Context
The HMC798ALC4TR-R5 implements a ×2 subharmonically pumped architecture, eliminating need for fundamental LO frequency generation at 24–34 GHz by accepting 12–18 GHz LO input. Its monolithic GaAs design integrates an LO amplifier and passive mixer core on a single die.
It supports both upper- and lower-sideband operation in upconversion and downconversion modes, with dc-coupled IF port (±3 mA max) and ac-coupled 50 Ω LO port. RF port is dc-coupled and matched to 50 Ω, enabling direct integration into broadband microwave front-ends without external bias tees.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 24–34 GHz - enables direct use in E-band point-to-point radios and military EW systems without frequency translation stages. |
| LO Input Range | 12–18 GHz - allows use of lower-frequency, lower-cost synthesizers instead of 24+ GHz LO sources. |
| IF Bandwidth | dc to 4 GHz - supports wide instantaneous bandwidth applications including radar pulse modulation and high-data-rate SATCOM. |
| Conversion Loss | 10 dB typ. (24–30 GHz), 10.5 dB typ. (30–34 GHz) - defines signal path gain budget; lower values reduce cascaded noise figure impact. |
| Input IP3 | 20 dBm typ. upconverter (30–34 GHz), 25 dBm typ. downconverter - determines linearity headroom for multi-carrier or high-PAPR waveforms. |
| 2×LO to RF Isolation | 36 dB typ. (30–34 GHz) - reduces need for external LO filtering, simplifying PCB layout and BOM. |
| Supply | 5 V @ 97 mA - single-rail biasing compatible with standard analog power domains; low current eases thermal management. |
Pinout & Package
RoHS-compliant 24-terminal ceramic LCC package (3.90 mm × 3.90 mm), with exposed thermal pad requiring RF/dc ground connection. Package type E-24-11, MSL3, rated for −40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 6, 7, 9, 12, 13, 14, 16, 18, 19, 24 | GND | RF and DC ground reference; must be low-inductance connected to PCB ground plane and exposed pad. |
| 2, 3, 10, 17, 20, 21, 22, 23 | NIC | Not internally connected; may be grounded for mechanical stability or EMI control without affecting RF performance. |
| 5 | IF | Intermediate frequency port, dc-coupled; requires external dc blocking capacitor if dc operation not needed; ±3 mA absolute max current. |
| 8 | RF | Radio frequency port, dc-coupled, 50 Ω matched; connects directly to antenna or PA/LNA chain without external matching. |
| 11 | VCC | 5 V supply for integrated LO amplifier; bypassing with 100 nF + 10 pF near pin is mandatory for stable operation. |
| 15 | LO | Local oscillator port, ac-coupled, 50 Ω matched; accepts 4 dBm nominal drive; no dc bias required. |
| EPAD | Exposed Pad | Thermal and electrical ground; must be soldered to solid copper area with ≥9 vias (3×3 array) per JEDEC JESD51-2. |
Key Features
| Feature | Design Value |
|---|---|
| Subharmonic pumping (×2 LO) | Enables use of 12–18 GHz LO sources instead of 24–34 GHz, reducing synthesizer cost, power, and complexity. |
| Integrated LO amplifier | Eliminates external LO buffer stage; 5 V single-bias simplifies power delivery and improves amplitude stability across temperature. |
| Wide IF bandwidth (dc–4 GHz) | Supports baseband I/Q modulation, pulsed radar IF outputs, and wideband digital predistortion feedback paths. |
| High 2×LO-to-RF isolation (36 dB typ.) | Reduces risk of LO leakage into antenna path, easing compliance with spectral mask requirements in licensed bands. |
| SMT-compatible LCC package | Enables automated assembly and eliminates wire bonding; ceramic construction ensures stable RF performance up to 34 GHz. |
Applications
| Microwave VSAT Radios | Point-to-Point Backhaul |
|---|---|
Use Scenario: Full-duplex transceiver in 28 GHz E-band fixed wireless access links with 1 GHz channel bandwidth. IC Role / Device Role / Timing Role: Upconverter (IF → RF) and downconverter (RF → IF) in dual-conversion architecture with shared LO synthesis. Use Value: Subharmonic pumping avoids costly 28 GHz LO generation; 10 dB conversion loss preserves link budget over 2 km range. |
Use Scenario: High-capacity 5G fronthaul radio unit transmitting 2.5 Gbps CPRI data over 24–27 GHz carrier. IC Role / Device Role / Timing Role: Downconverter extracting baseband I/Q signals from received RF; dc-coupled IF supports zero-IF demodulation. Use Value: dc–4 GHz IF bandwidth accommodates full 2.5 Gbps symbol rate without undersampling; 25 dBm IP3 handles adjacent-channel interference. |
| Satellite Communications (SATCOM) | Military Electronic Warfare |
Use Scenario: Mobile SATCOM terminal operating in 27.5–31 GHz uplink band with adaptive modulation. IC Role / Device Role / Timing Role: Upconverter translating QPSK/QAM IF signals to RF; integrated LO amplifier ensures consistent drive level under vibration. Use Value: 10.5 dB conversion loss at 30–34 GHz maintains EIRP margin; 36 dB 2×LO-to-RF isolation prevents self-jamming during transmit/receive switching. |
Use Scenario: Wideband receiver in airborne ECM pod detecting and jamming 24–34 GHz threat radars. IC Role / Device Role / Timing Role: Downconverter feeding digitizer with instantaneous 4 GHz IF bandwidth for real-time signal analysis. Use Value: dc–4 GHz IF enables capture of pulsed radar PRI and FM chirp parameters; 50 dBm input IP2 suppresses second-order intermodulation from co-site emitters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microwave mixer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC1048LC4TR | Wider RF range (17–44 GHz), higher conversion loss (12 dB typ.), no integrated LO amplifier. | Requires external LO buffer; better suited for lab test equipment where LO source flexibility outweighs board space. | Select when broader frequency coverage is critical and external LO amplification is acceptable. |
| Qorvo QM11024 | Same 24–34 GHz range, 11 dB conversion loss, 5 V/110 mA, but uses GaN-on-SiC; no integrated LO amp. | Higher power handling (20 dBm P1dB), but lacks LO integration and requires separate bias network. | Select for high-power EW jammers where robustness > integration; not drop-in due to different pinout and thermal profile. |
Compared with HMC1048LC4TR and QM11024, the HMC798ALC4TR-R5 delivers superior system-level integration via its on-die LO amplifier and lower conversion loss, reducing component count and improving phase noise sensitivity-critical for coherent SATCOM and precision radar receivers.
Availability
HMC798ALC4TR-R5 is available at Aetrix Electronics and suitable for microwave VSAT radios, point-to-point backhaul systems, and military electronic warfare platforms requiring stable component supply across extended temperature ranges and high-frequency reliability.
Supply support for HMC798ALC4TR-R5 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 is a global leader in high-performance analog, mixed-signal, and RF ICs, serving communications, industrial, and defense markets with precision signal processing solutions.
The HMC798ALC4TR-R5 belongs to Analog Devices' Hittite Microwave MMIC product line, engineered specifically for millimeter-wave infrastructure and defense applications demanding high linearity, wide IF bandwidth, and subharmonic LO efficiency.
FAQ
What is the recommended LO drive level for optimal performance of the HMC798ALC4TR-R5?
The HMC798ALC4TR-R5 is specified for 4 dBm LO input power across its 12–18 GHz range, delivering best-in-class conversion loss (10 dB typ.) and IP3 (20 dBm typ.). Drive levels between 2 dBm and 6 dBm are supported, but deviation from 4 dBm increases conversion loss by up to 1.5 dB and reduces IP3 by ~2 dB. Always verify LO power at the HMC798ALC4TR-R5 pin using calibrated RF measurement.
Can the HMC798ALC4TR-R5 operate in zero-IF (direct-conversion) mode?
Yes-the HMC798ALC4TR-R5 supports true dc-coupled IF operation, enabling zero-IF architectures. Its IF port (Pin 5) is dc-coupled and rated for ±3 mA sink/source current. For zero-IF use, ensure no dc offset exceeds this limit and implement proper baseband filtering; do not add series dc-blocking capacitors, as they would disrupt dc response.
How does the exposed thermal pad (EPAD) of the HMC798ALC4TR-R5 affect RF performance?
The EPAD of the HMC798ALC4TR-R5 is electrically and thermally connected to internal ground planes. Improper soldering-such as voiding or insufficient via count-degrades RF return loss (especially at 30+ GHz) and raises junction temperature, accelerating parametric drift. JEDEC JESD51-2 mandates ≥9 thermal vias (3×3 array) connecting EPAD to inner ground layers for stable HMC798ALC4TR-R5 operation above 25°C ambient.
Is the HMC798ALC4TR-R5 suitable for both upconversion and downconversion in the same design?
Yes-the HMC798ALC4TR-R5 is fully bidirectional: it functions identically as an upconverter (IF → RF) or downconverter (RF → IF) across 24–34 GHz. Its symmetric port design and dc-coupled IF allow reuse in transceiver architectures; however, LO injection sideband (low-side vs. high-side) must be selected per mode to avoid image interference.
What is the maximum RF input power the HMC798ALC4TR-R5 can handle without damage?
The absolute maximum RF input power for the HMC798ALC4TR-R5 is 13 dBm, per Analog Devices' Absolute Maximum Ratings table. Exceeding this-even briefly-risks permanent gate oxide damage in the GaAs FETs. For reliable operation, keep continuous RF input ≤10 dBm; transient peaks must remain below 13 dBm with <1 µs duration and duty cycle <0.1%.
HMC798ALC4TR-R5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-CLCC Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- RF Type:
- VSAT
- Frequency:
- 24GHz ~ 34GHz
- Number of Mixers:
- 1
- Gain:
- -
- Noise Figure:
- -
- Secondary Attributes:
- -
- Current - Supply:
- 95mA
- Voltage - Supply:
- 5V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-CLCC (3.9x3.9)
HMC798ALC4TR-R5 FAQ
1.How can I place an order for HMC798ALC4TR-R5 through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC798ALC4TR-R5 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 HMC798ALC4TR-R5 reliable?
The price and inventory of HMC798ALC4TR-R5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC798ALC4TR-R5 is usually 5 days.
3.What payment methods are accepted for HMC798ALC4TR-R5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC798ALC4TR-R5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC798ALC4TR-R5?
HMC798ALC4TR-R5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC798ALC4TR-R5 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 HMC798ALC4TR-R5?
For technical support, including HMC798ALC4TR-R5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC798ALC4TR-R5 requirements.
6.How does Aetrix verify that HMC798ALC4TR-R5 is sourced from the original manufacturer or authorized distributors?
All HMC798ALC4TR-R5 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 HMC798ALC4TR-R5 meets industry standards.
7.What is the process for return or replacement of HMC798ALC4TR-R5?
All HMC798ALC4TR-R5 units undergo pre-shipment inspection (PSI). If there is an issue with HMC798ALC4TR-R5, 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 HMC798ALC4TR-R5 part is unused and in its original packaging.
Return procedure for HMC798ALC4TR-R5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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