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Analog Devices Inc. HMC798LC4TR-R5
- Part No.:
- HMC798LC4TR-R5
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- 24-TFQFN Exposed Pad
- Datasheet:
-
HMC798LC4TR-R5.pdf
- Description:
- IC MMIC MIXER SUB-HARM 24SMD
- Quantity:
- Payment:
- Shipping:
Inventory:2,383
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Product details
Overview
HMC798LC4TR-R5 from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC sub-harmonically pumped (x2) mixer IC designed for RF upconversion in 24–34 GHz systems, featuring integrated LO amplifier, 50 Ω matched RF/LO ports, DC–4 GHz IF bandwidth, and 30 dB 2LO-to-RF isolation. It operates from a single +5 V supply at 95 mA and is packaged in a 24-lead 4×4 mm leadless SMT alumina package.
For engineers reviewing the HMC798LC4TR-R5 datasheet, HMC798LC4TR-R5 pinout, HMC798LC4TR-R5 application, or HMC798LC4TR-R5 equivalent, key selection criteria include its 24–34 GHz RF range, +4 dBm LO drive requirement, 13 dB typical conversion loss, 20 dBm input IP3, and suitability for millimeter-wave point-to-point radios, SATCOM, and test instrumentation where wire-bond-free surface-mount integration is required.
Technical Context
The HMC798LC4TR-R5 implements a sub-harmonic (x2) mixing architecture that accepts an LO signal at half the RF frequency (12–17.75 GHz), enabling simplified LO synthesis and improved 2LO-to-RF isolation. Its integrated GaAs LO amplifier eliminates external driver stages and supports operation with only +4 dBm input drive.
DC-coupled RF and IF ports simplify biasing and enable wideband IF response down to DC, while the LO port is AC-coupled. The device delivers stable performance across –40°C to +85°C, with thermal resistance of 119 °C/W junction-to-ground-paddle and absolute maximum RF/IF input of +13 dBm.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 24–34 GHz - covers E-band for high-capacity wireless backhaul and SATCOM uplinks. |
| LO Frequency Range | 12–17.75 GHz - enables x2 sub-harmonic pumping, reducing LO source complexity. |
| IF Bandwidth | DC–4 GHz - supports baseband and wide IF signals without external coupling constraints. |
| Conversion Loss | 13 dB typ. - defines signal attenuation through mixing path; impacts system noise figure. |
| 2LO-to-RF Isolation | 30 dB typ. - suppresses second harmonic leakage into RF path, minimizing filtering requirements. |
| Input IP3 | 20 dBm typ. - indicates linearity headroom for two-tone interference rejection in dense RF environments. |
| Supply Current | 95 mA @ +5 V - determines power budget for bias network and thermal management design. |
Pinout & Package
Package: 24-lead, 4×4 mm leadless RoHS-compliant SMT package with alumina body, gold-over-nickel plating, and exposed ground paddle requiring solder connection to PCB RF ground per MSL3 reflow profile (peak 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 6, 7, 9, 12–14, 16, 18, 19, 24 | GND | RF/DC ground terminals - must be soldered to PCB ground plane; critical for RF return path and thermal dissipation. |
| 2, 3, 10, 17, 20–23 | N/C | No internal connection - externally grounded per measurement conditions but not electrically active. |
| 5 | IF | DC-coupled IF output/input - requires external series capacitor for AC coupling if DC blocking needed. |
| 8 | RF | DC-coupled RF port - 50 Ω matched; no external DC blocking required; sensitive to static discharge. |
| 11 | Vcc | +5 V supply for integrated LO amplifier - bypassing with 100 pF (RF) and 4.7 µF (bulk) capacitors recommended. |
| 15 | LO | AC-coupled LO input - 50 Ω matched; requires external DC blocking capacitor; +4 dBm nominal drive. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LO amplifier | Eliminates external driver stage; accepts +4 dBm LO input and operates from single +5 V rail. |
| Sub-harmonic (x2) pumping | Reduces required LO frequency by half, easing synthesizer design and improving spurious suppression. |
| 2LO-to-RF isolation ≥30 dB | Minimizes need for external 2LO filtering at RF port, simplifying front-end layout and BOM. |
| DC–4 GHz IF bandwidth | Supports direct baseband interfacing and wide IF sampling without transformer or balun constraints. |
| Leadless 4×4 mm SMT package | Enables automated assembly and eliminates wire bonding; requires controlled RF grounding via exposed paddle. |
Applications
| Point-to-Point Radios | SATCOM Terminals |
|---|---|
Use Scenario: High-capacity E-band wireless backhaul links operating at 24–34 GHz with tight size, weight, and power (SWaP) constraints. IC Role / Device Role / Timing Role: Upconverter mixer translating IF baseband/modulated signals to RF band using sub-harmonic LO drive. Use Value: Enables compact, surface-mount RF front-end with no wire bonds, reduced external filtering, and stable gain over temperature. |
Use Scenario: Mobile or transportable SATCOM uplink terminals requiring broadband RF coverage and high linearity in harsh environments. IC Role / Device Role / Timing Role: RF mixer in transmit chain converting modulated IF to 28 GHz Ku/Ka-band uplink frequencies. Use Value: Delivers 20 dBm IIP3 and 30 dB 2LO-to-RF isolation to maintain spectral purity under multi-carrier operation. |
| Millimeter-Wave Test Equipment | Military Radar Sensors |
Use Scenario: Vector signal analyzers and synthesizers needing calibrated, broadband mixing above 24 GHz for component characterization. IC Role / Device Role / Timing Role: Precision mixer core in instrument receiver/transmitter paths with DC–4 GHz IF support for flexible demodulation. Use Value: Provides repeatable conversion loss and isolation across full 24–34 GHz band, traceable to calibration standards. |
Use Scenario: Active electronically scanned array (AESA) radar transceivers requiring rugged, high-isolation mixing in airborne or ground-based platforms. IC Role / Device Role / Timing Role: Sub-harmonic upconverter in T/R module transmit chain, driven by low-phase-noise LO sources. Use Value: Operates reliably from –40°C to +85°C with 119 °C/W thermal resistance, supporting conduction-cooled designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sub-harmonic mixer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC1048LC4 | Wider RF range (17–44 GHz), higher conversion loss (14.5 dB typ.), same 4×4 mm package and +5 V supply. | Better suited for multi-band test equipment covering lower mmWave bands; less optimal for narrow 24–34 GHz focus. | Select HMC1048LC4 only if broader RF coverage outweighs 1.5 dB conversion loss penalty. |
| Qorvo QM11036 | Higher IF bandwidth (DC–6 GHz), 22 dBm IIP3, but requires dual supplies (+5 V and –5 V) and different 5×5 mm package. | Preferred for ultra-wide IF systems needing >4 GHz bandwidth; incompatible with existing HMC798LC4TR-R5 PCB layout. | Choose QM11036 when IF bandwidth >4 GHz is mandatory and dual-supply design is acceptable. |
Compared with HMC1048LC4 and QM11036, the HMC798LC4TR-R5 offers optimized balance of RF band specificity, single-supply simplicity, and proven 24–34 GHz performance-making it ideal for cost- and SWaP-sensitive E-band radios where layout compatibility and LO drive efficiency are prioritized.
Availability
HMC798LC4TR-R5 is available at Aetrix Electronics and suitable for point-to-point radios, SATCOM terminals, and millimeter-wave test equipment requiring stable component supply, long-term obsolescence mitigation, and RoHS-compliant SMT integration.
Supply support for HMC798LC4TR-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, Inc. (including former Hittite Microwave) is a global leader in high-performance analog, RF, and mmWave semiconductor solutions, serving communications, defense, and instrumentation markets.
The HMC798LC4TR-R5 belongs to Hittite's GaAs MMIC mixer product line, engineered specifically for E-band wireless infrastructure and defense systems demanding high isolation, wide IF bandwidth, and surface-mount reliability without wire bonding.
FAQ
What is the RF frequency range supported by the HMC798LC4TR-R5?
The HMC798LC4TR-R5 supports an RF frequency range of 24–34 GHz, covering the upper portion of the E-band used in high-speed wireless backhaul and satellite communication uplinks. This range is validated across temperature (–40°C to +85°C) and specified with typical conversion loss and isolation performance at both band edges.
Does the HMC798LC4TR-R5 require external LO amplification?
No, the HMC798LC4TR-R5 integrates a GaAs LO amplifier and operates with only +4 dBm LO input drive at 12–17.75 GHz. External amplification is unnecessary, simplifying the LO chain and reducing power consumption and board area compared to fundamental-pumped mixers.
What is the recommended power supply configuration for the HMC798LC4TR-R5?
The HMC798LC4TR-R5 requires a single +5 V DC supply applied to Pin 11 (Vcc), delivering 95 mA typical current. Designers should use local decoupling with a 100 pF RF capacitor (0402) and a 4.7 µF tantalum capacitor (Case A) to ensure stable LO amplifier operation and minimize supply-induced spurs.
Can the HMC798LC4TR-R5 be used for both upconversion and downconversion?
Yes, the HMC798LC4TR-R5 is bidirectional and functions as both an upconverter (IF→RF) and downconverter (RF→IF), as confirmed by datasheet measurements performed in upconverter mode and inherent symmetry of its passive diode-based sub-harmonic architecture. IF port is DC-coupled and supports DC–4 GHz in either direction.
Is the HMC798LC4TR-R5 pin-compatible with other Hittite 4×4 mm mixer packages?
No documented pin-to-pin compatibility exists between the HMC798LC4TR-R5 and other Hittite 4×4 mm mixers such as HMC1048LC4 or HMC8192LC4. While package footprint is identical, pin functions-including GND, N/C, IF, RF, LO, and Vcc-differ across models; PCB redesign is required for substitution.
HMC798LC4TR-R5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-TFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- General Purpose
- 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-QFN (4x4)
HMC798LC4TR-R5 FAQ
1.How can I place an order for HMC798LC4TR-R5 through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC798LC4TR-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 HMC798LC4TR-R5 reliable?
The price and inventory of HMC798LC4TR-R5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC798LC4TR-R5 is usually 5 days.
3.What payment methods are accepted for HMC798LC4TR-R5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC798LC4TR-R5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC798LC4TR-R5?
HMC798LC4TR-R5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC798LC4TR-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 HMC798LC4TR-R5?
For technical support, including HMC798LC4TR-R5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC798LC4TR-R5 requirements.
6.How does Aetrix verify that HMC798LC4TR-R5 is sourced from the original manufacturer or authorized distributors?
All HMC798LC4TR-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 HMC798LC4TR-R5 meets industry standards.
7.What is the process for return or replacement of HMC798LC4TR-R5?
All HMC798LC4TR-R5 units undergo pre-shipment inspection (PSI). If there is an issue with HMC798LC4TR-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 HMC798LC4TR-R5 part is unused and in its original packaging.
Return procedure for HMC798LC4TR-R5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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