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Analog Devices Inc. HMC1084LC4TR-R5
- Part No.:
- HMC1084LC4TR-R5
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Switches
- Package:
- 24-TFQFN Exposed Pad
- Datasheet:
-
HMC1084LC4TR-R5.pdf
- Description:
- IC RF SWITCH SP4T 30GHZ 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,525
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Product details
Overview
HMC1084LC4TR-R5 from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC SP4T reflective switch operating from 23–30 GHz, delivering 2.8 dB typical insertion loss (26–30 GHz), 26 dB typical isolation, and >27 dBm RF input power handling. It uses 0/−3 V logic control, consumes <10 µA per control line, and is housed in a 24-lead 4×4 mm ceramic SMT package - ideal for SATCOM front-ends and microwave radio transceivers.
For engineers reviewing the HMC1084LC4TR-R5 datasheet, HMC1084LC4TR-R5 pinout, HMC1084LC4TR-R5 application, or HMC1084LC4TR-R5 equivalent, key selection criteria include broadband 23–30 GHz performance, reflective architecture compatibility with impedance-matched systems, low DC current consumption versus PIN diode alternatives, and MSL-1 surface-mount manufacturability.
Technical Context
The HMC1084LC4TR-R5 implements a monolithic GaAs MESFET-based SP4T reflective switch topology with four independent −3 V active-low control inputs (VC1–VC4), enabling single-pole routing of RFC to one of four 50 Ω RF ports (RF1–RF4). All RF paths are DC-coupled and internally matched.
Its reflective design requires external 50 Ω terminations on unselected RF ports; return loss in "on" state exceeds 11 dB (23–30 GHz), while "off" state return loss is ≥6 dB. Switching speed is characterized by 15 ns tRISE/tFALL and 53 ns tON/tOFF, supporting high-speed TDD and beam-steering timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 23–30 GHz - fully specified operation across Ka-band SATCOM and radar bands without retuning. |
| Insertion Loss (RFC→RF1, 26–30 GHz) | 2.8 dB typ - enables low-loss signal routing in high-frequency transceiver chains with minimal gain budget impact. |
| Isolation (RFC↔RF1/RF4) | 26 dB typ - suppresses crosstalk between active and terminated paths in multi-channel switching architectures. |
| Input IP3 (23–25 GHz) | 47 dBm - supports linear operation with two-tone signals up to +10 dBm per tone in receiver front-ends. |
| Control Voltage | 0 V / −3 V logic - compatible with standard CMOS/TTL level shifters; no external bias circuitry required. |
| Package | 24-lead 4×4 mm ceramic SMT - RoHS-compliant, MSL-1, with exposed ground paddle for thermal and RF grounding. |
Pinout & Package
Package: 24-lead leadless ceramic SMT (4×4 mm body, alumina substrate, gold-plated leads and paddle); MSL-1, −55°C to +85°C operating temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RFC (Pin 4) | Common RF Input/Output | DC-coupled 50 Ω port; connects to antenna or transceiver chain; must be impedance-matched. |
| RF1 (Pin 10), RF2 (Pin 14), RF3 (Pin 17), RF4 (Pin 21) | SP4T Output Ports | DC-coupled 50 Ω reflective ports; each requires external 50 Ω termination when not selected. |
| VC1–VC4 (Pins 7, 12, 19, 24) | Active-Low Control Inputs | −3 V selects corresponding RF path; 0 V deselects; <10 µA leakage ensures low standby power. |
| GND (Pins 3, 5, 9, 11, 13, 15, 16, 18, 20, 22) | RF/DC Ground Terminals | Must be soldered to PCB ground plane; multiple pins + exposed paddle minimize inductance and thermal resistance. |
| N/C (Pins 1, 2, 6, 8, 23) | No-Connect Terminals | Internally open; externally grounded per measurement setup to stabilize RF reference potential. |
Key Features
| Feature | Design Value |
|---|---|
| Broadband 23–30 GHz operation | Covers full Ka-band satellite uplink/downlink and point-to-point microwave radio channels without band switching. |
| Reflective SP4T architecture | Enables compact layout with no internal termination resistors; reduces die area and insertion loss vs. absorptive designs. |
| 0/−3 V logic interface | Eliminates need for negative voltage generators; interfaces directly with FPGA I/O banks and level-shifting drivers. |
| 24-pin 4×4 mm SMT package | Supports automated reflow assembly; exposed paddle provides 24 °C/W thermal resistance for reliable +85°C operation. |
| ESD robustness (HBM Class 1A) | Withstands ≥250 V HBM; requires standard ESD handling but no special protection circuitry in PCB layout. |
Applications
| SATCOM Terminal Front-End | Microwave Point-to-Point Radio |
|---|---|
Use Scenario: Dual-polarization Ka-band SATCOM terminal selecting between H/V or L/R antenna feeds under real-time link management. IC Role / Device Role / Timing Role: SP4T reflective switch routing RFC between four polarization or frequency-agile RF paths with sub-60 ns switching. Use Value: 26 dB isolation prevents cross-polar interference; 2.8 dB insertion loss preserves EIRP and G/T ratio in constrained SWaP-C systems. |
Use Scenario: High-capacity 5G backhaul radio using time-division duplexing with dynamic antenna array reconfiguration. IC Role / Device Role / Timing Role: Fast-switching RF path selector enabling rapid TDD frame transitions and beam agility in 23–30 GHz links. Use Value: 15 ns rise/fall time meets strict TDD guard interval requirements; low DC current (<40 µA total) extends outdoor unit battery life. |
| Military Radar T/R Module | Millimeter-Wave Test Instrumentation |
Use Scenario: Active electronically scanned array (AESA) radar module requiring low-loss, high-isolation RF path selection between transmit/receive chains and calibration loops. IC Role / Device Role / Timing Role: Reflective SP4T switch providing RFC routing to RF1–RF4 under FPGA control for built-in test and channel calibration. Use Value: >27 dBm power handling supports high-PAPR radar pulses; 47 dBm IP3 maintains linearity during wideband chirp transmission. |
Use Scenario: Automated test equipment (ATE) switching matrix for millimeter-wave device characterization across 23–30 GHz. IC Role / Device Role / Timing Role: Precision RF path selector in multi-port VNA or signal analyzer front-end, enabling sequential DUT connection. Use Value: Stable 50 Ω match (≥11 dB on-state RL) minimizes measurement uncertainty; compact 4×4 mm footprint enables dense switch matrix layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SP4T reflective switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC1118LP4E | Wider bandwidth (10–40 GHz), higher insertion loss (3.5 dB typ @ 28 GHz), same 0/−3 V control, 24-lead 4×4 mm package. | Supports broader frequency coverage including X/Ku-bands; less optimal for narrow Ka-band-only systems due to higher loss. | Select HMC1118LP4E only if multi-band operation beyond 30 GHz is required; otherwise HMC1084LC4TR-R5 offers superior Ka-band efficiency. |
| Qorvo QM11036 | 24–34 GHz range, 3.0 dB insertion loss, −5 V control logic, 20-lead 3.5×3.5 mm QFN package. | Requires negative voltage generation; smaller footprint but higher thermal resistance and lower isolation (23 dB). | Choose QM11036 only for space-constrained designs accepting trade-offs in isolation, power handling, and control complexity. |
Compared with HMC1118LP4E and QM11036, the HMC1084LC4TR-R5 delivers the lowest insertion loss and highest isolation specifically optimized for 23–30 GHz Ka-band systems, with simplified 0/−3 V control and proven thermal performance in hermetic ceramic packaging.
Availability
HMC1084LC4TR-R5 is available at Aetrix Electronics and suitable for SATCOM terminals, microwave radio transceivers, and military radar T/R modules requiring stable component supply, long-lifecycle support, and traceable sourcing for defense and aerospace programs.
Supply support for HMC1084LC4TR-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 acquired Hittite Microwave in 2014, integrating its high-frequency RF/Microwave portfolio into ADI's Communications and Aerospace & Defense divisions.
The HMC1084LC4TR-R5 belongs to Hittite's legacy GaAs MMIC SPnT switch family, designed specifically for Ka-band infrastructure where low loss, high isolation, and fast switching are critical in compact SMT form factors.
FAQ
What is the operating frequency range of the HMC1084LC4TR-R5?
The HMC1084LC4TR-R5 operates from 23 to 30 GHz with fully characterized insertion loss, isolation, and return loss across this band. Typical insertion loss is 2.8 dB (26–30 GHz), and isolation reaches 26 dB, making it suitable for Ka-band SATCOM and point-to-point microwave radio applications where consistent broadband performance is essential.
Does the HMC1084LC4TR-R5 require external termination resistors?
Yes - the HMC1084LC4TR-R5 is a reflective SP4T switch, meaning unselected RF ports (RF1–RF4) must be terminated to 50 Ω externally. This is required to maintain impedance match and achieve the specified isolation and return loss; internal terminations are not provided, distinguishing it from absorptive switch architectures.
What control voltage levels are valid for the HMC1084LC4TR-R5 VC pins?
The HMC1084LC4TR-R5 accepts 0 V (logic high, path deselected) and −3 V (logic low, path selected) on VC1–VC4. The datasheet specifies that voltages between +1 V and −0.25 V are interpreted as high, and −2.75 V to −5 V as low - but −3 V is the recommended nominal low-level drive for guaranteed operation and minimal leakage current (<10 µA per pin).
How is thermal management handled on the HMC1084LC4TR-R5?
The HMC1084LC4TR-R5 features an exposed ground paddle that must be soldered to the PCB ground plane. Its thermal resistance from channel to die bottom is 24 °C/W, enabling reliable operation up to +85 °C ambient when properly mounted. Multiple GND pins (10 total) and the paddle ensure low-inductance RF grounding and efficient heat conduction to the board.
Is the HMC1084LC4TR-R5 pin-compatible with other Hittite SP4T switches like the HMC1118LP4E?
No - although both the HMC1084LC4TR-R5 and HMC1118LP4E use 24-lead 4×4 mm packages, their pinouts differ: HMC1084LC4TR-R5 assigns RFC to Pin 4 and RF1–RF4 to Pins 10/14/17/21, whereas HMC1118LP4E uses different pin allocations. PCB layout changes are required for substitution; they are functional alternatives but not pin-compatible replacements.
HMC1084LC4TR-R5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 24-TFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- RF Type:
- VSAT
- Topology:
- Reflective
- Circuit:
- SP4T
- Frequency Range:
- 23GHz ~ 30GHz
- Isolation:
- 26dB
- Insertion Loss:
- 3.5dB
- Test Frequency:
- 30GHz
- P1dB:
- -
- IIP3:
- 47dBm
- Features:
- -
- Impedance:
- 50Ohm
- Voltage - Supply:
- -
- Operating Temperature:
- -55°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (4x4)
HMC1084LC4TR-R5 FAQ
1.How can I place an order for HMC1084LC4TR-R5 through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC1084LC4TR-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 HMC1084LC4TR-R5 reliable?
The price and inventory of HMC1084LC4TR-R5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC1084LC4TR-R5 is usually 5 days.
3.What payment methods are accepted for HMC1084LC4TR-R5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC1084LC4TR-R5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC1084LC4TR-R5?
HMC1084LC4TR-R5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC1084LC4TR-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 HMC1084LC4TR-R5?
For technical support, including HMC1084LC4TR-R5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC1084LC4TR-R5 requirements.
6.How does Aetrix verify that HMC1084LC4TR-R5 is sourced from the original manufacturer or authorized distributors?
All HMC1084LC4TR-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 HMC1084LC4TR-R5 meets industry standards.
7.What is the process for return or replacement of HMC1084LC4TR-R5?
All HMC1084LC4TR-R5 units undergo pre-shipment inspection (PSI). If there is an issue with HMC1084LC4TR-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 HMC1084LC4TR-R5 part is unused and in its original packaging.
Return procedure for HMC1084LC4TR-R5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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