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Analog Devices Inc. HMC241LP3TR
- Part No.:
- HMC241LP3TR
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Switches
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
HMC241LP3TR.pdf
- Description:
- IC RF SWITCH SP4T 4GHZ 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,255
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Product details
Overview
HMC241LP3 from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC SP4T non-reflective RF switch operating from DC to 4 GHz, featuring 0.7 dB insertion loss and 43 dB isolation at 2 GHz, with integrated 2:4 TTL decoder and single +5 V supply. It serves as a signal path selector in multi-band front-end modules for wireless infrastructure.
For engineers reviewing the HMC241LP3 datasheet, HMC241LP3 pinout, HMC241LP3 application, or HMC241LP3 equivalent, key selection criteria include its non-reflective architecture, TTL/CMOS-compatible control interface, 3×3 mm leadless SMT package, and DC–4 GHz bandwidth with verified RF performance across temperature.
Technical Context
The HMC241LP3 implements a monolithic GaAs MMIC design with on-die termination for all "off" paths, enabling true non-reflective operation critical for cascaded RF stages. Its integrated 2:4 decoder reduces external logic count by mapping two TTL/CMOS control lines (A/B) to four RF paths (RF1–RF4).
DC blocking capacitors are required at RFC and all RF ports per design specification; bias is applied only to Vdd (Pin 6), while Pins 7 (B) and 8 (A) accept standard TTL/CMOS voltage levels. Thermal resistance is 200 °C/W for the insertion loss path, supporting continuous operation up to +85 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | DC to 4 GHz - supports full-band operation from baseband through WiMAX and WLAN bands without re-tuning. |
| Insertion Loss | 0.7 dB @ 2 GHz - minimizes signal attenuation in active transmit/receive paths, preserving SNR in sensitive receivers. |
| Isolation | 43 dB @ 2 GHz - prevents crosstalk between selected and deselected RF paths, essential for MIMO and diversity switching. |
| Supply Voltage | +5 V ±10% - enables direct compatibility with standard digital logic rails, eliminating need for dedicated bias regulators. |
| Control Interface | TTL/CMOS-compatible A/B inputs - allows direct connection to FPGA or baseband processor GPIO without level-shifting circuitry. |
| Package | 3×3 mm, 16-pin leadless SMT (MSL1) - supports high-density RF layout with exposed paddle for thermal and RF grounding. |
| P1dB | +27 dBm @ 0.5–4 GHz - sustains linear operation under typical power amplifier output conditions in repeater and base station designs. |
Pinout & Package
Package: 3×3 mm, 16-pin leadless surface-mount package with exposed metal paddle (GND) on bottom; RoHS-compliant Sn/Pb plating; MSL1 rating; max reflow 235 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12, 15 | RF4, RF3, RF2, RF1, RFC | DC-coupled 50 Ω RF ports requiring external DC blocking capacitors; RFC is common RF port, RF1–RF4 are selectable paths. |
| 2, 3, 10, 11, 13 | N/C | No-connect pins; must be soldered to PCB RF ground to maximize isolation and suppress parasitic resonance. |
| 5, 14, 16 | GND | Ground terminals including exposed paddle - all must connect directly to solid RF ground plane for thermal dissipation and impedance stability. |
| 6 | Vdd | +5 V supply input; draws 2.7 mA typical; decoupling capacitor required near pin for RF stability. |
| 7 | B | LSB TTL/CMOS control input; low/high logic selects RF path per truth table; 5 µA leakage typical. |
| 8 | A | MSB TTL/CMOS control input; used with Pin 7 to select one of four RF paths (RF1–RF4) via internal decoder. |
Key Features
| Feature | Design Value |
|---|---|
| Non-reflective SP4T architecture | Terminates deselected paths internally to 50 Ω, preventing signal reflection that would degrade VSWR in cascaded filter/amplifier chains. |
| Integrated 2:4 TTL decoder | Reduces control line count from 4 to 2, simplifying FPGA or ASIC interface and minimizing routing congestion in compact RF modules. |
| Single +5 V supply operation | Eliminates need for negative or dual supplies, lowering BOM cost and power management complexity in battery-powered or space-constrained systems. |
| DC–4 GHz bandwidth | Covers LTE Bands 1–40, WiMAX 2.3/3.5 GHz, WLAN 2.4/5 GHz, and CATV downstream, enabling reuse across multiple wireless standards. |
| High linearity (IP3 = +45 dBm) | Supports multi-tone operation without intermodulation distortion, critical for wideband transceivers handling concurrent LTE/WiFi signals. |
Applications
| Base Station Front-End | WiMAX/WLAN Access Point |
|---|---|
Use Scenario: Switching between multiple antenna elements and band-specific filters in macrocell BTS RF front-end. IC Role / Device Role / Timing Role: Non-reflective SP4T RF path selector enabling dynamic antenna tuning and band aggregation. Use Value: 43 dB isolation prevents inter-band coupling; 0.7 dB loss preserves EIRP and receiver sensitivity across 4G/5G bands. | Use Scenario: Selecting between 2.4 GHz and 5 GHz WLAN bands and WiMAX 3.5 GHz channel in multi-standard CPE units. IC Role / Device Role / Timing Role: Single-chip RF switch replacing discrete GaAs switches and external decoder logic. Use Value: Integrated decoder cuts PCB area by >30%; 3×3 mm footprint fits tight RF module layouts without sacrificing isolation. |
| CATV/DBS Distribution Hub | RF Test Equipment Signal Routing |
Use Scenario: Routing downstream RF signals (950–2150 MHz) to multiple output ports in headend or node distribution systems. IC Role / Device Role / Timing Role: High-isolation SP4T switch managing signal path redundancy and channel selection. Use Value: 40 dB isolation at 2.15 GHz ensures minimal cross-talk between subscriber outputs; +27 dBm P1dB handles high-level cable signals. | Use Scenario: Automated RF path configuration in vector network analyzers and signal generators during calibration and sweep routines. IC Role / Device Role / Timing Role: Fast-switching, low-loss path selector enabling repeatable, low-VSWR test fixture reconfiguration. Use Value: 100 ns tOFF ensures sub-millisecond path changes; non-reflective design maintains measurement accuracy across full 4 GHz range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SP4T RF switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC241LP3E | RoHS-compliant version with 100% matte tin plating and 260 °C max reflow; identical electrical specs and pinout. | Required for lead-free manufacturing; same RF performance but different assembly process window. | Select HMC241LP3E for new RoHS-compliant designs; legacy HMC241LP3 remains valid for Sn/Pb assembly. |
| Qorvo QM11036 | SP4T GaAs pHEMT switch, DC–6 GHz, 0.8 dB IL @ 2.5 GHz, 37 dB isolation @ 2.5 GHz, +3.3 V supply. | Wider bandwidth and lower supply voltage, but lower isolation and no integrated decoder - requires external logic. | Choose QM11036 when extending beyond 4 GHz or using 3.3 V systems; retain HMC241LP3 where TTL decoding and 43 dB isolation are mandatory. |
Compared with HMC241LP3E, the HMC241LP3 offers identical RF performance with Sn/Pb finish for legacy reflow profiles; versus QM11036, it delivers superior isolation and integrated control logic at the cost of narrower bandwidth and higher supply voltage.
Availability
HMC241LP3 is available at Aetrix Electronics and suitable for base station front-ends, WiMAX/WLAN access points, and CATV/DBS distribution hubs requiring stable component supply and proven RF reliability.
Supply support for HMC241LP3 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 integrates its high-frequency RF portfolio into precision analog and RF solutions for communications, defense, and instrumentation markets.
The HMC241LP3 belongs to Hittite's GaAs MMIC SP4T switch product line, engineered for broadband non-reflective signal routing in wireless infrastructure where integration, isolation, and thermal robustness are critical.
FAQ
What is the operating temperature range for the HMC241LP3?
The HMC241LP3 operates from –40 °C to +85 °C ambient temperature. Its thermal resistance is specified at 200 °C/W for the insertion loss path, and the package bottom paddle must be soldered to a solid RF ground plane to maintain thermal performance within this range. The HMC241LP3 is qualified for use in outdoor base station enclosures and industrial-grade wireless equipment.
Does the HMC241LP3 require external DC blocking capacitors?
Yes, the HMC241LP3 requires external DC blocking capacitors at RFC and all RF1–RF4 ports because all RF pins are DC-coupled and matched to 50 Ω. This is explicitly stated in the pin descriptions and application notes. Omitting these capacitors risks DC path conflicts and degraded return loss, especially in systems with mixed AC/DC biasing like PA output stages.
Is the HMC241LP3 pin-compatible with the HMC241LP3E?
Yes, the HMC241LP3 and HMC241LP3E share identical pinout, package dimensions, and electrical specifications; the only difference is lead finish (Sn/Pb vs. 100% matte tin) and MSL reflow profile. Both parts use the same 3×3 mm 16-pin leadless package and can be substituted on the same PCB layout without modification.
What is the maximum RF input power the HMC241LP3 can handle?
The HMC241LP3 supports +27 dBm maximum RF input power from 0.5 GHz to 4.0 GHz, and +20 dBm from 0.05 GHz to 0.5 GHz. This is defined under absolute maximum ratings with Vdd = +5 Vdc. Exceeding these levels risks permanent damage to the GaAs MMIC die, particularly in the terminated "off" paths where power dissipation is less efficient.
How does the integrated 2:4 decoder simplify system design with the HMC241LP3?
The integrated 2:4 TTL decoder in the HMC241LP3 reduces required control lines from four (one per RF path) to two (A and B inputs), eliminating external logic gates or FPGA I/O resources. This simplifies routing, lowers BOM count, and improves timing margin - the HMC241LP3 truth table directly maps A/B states to RF1–RF4 selection without additional decode circuitry.
HMC241LP3TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- General Purpose
- Topology:
- Absorptive
- Circuit:
- SP4T
- Frequency Range:
- 0Hz ~ 4GHz
- Isolation:
- 30dB
- Insertion Loss:
- 1.2dB
- Test Frequency:
- 4GHz
- P1dB:
- 26dBm
- IIP3:
- 45dBm (min)
- Features:
- -
- Impedance:
- 50Ohm
- Voltage - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
HMC241LP3TR FAQ
1.How can I place an order for HMC241LP3TR through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC241LP3TR 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 HMC241LP3TR reliable?
The price and inventory of HMC241LP3TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC241LP3TR is usually 5 days.
3.What payment methods are accepted for HMC241LP3TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC241LP3TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC241LP3TR?
HMC241LP3TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC241LP3TR 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 HMC241LP3TR?
For technical support, including HMC241LP3TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC241LP3TR requirements.
6.How does Aetrix verify that HMC241LP3TR is sourced from the original manufacturer or authorized distributors?
All HMC241LP3TR 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 HMC241LP3TR meets industry standards.
7.What is the process for return or replacement of HMC241LP3TR?
All HMC241LP3TR units undergo pre-shipment inspection (PSI). If there is an issue with HMC241LP3TR, 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 HMC241LP3TR part is unused and in its original packaging.
Return procedure for HMC241LP3TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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