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Analog Devices Inc. HMC348LP3E
- Part No.:
- HMC348LP3E
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Switches
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
HMC348LP3E.pdf
- Description:
- IC RF SWITCH SPDT 2.5GHZ 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,167
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Product details
Overview
HMC348LP3E from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC SPDT non-reflective switch optimized for CATV signal routing in 75 Ω and 50 Ω systems, operating from DC to 2.5 GHz with 0.7 dB typical insertion loss at 1 GHz, >55 dB isolation up to 1 GHz, and integrated 75 Ω terminations enabling true "all off" state functionality.
For engineers reviewing the HMC348LP3E datasheet, HMC348LP3E pinout, HMC348LP3E application, or HMC348LP3E equivalent, this device is selected for high-isolation RF path switching in cable modem headend infrastructure, DBS IF routing, and 50 Ω test equipment where low-frequency isolation down to 5 MHz and +5 V complementary logic control are critical design requirements.
Technical Context
The HMC348LP3E implements a GaAs MESFET-based SPDT architecture with non-reflective topology, integrating on-die 75 Ω terminations to support simultaneous RF port isolation in all control states-including dual-low "all off". Its complementary +5 V / 0 V control interface drives internal FETs without external level-shifting.
Thermal design relies on a 3×3 mm QFN package with exposed paddle requiring direct PCB ground connection; thermal resistance is 104 °C/W for insertion-loss paths and 240 °C/W for terminated paths. Absolute maximum RF input power is +30 dBm, with ESD rating Class 1A (HBM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | DC – 2.5 GHz: supports full-band CATV distribution including DOCSIS upstream (5–65 MHz) and downstream (54–1002 MHz), plus DBS IF (950–2150 MHz). |
| Insertion Loss | 0.7 dB typ. @ 1 GHz (50 Ω): ensures minimal signal attenuation in active RF paths, preserving SNR in cascaded amplifier stages. |
| Isolation | >55 dB @ 1 GHz (50 Ω), >80 dB @ 5 MHz: enables clean channel separation in multi-path headend switching and prevents low-frequency leakage in broadband systems. |
| Return Loss (On State) | 20 dB min. @ DC–2.5 GHz: guarantees stable impedance match across full bandwidth, reducing reflections in 50/75 Ω hybrid systems. |
| Control Logic | +5 V / 0 V complementary inputs (A/B): eliminates need for external translators; compatible with standard TTL/CMOS drivers. |
| Supply Voltage | +5.0 V ±10% (Vdd), 1.1 mA typ.: enables low-power operation in space-constrained CATV modules with minimal heat dissipation. |
| Package | 3×3 mm, 16-pin QFN with exposed paddle: RoHS-compliant matte Sn finish, MSL1 rating, requires soldered ground paddle for RF performance and thermal integrity. |
Pinout & Package
Package: 3×3 mm, 16-lead leadless QFN with exposed thermal paddle (RoHS-compliant matte Sn finish, MSL1). All ground leads (Pins 2,4,5,6,9,12,15,16) and paddle must be soldered to PCB RF ground per Hittite Application Note.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vdd | +5 V ±10% bias supply; decoupling capacitor required near pin to suppress supply noise affecting switch linearity. |
| 3, 7, 14 | RFC, RF1, RF2 | DC-coupled 75 Ω RF ports; require external blocking capacitors (e.g., 3300 pF for <500 MHz operation) to maintain low-frequency isolation. |
| 8, 13 | ACG1, ACG2 | AC ground terminals for internal termination networks; connect to RF ground via external capacitors sized per target frequency band. |
| 10, 11 | B, A | Complementary digital control inputs; "High" = +2.0 to +5.0 V (35 µA typ.), "Low" = 0 to +0.8 V (5 µA typ.) per truth table. |
| 2,4,5,6,9,12,15,16 | N/C | No-connect pins electrically tied to die ground; must be soldered to PCB RF ground plane to maximize isolation and thermal conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Non-reflective SPDT architecture | Integrated 75 Ω terminations enable true "all off" state with >45 dB isolation at 2.5 GHz-critical for preventing signal leakage in unselected paths. |
| DC–2.5 GHz broadband operation | Covers full CATV spectrum (5–1002 MHz), DBS IF (950–2150 MHz), and cellular test bands without re-tuning or external matching. |
| 75 Ω & 50 Ω system compatibility | Validated performance in both impedance domains allows reuse across cable infrastructure (75 Ω) and lab/test gear (50 Ω) without redesign. |
| +5 V complementary logic interface | Eliminates level-shifters and reduces BOM count; supports direct interfacing with FPGA GPIOs or microcontroller I/Os driving 35 µA max load. |
| Class 1A ESD protection | Withstands ≥250 V HBM-enables safe handling during manual assembly and field replacement in serviceable CATV nodes. |
Applications
| CATV Signal Distribution | Cable Modem Headend |
|---|---|
|
Use Scenario: Routing downstream signals between multiple amplifiers or splitters in node-level distribution cabinets. IC Role / Device Role / Timing Role: SPDT RF path selector managing active/passive redundancy and signal conditioning chains. Use Value: >55 dB isolation at 1 GHz prevents crosstalk between parallel amplifier outputs, maintaining MER >38 dB in DOCSIS 3.1 deployments. |
Use Scenario: Switching upstream return-path signals from multiple subscriber groups into shared upstream receivers. IC Role / Device Role / Timing Role: Low-insertion-loss RF gate enabling dynamic bandwidth allocation across upstream channels (5–65 MHz). Use Value: 0.7 dB insertion loss preserves upstream SNR margin, supporting higher-order QAM modulation under noisy ingress conditions. |
| DBS IF Switching | 50 Ω Test Equipment |
|
Use Scenario: Selecting between LNB outputs (vertical/horizontal polarization) in satellite receiver front-ends. IC Role / Device Role / Timing Role: Non-reflective SPDT switch ensuring continuous 75 Ω termination during polarity transitions to avoid LO pulling. Use Value: >80 dB isolation at 5 MHz suppresses low-frequency hum and power-supply coupling in sensitive IF stages. |
Use Scenario: Automated RF path selection in vector network analyzer (VNA) calibration modules and signal generator routing. IC Role / Device Role / Timing Role: High-reliability switching element in metrology-grade test fixtures requiring repeatable S-parameter stability. Use Value: 20 dB return loss across DC–2.5 GHz ensures minimal mismatch uncertainty (<0.05 dB magnitude error) in calibrated measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT RF switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Qorvo QM11036 | Si-based SPDT, 50–6000 MHz, 0.5 dB IL @ 1 GHz, but no integrated 75 Ω terminations; requires external termination resistors. | Optimized for 50 Ω cellular infrastructure; lacks native 75 Ω CATV compliance and low-frequency isolation below 50 MHz. | Prefer when wideband 50 Ω switching above 6 GHz is needed; not suitable for legacy CATV headend where 75 Ω matching and sub-50 MHz isolation are mandatory. |
| Skyworks SKY13370-374LF | GaAs pHEMT SPDT, DC–3000 MHz, 0.45 dB IL @ 1 GHz, but reflective design-no "all off" state; 40 dB isolation @ 1 GHz. | Targeted at mobile handset antenna switching; lacks integrated terminations and fails to meet CATV isolation specs (>55 dB @ 1 GHz). | Select only for space-constrained 50 Ω portable devices; unsuitable for CATV/DBS where non-reflective behavior and >55 dB isolation are required. |
Compared with QM11036 and SKY13370-374LF, the HMC348LP3E uniquely delivers integrated 75 Ω terminations, >55 dB isolation up to 1 GHz, and verified DC–2.5 GHz performance in both 50 Ω and 75 Ω systems-making it the only drop-in solution for legacy and hybrid CATV infrastructure upgrades.
Availability
HMC348LP3E is available at Aetrix Electronics and suitable for CATV signal distribution, cable modem headend infrastructure, and DBS IF switching requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing traceability.
Supply support for HMC348LP3E 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 GaAs, GaN, and SiGe MMIC solutions for communications, defense, and instrumentation markets.
The HMC348LP3E belongs to Hittite's legacy CATV switch product line, engineered specifically for broadband RF path selection in 75 Ω cable infrastructure with emphasis on low-frequency isolation, non-reflective operation, and +5 V logic compatibility.
FAQ
What is the operating temperature range for the HMC348LP3E?
The HMC348LP3E operates over −40 °C to +85 °C ambient temperature. This range supports deployment in outdoor cable node enclosures and indoor headend racks without forced cooling. The device's thermal resistance (104 °C/W on insertion path) ensures junction temperature remains within safe limits at 1.1 mA supply current and typical RF power levels.
Does the HMC348LP3E require external blocking capacitors on its RF ports?
Yes, the HMC348LP3E requires external DC-blocking capacitors on RFC, RF1, and RF2 pins because all three RF ports are DC-coupled. For optimal isolation below 500 MHz, 3300 pF 0402 capacitors are recommended; for operation above 500 MHz, 100–300 pF values suffice. These capacitors form part of the low-frequency termination network.
How does the "all off" state function in the HMC348LP3E?
The HMC348LP3E achieves "all off" when both control inputs A and B are low (0 V), activating internal 75 Ω terminations on all RF ports. This non-reflective state provides >45 dB isolation at 2.5 GHz and >80 dB at 5 MHz-unlike reflective switches that leave ports unterminated and cause impedance discontinuities.
What is the maximum RF input power the HMC348LP3E can handle?
The HMC348LP3E has an absolute maximum RF input power rating of +30 dBm. At 1000 MHz, its input P1dB is 25 dBm (typ.) and IIP3 is +48 dBm, confirming robust linearity for CATV applications with multi-carrier signals. Derating is required above +85 °C ambient per 4 mW/°C.
Is the HMC348LP3E pin-compatible with the HMC348LP3?
Yes, the HMC348LP3E is pin- and footprint-compatible with the HMC348LP3. Both share identical 3×3 mm QFN-16 packaging, pinout, and electrical specifications. The HMC348LP3E differs only in RoHS compliance (100% matte Sn finish vs. Sn/Pb) and higher peak reflow temperature (260 °C vs. 235 °C).
HMC348LP3E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Strip
- Product Status:
- Obsolete
- RF Type:
- Cellular, CATV
- Topology:
- Absorptive
- Circuit:
- SPDT
- Frequency Range:
- 0Hz ~ 2.5GHz
- Isolation:
- 50dB
- Insertion Loss:
- 0.7dB
- Test Frequency:
- 2.5GHz
- P1dB:
- 28dBm
- IIP3:
- 51dBm
- Features:
- -
- Impedance:
- 50Ohm, 75Ohm
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QFN (3x3)
HMC348LP3E FAQ
1.How can I place an order for HMC348LP3E through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC348LP3E 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 HMC348LP3E reliable?
The price and inventory of HMC348LP3E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC348LP3E is usually 5 days.
3.What payment methods are accepted for HMC348LP3E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC348LP3E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC348LP3E?
HMC348LP3E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC348LP3E 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 HMC348LP3E?
For technical support, including HMC348LP3E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC348LP3E requirements.
6.How does Aetrix verify that HMC348LP3E is sourced from the original manufacturer or authorized distributors?
All HMC348LP3E 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 HMC348LP3E meets industry standards.
7.What is the process for return or replacement of HMC348LP3E?
All HMC348LP3E units undergo pre-shipment inspection (PSI). If there is an issue with HMC348LP3E, 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 HMC348LP3E part is unused and in its original packaging.
Return procedure for HMC348LP3E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HMC348LP3E Tags
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BGS13SN8E6327XTSA1
Infineon Technologies
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BGS12WN6E6327XTSA1
Infineon Technologies
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BGS12P2L6E6327XTSA1
Infineon Technologies
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BGS12PN10E6327XTSA1
Infineon Technologies
-
NJG1801K75-TE1
Nisshinbo Micro Devices Inc.
-
BGS14PN10E6327XTSA1
Infineon Technologies
-
SKY13348-374LF
Skyworks Solutions Inc.
-
4259-63
pSemi
-
PE42421SCAA-Z
pSemi
-
AS179-92LF
Skyworks Solutions Inc.
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SKY13351-378LF
Skyworks Solutions Inc.
-
AS215-92LF
Skyworks Solutions Inc.
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