HMC345LP3ETR Analog Devices Integrated Circuit (Quad Flat No-Lead) In Stock
HMC345LP3ETR is a GaAs SP4T RF switch covering DC to 8 GHz with 27 dB isolation and low insertion loss in a 16-pin QFN package. Supports single-pole four-throw antenna switching for broadband RF signal routing. From $8.50 in stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Quad Flat No-Lead
- Pin Count
- 17
- Lifecycle
- ACTIVE
- Datasheet
- HMC345LP3ETR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $58.3917(MOQ 4)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- SP4T RF switch operating from DC to 8 GHz with 27 dB port-to-port isolation across the full frequency band
- Low insertion loss and fast switching speed in a compact 16-pin QFN with exposed pad for superior thermal and RF grounding
- GaAs MMIC technology enabling broadband antenna multiplexing from DC through X-band frequencies in a single 3 mm × 3 mm footprint
Applications
HMC345LP3ETR is used in broadband antenna switch matrices, test and measurement RF multiplexers, and software-defined radio front ends that require low-loss single-pole four-throw routing from DC to 8 GHz. Its compact QFN package and GaAs process make it suitable for phased-array radar channel selection, satellite ground-station receive switches, and wideband spectrum analyzer input multiplexing.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What frequency range and isolation performance does HMC345LP3ETR deliver in an antenna switch matrix?
HMC345LP3ETR operates from DC to 8 GHz with 27 dB port-to-port isolation, ensuring that signals on unselected antenna ports are attenuated by at least 27 dB. This level of isolation prevents cross-talk between adjacent receive chains in a 4-antenna diversity system, maintaining receiver sensitivity above -90 dBm when a nearby transmitter is active on a different port.
How does HMC345LP3ETR compare to a PIN diode switch for a 2.4 GHz to 6 GHz wideband design?
HMC345LP3ETR uses a GaAs FET topology requiring only CMOS-level digital control inputs, whereas PIN diode switches need a DC bias current of 10 mA to 20 mA per diode and an RF choke network. For a 4-port switch at 2.4 GHz to 6 GHz, the HMC345LP3ETR achieves comparable insertion loss below 1.5 dB without the bias circuitry, reducing total current draw by 40 mA to 80 mA in portable equipment.
For a software-defined radio design, what control interface does HMC345LP3ETR use to select active ports?
HMC345LP3ETR uses a 2-bit binary digital control interface (V1, V2) with logic-level inputs compatible with standard 3.3 V and 5 V CMOS digital outputs. The four combinations of V1/V2 select one of the four RF ports, with switching time typically below 100 ns, which is fast enough for time-division multiplexed antenna hopping in frequency-agile SDR receivers covering DC to 8 GHz bands.
What assembly and grounding considerations apply when mounting HMC345LP3ETR in a high-frequency PCB layout?
HMC345LP3ETR's 16-pin QFN package includes an exposed thermal and RF ground pad on the underside (approximately 1.7 mm × 1.7 mm) that must be soldered to a continuous PCB ground plane for both thermal dissipation and RF performance. Via stitching around the pad at pitches below λ/20 (< 1.9 mm at 8 GHz) suppresses parasitic resonances and maintains the specified insertion loss and isolation above 6 GHz.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
More from Analog Devices
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 4+ | $67.3751 | $269.50 |
| 5+ | $65.1292 | $325.65 |
| 6+ | $58.3917 | $350.35 |
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