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Analog Devices Inc. HMC253ALC4TR-R5
- Part No.:
- HMC253ALC4TR-R5
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Switches
- Package:
- 24-TFQFN Exposed Pad
- Datasheet:
-
HMC253ALC4TR-R5.pdf
- Description:
- IC RF SWITCH SP8T 3.5GHZ 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,495
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Product details
Overview
HMC253ALC4TR-R5 from Analog Devices (acquired Hittite Microwave) is a GaAs MIMIC SP8T non-reflective RF switch in a 4×4 mm ceramic SMT package, operating from DC to 3.5 GHz with 1.6 dB typical insertion loss, 34 dB isolation at 3.0 GHz, and TTL/CMOS-compatible 3-bit control (A/B/C) enabling single +5 V supply operation. It serves as a compact replacement for multi-switch configurations in cellular infrastructure front-ends.
For engineers reviewing the HMC253ALC4TR-R5 datasheet, HMC253ALC4TR-R5 pinout, HMC253ALC4TR-R5 application, or HMC253ALC4TR-R5 equivalent, key selection criteria include its non-reflective topology, integrated 3:8 decoder, DC–3.5 GHz bandwidth, +24 dBm input P1dB, and RoHS-compliant 24-pin ceramic package with exposed ground paddle.
Technical Context
The HMC253ALC4TR-R5 implements a monolithic GaAs-based SP8T architecture with integrated 3:8 TTL/CMOS decoder, eliminating external logic and reducing control line count to three (CTLA, CTLB, CTLC). Its non-reflective design terminates all off-state paths to 50 Ω, ensuring minimal signal reflection during switching.
It operates with a single +5 Vdc ±10% bias (Vdd), draws 4.5 mA typical supply current, and supports full RF port DC coupling-requiring external blocking capacitors at RFC and all eight RF ports. Switching speed is characterized by 30 ns rise/fall time and 100 ns turn-on/turn-off delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | DC to 3.5 GHz - enables broadband use across cellular, WiMAX, and military bands without band switching. |
| Insertion Loss | 1.6 dB typ. @ DC–3.0 GHz - minimizes signal attenuation in active path, preserving system noise figure and gain budget. |
| Isolation | 34 dB min. @ DC–3.0 GHz - ensures strong off-state signal rejection between selected and unselected RF paths. |
| Input P1dB | +24 dBm @ 0.5–3.5 GHz - supports high-power transmit applications such as base station PA output switching. |
| IIP3 | +43 dBm typ. @ 0.5–3.5 GHz - maintains linearity under two-tone conditions, critical for multi-carrier LTE/WiMAX systems. |
| Control Interface | TTL/CMOS 3-bit (A/B/C) with 0/+3 V logic - directly interfaces with FPGA or baseband processor GPIOs without level-shifting. |
| Supply Voltage | +5 Vdc ±10% - simplifies power delivery using standard telecom voltage rails. |
Pinout & Package
Ceramic 4×4 mm leadless SMT package (24-pin) with exposed ground paddle requiring solder connection to PCB RF ground plane per datasheet Note 6. Package material: alumina; plating: 30–80 µin gold over ≥50 µin nickel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7, 12, 14, 16, 18, 20, 21, 23 | GND | RF and DC ground terminals; all must be connected to low-inductance PCB ground plane to ensure return path integrity and thermal dissipation. |
| 2, 4, 6, 13, 15, 17, 19, 22, 24 | RF1–RF8 & RFC | DC-coupled 50 Ω RF ports; require external DC-blocking capacitors (e.g., 100 pF 0402) per application note. |
| 8 | Vdd | +5 Vdc supply input; bypassed internally and externally to minimize RF supply noise coupling into switch core. |
| 9, 10, 11 | CTLC, CTLB, CTLA | 3-bit TTL/CMOS control inputs; logic state determines RFC-to-RF1–RF8 path selection per truth table (active-high decode). |
Key Features
| Feature | Design Value |
|---|---|
| Non-reflective topology | Terminates all off-state RF ports to 50 Ω, preventing signal reflections that degrade VSWR and cause instability in PA or filter cascades. |
| Integrated 3:8 decoder | Reduces required control lines from 8 to 3, eliminating external logic ICs and saving board space in dense RF modules. |
| Single +5 V supply | Eliminates need for negative or dual supplies, simplifying power architecture and reducing BOM count in telecom and military designs. |
| RoHS-compliant ceramic package | 4×4 mm SMT footprint with exposed ground paddle enables repeatable RF performance and thermal management up to +85 °C ambient. |
| DC–3.5 GHz operation | Covers all major licensed and unlicensed bands including 700 MHz LTE, 2.3–2.7 GHz WiMAX, 3.3–3.8 GHz CBRS, and L/S-band radar. |
Applications
| Basestations & Repeaters | WiMAX/WiBro Infrastructure |
|---|---|
Use Scenario: Front-end antenna switching in macrocell and small-cell base stations supporting multi-band, multi-mode operation. IC Role / Device Role / Timing Role: SP8T RF switch routing transmit/receive signals between transceivers and antenna arrays or diplexers. Use Value: Enables dynamic antenna path selection with 1.6 dB loss and 34 dB isolation, maintaining EVM and ACLR compliance across LTE and 5G NR bands. | Use Scenario: Frequency-agile front-end in fixed wireless access (FWA) customer premises equipment (CPE) and base station radios. IC Role / Device Role / Timing Role: Wideband RF path selector handling 2.3–2.7 GHz and 3.3–3.8 GHz channels with simultaneous Tx/Rx isolation. Use Value: Non-reflective behavior prevents impedance mismatch-induced distortion in OFDMA-based WiMAX systems operating near compression. |
| Cellular/3G Infrastructure | Military & Hi-Rel Communications |
Use Scenario: Diversity receive switching and TDD/FDD mode reconfiguration in legacy UMTS and CDMA baseband subsystems. IC Role / Device Role / Timing Role: High-isolation SP8T switch managing multiple Rx chains and calibration paths in multi-antenna receiver modules. Use Value: 30 dB isolation at 3.5 GHz ensures adjacent-channel interference suppression in crowded spectrum environments. | Use Scenario: Reconfigurable front-end in tactical radios and EW systems requiring wide temperature operation and ESD robustness. IC Role / Device Role / Timing Role: Radiation-tolerant, Class 1A ESD-rated RF switch supporting rapid frequency hopping and secure channel switching. Use Value: -40 °C to +85 °C operating range and 150 °C channel temperature rating enable deployment in harsh environmental enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SP8T RF switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Qorvo QM11036 | Si-based SP8T, 0.1–3.8 GHz, 1.8 dB IL, 30 dB isolation, requires dual supply (+5 V & –5 V) | Lacks integrated decoder; needs external logic; lower ESD rating (Class 1B) | Preferred where cost sensitivity outweighs layout simplicity and ESD robustness. |
| Skyworks SKY13372-374LF | SP8T, 0.05–3.5 GHz, 1.7 dB IL, 32 dB isolation, +3.3 V supply only, no integrated decoder | Requires 8 control lines; smaller 3×3 mm QFN package; no exposed paddle | Selected when board area is constrained and external decoding is already present in system architecture. |
Compared with QM11036 and SKY13372-374LF, the HMC253ALC4TR-R5 offers superior integration (on-die 3:8 decoder), higher isolation at 3.0 GHz, and stronger ESD protection-making it optimal for new telecom infrastructure designs prioritizing reliability and reduced component count.
Availability
HMC253ALC4TR-R5 is available at Aetrix Electronics and suitable for basestations & repeaters, WiMAX/WiBro infrastructure, and military communications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for HMC253ALC4TR-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 and integrates its high-frequency RF expertise into ADI's broader portfolio of RF, microwave, and millimeter-wave solutions.
The HMC253ALC4TR-R5 belongs to Hittite's GaAs MIMIC SPnT switch product line, engineered specifically for wideband, high-isolation, non-reflective RF path selection in cellular infrastructure, defense electronics, and broadband wireless systems.
FAQ
What is the operating temperature range for the HMC253ALC4TR-R5?
The HMC253ALC4TR-R5 is specified for operation from –40 °C to +85 °C ambient temperature. Its GaAs die and ceramic package support reliable performance across this range, with thermal resistance of 183 °C/W (through path) and 274 °C/W (termination path) enabling effective heat dissipation when the exposed ground paddle is properly soldered to the PCB ground plane. This makes the HMC253ALC4TR-R5 suitable for outdoor basestation and military-grade enclosures.
Does the HMC253ALC4TR-R5 require external DC-blocking capacitors?
Yes, the HMC253ALC4TR-R5 requires external DC-blocking capacitors at all RF ports (RFC, RF1–RF8) because all RF pins are DC-coupled and matched to 50 Ω. The datasheet specifies 100 pF 0402 capacitors on the EV1HMC253ALC4 evaluation board. Omitting these capacitors risks DC bias interaction between stages and may cause malfunction or damage in cascaded RF architectures.
What is the control logic voltage compatibility of the HMC253ALC4TR-R5?
The HMC253ALC4TR-R5 supports true TTL/CMOS-compatible control inputs (CTLA, CTLB, CTLC) with logic-low ≤ +0.8 Vdc and logic-high ≥ +2.0 Vdc, operating within a 0/+3 V swing. It accepts direct connection to FPGA or microcontroller GPIOs without level shifters. Control current is low: <1 µA in low state and ~60 µA in high state, minimizing drive burden on digital controllers.
How does the integrated 3:8 decoder affect PCB layout for the HMC253ALC4TR-R5?
The integrated 3:8 decoder in the HMC253ALC4TR-R5 reduces required control traces from eight to three (CTLA, CTLB, CTLC), significantly simplifying routing in high-density RF modules. This eliminates external decoder ICs and associated passives, freeing board area and reducing parasitic inductance/capacitance that could degrade switching speed or cause logic glitches. Layout must still maintain clean, short, and well-grounded control lines to avoid noise coupling into sensitive RF paths.
Can the HMC253ALC4TR-R5 replace discrete SP4T or SPDT switch combinations?
Yes, the HMC253ALC4TR-R5 is explicitly designed to replace multiple SP4T and SPDT MMIC switches in complex RF front-ends. Its SP8T configuration with non-reflective topology, integrated decoder, and DC–3.5 GHz bandwidth consolidates functionality while improving isolation (34 dB vs. typical 25–30 dB for cascaded SPDTs) and reducing insertion loss accumulation. System-level validation is recommended, but the HMC253ALC4TR-R5 has been deployed in production basestation designs for this purpose.
HMC253ALC4TR-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:
- WiMax
- Topology:
- Absorptive
- Circuit:
- SP8T
- Frequency Range:
- 0Hz ~ 3.5GHz
- Isolation:
- 43dB
- Insertion Loss:
- 1.1dB
- Test Frequency:
- 2GHz
- P1dB:
- -
- IIP3:
- 43dBm
- Features:
- -
- Impedance:
- 50Ohm
- Voltage - Supply:
- 5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (4x4)
HMC253ALC4TR-R5 FAQ
1.How can I place an order for HMC253ALC4TR-R5 through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC253ALC4TR-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 HMC253ALC4TR-R5 reliable?
The price and inventory of HMC253ALC4TR-R5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC253ALC4TR-R5 is usually 5 days.
3.What payment methods are accepted for HMC253ALC4TR-R5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC253ALC4TR-R5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC253ALC4TR-R5?
HMC253ALC4TR-R5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC253ALC4TR-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 HMC253ALC4TR-R5?
For technical support, including HMC253ALC4TR-R5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC253ALC4TR-R5 requirements.
6.How does Aetrix verify that HMC253ALC4TR-R5 is sourced from the original manufacturer or authorized distributors?
All HMC253ALC4TR-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 HMC253ALC4TR-R5 meets industry standards.
7.What is the process for return or replacement of HMC253ALC4TR-R5?
All HMC253ALC4TR-R5 units undergo pre-shipment inspection (PSI). If there is an issue with HMC253ALC4TR-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 HMC253ALC4TR-R5 part is unused and in its original packaging.
Return procedure for HMC253ALC4TR-R5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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