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Analog Devices Inc. HMC446TR
- Part No.:
- HMC446TR
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Switches
- Package:
- SOT-23-6
- Datasheet:
-
HMC446TR.pdf
- Description:
- IC RF SWITCH SPDT 894MHZ SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,679
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Product details
Overview
HMC446TR from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC SPDT T/R switch for 824–894 MHz cellular bands, delivering +40 dBm P0.1dB on Tx, +65 dBm IIP3, and 0.6 dB typical insertion loss in an ultra-small SOT-26 package. It serves as the RF front-end transmit/receive path selector in high-power portable transceivers.
For engineers reviewing the HMC446TR datasheet, HMC446TR pinout, HMC446TR application, or HMC446TR equivalent, key selection criteria include its 10W RF handling capability, positive 0/+8 V control logic, reflective open-circuit Tx-off state, reflective short-circuit Rx-off state, and requirement for external DC blocking capacitors and series inductors per application circuit.
Technical Context
The HMC446TR implements a monolithic GaAs pHEMT-based SPDT architecture with integrated bias control circuitry enabling single-supply operation (Vdd = +5 to +8 V) and low-current positive-voltage switching (Vctl = 0 or Vdd). Its Tx port exhibits reflective open behavior when off, while the Rx port presents a reflective short - critical for impedance-matching stability in TDD systems.
Operation requires external 330 pF DC-blocking capacitors at RFC, Tx, and Rx ports, plus series inductors (22 nH on Tx–RFC, 8.2 nH on Rx–RFC) to establish proper RF choke paths and DC bias isolation. The device is specified for −40°C to +85°C operation with MSL1 moisture sensitivity rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 824–894 MHz - optimized for North American cellular uplink (824–849 MHz) and downlink (869–894 MHz) bands |
| Insertion Loss (Tx–RFC) | 0.6 dB typ - enables minimal RF power loss in high-efficiency transmit paths |
| IIP3 (Tx) | +65 dBm - supports linear operation with two-tone +19 dBm inputs in high-dynamic-range base stations |
| P0.1dB (Tx) | +40 dBm - handles 10 W peak RF power without compression in booster amplifier output stages |
| Isolation (RFC–Rx) | 29 dB min - prevents receiver desensitization during high-power transmission |
| Switching Speed | tRISE/tFALL = 4 ns - supports fast TDD frame transitions in LTE/WCDMA protocols |
| Control Logic | Positive 0/+8 V - compatible with standard HC-series logic buffers without level-shifting |
Pinout & Package
Package: SOT-26 (6-lead), low-stress injection-molded plastic, Sn/Pb lead finish, MSL1 rated, 235 °C max reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Tx) | Transmit RF port | DC-coupled 50 Ω port; reflective open when off; requires 330 pF DC block and 22 nH series inductor to RFC |
| 2 (GND) | RF ground | Must be soldered directly to PCB RF ground plane with multiple vias for low-inductance return path |
| 3 (Vctl) | Control voltage input | Logic-selects path: 0 V → Tx ON/Rx OFF; Vdd → Tx OFF/Rx ON; ±0.2 V tolerance |
| 4 (Rx) | Receive RF port | DC-coupled 50 Ω port; reflective short when off; requires 330 pF DC block and 8.2 nH series inductor to RFC |
| 5 (Vdd) | Supply voltage | +5.0 to +8.0 V DC supply; powers internal bias network and switch FETs |
| 6 (RFC) | Common RF port | DC-coupled 50 Ω antenna interface; shared path between Tx and Rx; requires 330 pF DC block |
Key Features
| Feature | Design Value |
|---|---|
| 10W RF Power Handling | Supports +40 dBm P0.1dB on Tx port - suitable for cellular repeater and automotive telematics transmitter output stages |
| Reflective Off-State Topology | Tx port open-circuits and Rx port short-circuits when disabled - preserves system impedance stability without external termination |
| Ultra-Small SOT-26 Footprint | Minimizes PCB area in space-constrained handset and module designs while maintaining thermal performance via direct ground-lead soldering |
| Single Positive Supply Control | Eliminates need for negative or dual supplies - simplifies power management in battery-operated portable systems |
| High Linearity (IIP3) | +65 dBm IIP3 on Tx ensures minimal intermodulation distortion in multi-carrier cellular environments |
Applications
| Cellular Booster Systems | Automotive Telematics Units |
|---|---|
Use Scenario: Bidirectional signal amplification in building-mounted cellular repeaters operating across 824–894 MHz bands. IC Role / Device Role / Timing Role: T/R switch routing amplified uplink signals to antenna and downlink signals to receiver LNA. Use Value: 0.6 dB Tx insertion loss preserves amplifier efficiency; +40 dBm P0.1dB withstands full 10W output without compression. | Use Scenario: Integrated cellular/V2X communication module in automotive infotainment and emergency call (eCall) systems. IC Role / Device Role / Timing Role: Antenna sharing switch between LTE modem transmitter and GNSS/receiver front-end. Use Value: Reflective open/short off-states prevent antenna detuning; 29 dB RFC–Rx isolation protects sensitive GPS receivers from TX leakage. |
| ISM Band Portable Radios | Mobile Radio Transceivers |
Use Scenario: Compact handheld radios operating in 868–870 MHz ISM band with integrated TDD protocol. IC Role / Device Role / Timing Role: High-isolation RF path selector enabling rapid transmit/receive switching in half-duplex operation. Use Value: 4 ns tRISE/tFALL supports sub-100 μs TDD guard intervals; +65 dBm IIP3 maintains signal clarity under strong adjacent-channel interference. | Use Scenario: Professional land-mobile radio (LMR) units requiring robust front-end switching in harsh RF environments. IC Role / Device Role / Timing Role: Transmit/receive path isolation element between PA output and LNA input in shared-antenna architecture. Use Value: 22 dB Tx–RFC isolation prevents PA self-excitation; −40°C to +85°C operating range ensures reliability in vehicle-mounted deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT T/R switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Qorvo QM11025 | Higher frequency range (700–2700 MHz), lower P0.1dB (+35 dBm), same SOT-26 package | Broader band coverage but reduced power handling; requires different external matching | Preferred for multi-band handsets where 824–894 MHz is one of several supported bands |
| Skyworks SKY13372-374LF | Lower frequency range (400–2700 MHz), higher isolation (35 dB), +37 dBm P0.1dB, QFN-6 package | Superior isolation and smaller footprint, but incompatible pinout and no reflective off-state topology | Selected when board redesign allows QFN layout and system design prioritizes Rx protection over impedance stability |
Compared with QM11025 and SKY13372-374LF, the HMC446TR delivers uniquely high +40 dBm P0.1dB within its native 824–894 MHz band and retains reflective off-state behavior essential for impedance-controlled TDD systems - making it irreplaceable in legacy cellular booster and automotive telematics designs requiring proven 10W operation.
Availability
HMC446TR is available at Aetrix Electronics and suitable for cellular booster systems, automotive telematics units, and mobile radio transceivers requiring stable component supply and long-term lifecycle support.
Supply support for HMC446TR 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, Inc. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and RF technologies for communications, industrial, and automotive markets.
The HMC446TR belongs to the former Hittite Microwave GaAs MMIC switch product line, engineered specifically for high-power, high-linearity T/R switching in licensed cellular and ISM band infrastructure and portable equipment.
FAQ
What is the maximum RF input power the HMC446TR can handle continuously?
The HMC446TR supports +40 dBm (10 W) P0.1dB on the Tx port and +30 dBm on the Rx port at 824–894 MHz with Vdd = +8 V. Continuous operation above +36 dBm into Tx or +27 dBm into Rx is prohibited per datasheet absolute maximum ratings to avoid permanent damage or parametric shift.
Does the HMC446TR require external DC blocking capacitors and inductors?
Yes - the HMC446TR requires three 330 pF DC-blocking capacitors (at RFC, Tx, and Rx) and two series inductors (22 nH from Tx to RFC, 8.2 nH from Rx to RFC) to establish proper DC bias isolation and RF choke paths. These components are mandatory per the application circuit and evaluation PCB design.
What is the off-state behavior of the Tx and Rx ports on the HMC446TR?
When disabled, the Tx port presents a reflective open circuit and the Rx port presents a reflective short circuit - a deliberate design to maintain system impedance integrity without external terminations. This behavior is confirmed in the functional description and truth table of the HMC446TR datasheet.
Is the HMC446TR pin-compatible with the HMC446E variant?
Yes - the HMC446TR and HMC446E share identical pinout, electrical specifications, and SOT-26 package dimensions. The HMC446E is the RoHS-compliant version with matte tin lead finish and 260 °C reflow rating, while the HMC446TR uses Sn/Pb finish and 235 °C reflow limit.
What control voltage range is valid for reliable switching of the HMC446TR?
The HMC446TR accepts Vctl = 0 V (for Tx ON/Rx OFF) or Vctl = Vdd (for Tx OFF/Rx ON), where Vdd is +5.0 to +8.0 V ±0.2 V. Control voltage tolerances are strictly ±0.2 Vdc; voltages outside this window may cause incomplete switching or increased current consumption in the HMC446TR.
HMC446TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- ISM
- Topology:
- Reflective
- Circuit:
- SPDT
- Frequency Range:
- 824MHz ~ 894MHz
- Isolation:
- 35dB
- Insertion Loss:
- 0.6dB
- Test Frequency:
- 894MHz
- P1dB:
- -
- IIP3:
- 65dBm
- Features:
- -
- Impedance:
- 50Ohm
- Voltage - Supply:
- 5V ~ 8V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
HMC446TR FAQ
1.How can I place an order for HMC446TR through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC446TR 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 HMC446TR reliable?
The price and inventory of HMC446TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC446TR is usually 5 days.
3.What payment methods are accepted for HMC446TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC446TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC446TR?
HMC446TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC446TR 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 HMC446TR?
For technical support, including HMC446TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC446TR requirements.
6.How does Aetrix verify that HMC446TR is sourced from the original manufacturer or authorized distributors?
All HMC446TR 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 HMC446TR meets industry standards.
7.What is the process for return or replacement of HMC446TR?
All HMC446TR units undergo pre-shipment inspection (PSI). If there is an issue with HMC446TR, 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 HMC446TR part is unused and in its original packaging.
Return procedure for HMC446TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HMC446TR Tags
-
BGS13SN8E6327XTSA1
Infineon Technologies
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BGS12WN6E6327XTSA1
Infineon Technologies
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BGS12P2L6E6327XTSA1
Infineon Technologies
-
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.
-
SKY13351-378LF
Skyworks Solutions Inc.
-
AS215-92LF
Skyworks Solutions Inc.
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