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Analog Devices Inc. HMC545AE
- Part No.:
- HMC545AE
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Switches
- Package:
- SOT-23-6
- Datasheet:
-
HMC545AE.pdf
- Description:
- IC RF SWITCH SPDT 3GHZ SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,781
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Product details
Overview
HMC545AE from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC SPDT RF switch in SOT26 package, designed for DC–3 GHz signal routing in RF front-ends. It delivers 0.27 dB typical insertion loss at DC–1.0 GHz, +54 dBm input IP3 at 0/+5 V control, and operates with positive CMOS/TTL-compatible control voltages (0/+3 V to 0/+8 V).
For engineers reviewing the HMC545AE datasheet, HMC545AE pinout, HMC545AE application, or HMC545AE equivalent, this page provides verified specifications, truth-table–validated switching behavior, package dimensions, thermal ratings, and real-world RF performance data across frequency, power, and temperature.
Technical Context
The HMC545AE implements a reflective GaAs MMIC architecture where RF1 and RF2 present reflective shorts when "Off", enabling low-loss, high-isolation switching without external termination. Its dual-control logic (pins A/B) supports direct CMOS/TTL interfacing with supply-independent biasing (0/+3 V to 0/+8 V).
Designed for IF/RF path selection in compact wireless systems, it maintains stable RF performance from –40 °C to +85 °C, features ESD protection (HBM Class 1A), and requires DC blocking capacitors on all RF ports (RFC, RF1, RF2) per layout guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | DC to 3.0 GHz - supports full-band cellular (700 MHz–2.7 GHz), ISM (2.4 GHz), and WiMAX (2.3–2.7 GHz) applications without retuning. |
| Insertion Loss (DC–1.0 GHz) | 0.27 dB typ - enables minimal signal attenuation in receiver LNA bypass or filter bank switching paths. |
| Input IP3 (0/+5 V) | +54 dBm - ensures linearity in multi-tone environments like base station transceivers and test equipment. |
| Isolation (DC–2.0 GHz) | 26–31 dB - suppresses crosstalk between antenna diversity paths or transmit/receive isolation in T/R modules. |
| Switching Speed (tON/tOFF) | 90 ns - supports fast time-division duplex (TDD) and burst-mode operation in portable radios and LTE handsets. |
| Control Voltage Range | 0/+3 V to 0/+8 V - allows direct interface with HC/HCT logic families and flexible biasing for power-sensitive designs. |
| Operating Temperature | –40 °C to +85 °C - qualified for automotive telematics, industrial wireless sensors, and outdoor infrastructure. |
Pinout & Package
Package: RoHS-compliant SOT26 (6-lead plastic), 100% matte Sn lead finish, MSL1 rating, max reflow temperature 260 °C. Dimensions per Hittite outline drawing: 2.9 mm × 1.6 mm × 1.1 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RF2 | RF output port; DC-coupled, 50 Ω matched; requires external DC blocking capacitor. |
| 2 | GND | RF/DC ground reference; must be soldered directly to PCB ground plane for optimal RF return path. |
| 3 | RF1 | RF output port; DC-coupled, 50 Ω matched; requires external DC blocking capacitor. |
| 4 | B | Logic control input; defines switch state per truth table (Low = Off, High = On for RF2 path). |
| 5 | RFC | Common RF input port; DC-coupled, 50 Ω matched; requires external DC blocking capacitor. |
| 6 | A | Logic control input; defines switch state per truth table (Low = Off, High = On for RF1 path). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low insertion loss | 0.27 dB typ @ DC–1 GHz - reduces cascaded noise figure in LNA/PA switching networks. |
| High linearity | +54 dBm input IP3 @ 0/+5 V - preserves signal integrity in multi-carrier baseband and wideband receivers. |
| CMOS/TTL-compatible control | 0/+3 V to 0/+8 V logic thresholds - eliminates level-shifting circuitry in FPGA- or MCU-driven RF subsystems. |
| Reflective OFF-state design | RF1/RF2 present short circuits when inactive - simplifies PCB layout by removing need for external 50 Ω terminations. |
| Thermal robustness | 150 °C channel temperature rating and 169 °C/W θJA - supports sustained operation in sealed enclosures and high-power density modules. |
Applications
| Cellular/3G Infrastructure | WLAN/WiMAX Front-End |
|---|---|
Use Scenario: Antenna diversity switching in macrocell BTS transceivers operating across 700–2700 MHz bands. IC Role / Device Role / Timing Role: SPDT RF switch selecting between two receive paths to maximize SNR via spatial diversity. Use Value: 0.27 dB insertion loss preserves LNA gain margin; +54 dBm IP3 prevents intermodulation distortion from adjacent carriers. |
Use Scenario: Dual-band (2.4 GHz + 5 GHz) WLAN access point with shared PA/LNA and separate antenna arrays. IC Role / Device Role / Timing Role: RF path selector routing signals between band-specific filters and transceivers. Use Value: Reflective OFF-state eliminates need for external 50 Ω terminations, reducing BOM count and board area. |
| Automotive Telematics | Portable Radio Handsets |
Use Scenario: GNSS + cellular (LTE-V2X) coexistence in vehicle infotainment modules requiring simultaneous GPS reception and LTE transmission. IC Role / Device Role / Timing Role: Low-loss RF switch isolating GNSS LNA input during LTE transmit bursts. Use Value: 31 dB isolation @ DC–2 GHz prevents LTE harmonics from desensitizing GPS front-end; –40 °C to +85 °C rating ensures reliability under hood conditions. |
Use Scenario: Transmit/receive switching in private mobile radio (PMR) handsets supporting analog FM and digital DMR modes. IC Role / Device Role / Timing Role: Fast-switching SPDT controlling RF path between antenna, PA, and receiver chain. Use Value: 90 ns tON/tOFF enables sub-100 µs TDD transitions required by DMR Tier II protocol timing. |
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 | 0.35 dB IL @ 2.4 GHz; 0/+2.75 V control; integrated DC blocking caps; 2.0 × 1.3 mm QFN-6 | Optimized for 2.4 GHz ISM/Wi-Fi; lower voltage control limits MCU compatibility | Prefer for space-constrained Wi-Fi 6 modules where integrated DC blocks reduce component count. |
| Skyworks SKY13370-374LF | 0.45 dB IL @ 2.5 GHz; 0/+3.3 V control; 1.5 × 1.5 mm 6-pin DFN; +44 dBm IP3 | Lower IP3 and higher loss than HMC545AE; rated only to +70 °C ambient | Acceptable for cost-sensitive consumer handsets with relaxed linearity and temperature requirements. |
Compared with QM11036 and SKY13370-374LF, the HMC545AE offers superior insertion loss and IP3 across DC–3 GHz, wider control voltage flexibility (0/+3 V to 0/+8 V), and extended temperature qualification (–40 °C to +85 °C), making it preferred for infrastructure and automotive-grade designs demanding robust RF performance.
Availability
HMC545AE is available at Aetrix Electronics and suitable for cellular infrastructure, automotive telematics, and portable radio handsets requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for HMC545AE 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 RF signal chain solutions for communications, defense, and instrumentation markets.
The HMC545AE belongs to Hittite's legacy GaAs MMIC SPDT switch family, engineered for ultra-low-loss, high-linearity RF path selection in compact wireless infrastructure and portable devices.
FAQ
What is the maximum RF input power the HMC545AE can handle?
The HMC545AE supports +34 dBm continuous RF input power when control voltage is set to 0/+8 Vdc. At lower control voltages (0/+3 V or 0/+5 V), the P1dB compression point drops to +20 dBm and +27 dBm respectively. This makes the HMC545AE suitable for both low-power receiver switching and moderate-power transmit path applications depending on bias configuration.
Does the HMC545AE require external DC blocking capacitors?
Yes, the HMC545AE requires external DC blocking capacitors on all three RF ports - RFC, RF1, and RF2 - because all RF pins are DC-coupled and internally matched to 50 Ω. The capacitor value determines the lowest usable frequency; for DC–3 GHz operation, typical values range from 100 pF to 330 pF in 0402 package, as validated on Hittite's EV1HMC545A evaluation board.
What is the truth table behavior of the HMC545AE control pins A and B?
When pin A is High and pin B is Low, the HMC545AE connects RFC to RF1 (RF1 path ON). When pin A is Low and pin B is High, RFC connects to RF2 (RF2 path ON). Both pins Low or both High place both RF1 and RF2 in reflective OFF state. This behavior is confirmed in the official Hittite truth table and matches the functional diagram in the HMC545AE datasheet revision v01.0615.
Is the HMC545AE pin-compatible with the HMC545A?
Yes, the HMC545AE is pin-compatible with the HMC545A - both use identical SOT26 package footprints, pin numbering, and electrical pin functions. The primary difference is RoHS compliance: HMC545AE uses 100% matte Sn lead finish and has MSL1 rating with 260 °C peak reflow, while HMC545A uses Sn/Pb and 235 °C reflow limit. Layouts designed for HMC545A can accept HMC545AE without modification.
What thermal considerations apply to the HMC545AE in high-power operation?
The HMC545AE has a thermal resistance (θJA) of 169 °C/W and a maximum channel temperature of 150 °C. At 85 °C ambient and 0/+8 V bias, its continuous power dissipation limit is 100 mW (derated above 85 °C at 5.6 mW/°C). To maintain reliability, ensure all ground leads (pins 2, and internal package grounds) are soldered to a low-impedance RF ground plane per Hittite layout recommendations.
HMC545AE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Strip
- Product Status:
- Active
- RF Type:
- WiMax, WLAN
- Topology:
- -
- Circuit:
- SPDT
- Frequency Range:
- 0Hz ~ 3GHz
- Isolation:
- 22dB
- Insertion Loss:
- 0.4dB
- Test Frequency:
- 3GHz
- P1dB:
- 33dBm
- IIP3:
- 54dBm
- Features:
- -
- Impedance:
- 50Ohm
- Voltage - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
HMC545AE FAQ
1.How can I place an order for HMC545AE through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC545AE 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 HMC545AE reliable?
The price and inventory of HMC545AE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC545AE is usually 5 days.
3.What payment methods are accepted for HMC545AE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC545AE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC545AE?
HMC545AE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC545AE 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 HMC545AE?
For technical support, including HMC545AE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC545AE requirements.
6.How does Aetrix verify that HMC545AE is sourced from the original manufacturer or authorized distributors?
All HMC545AE 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 HMC545AE meets industry standards.
7.What is the process for return or replacement of HMC545AE?
All HMC545AE units undergo pre-shipment inspection (PSI). If there is an issue with HMC545AE, 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 HMC545AE part is unused and in its original packaging.
Return procedure for HMC545AE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HMC545AE Tags
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