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Analog Devices Inc. HMC221AE
- Part No.:
- HMC221AE
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Switches
- Package:
- SOT-23-6
- Datasheet:
-
HMC221AE.pdf
- Description:
- IC RF SWITCH SPDT 3GHZ SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,294
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Product details
Overview
HMC221AE from Hittite Microwave Corporation is a GaAs MMIC SPDT RF switch in SOT26 package, operating from DC to 3 GHz with 0.4 dB typical insertion loss at 1 GHz, +45 dBm input IP3, and positive 0/+3 V control logic drawing only 3 µA. It serves as a reflective RF path selector in ISM-band front-ends, PCMCIA wireless cards, and cellular transceivers requiring minimal loss and ultra-small footprint.
For engineers reviewing the HMC221AE datasheet, HMC221AE pinout, HMC221AE application, or HMC221AE equivalent, key selection criteria include its DC–3 GHz bandwidth, reflective OFF-state (RF1/RF2 shorted), SOT26 thermal resistance of 178 °C/W, and compatibility with CMOS/TTL logic without level-shifting.
Technical Context
The HMC221AE implements a monolithic GaAs MMIC architecture with two reflective SPDT paths controlled by complementary 0/+3 V logic inputs. Its design integrates on-chip bias networks enabling direct CMOS/TTL interfacing while maintaining RF performance across DC–3 GHz.
It delivers stable switching characteristics-3 ns rise/fall time and 10 ns ON/OFF delay-with isolation >24 dB below 2 GHz and return loss >20 dB up to 1 GHz. The device requires DC blocking capacitors at all RF ports and operates over –40 to +105 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | DC to 3 GHz - supports full ISM bands (900 MHz, 2.4 GHz) and cellular bands (1.8–2.2 GHz) without external tuning. |
| Insertion Loss (1 GHz) | 0.4 dB typ - enables low-loss signal routing critical for receiver LNA and filter bypass paths. |
| Input IP3 (1 GHz) | +45 dBm typ - ensures high linearity in multi-tone environments like WLAN and LTE front-ends. |
| Isolation (1 GHz) | 28 dB typ - suppresses crosstalk between RF1 and RF2 paths during state transition. |
| Control Logic | 0/+3 V @ 3 µA - directly interfaces with HC/HCT logic families without pull-up resistors or current-limiting. |
| Thermal Resistance | 178 °C/W - allows operation at +105 °C ambient with ≤0.36 W dissipation when PCB ground leads are fully soldered. |
| ESD Rating | HBM Class 1A - mandates strict handling per JEDEC JESD22-A114 but permits standard SMT assembly with proper grounding. |
Pinout & Package
SOT26 plastic package (RoHS-compliant, matte Sn finish, MSL1, 260 °C peak reflow); 6-pin surface-mount outline with exposed paddle thermally connected to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground | RF and DC reference; must be soldered to PCB ground plane per package note #5. |
| 2 (RF1) | RF Output 1 | Reflective OFF-state (short circuit); used as antenna or filter path in TDD systems. |
| 3 (RFC) | RF Common | Primary RF input/output port; DC-blocked per application circuit requirement. |
| 4 (GND) | Ground | Secondary ground pin; electrically tied to Pin 1 internally; requires independent PCB via. |
| 5 (Vctl A) | Control Input A | Positive logic: 0 V = RF1 ON, +3 V = RF1 OFF; tolerance ±0.2 Vdc. |
| 6 (RF2) | RF Output 2 | Reflective OFF-state (short circuit); complements RF1 for dual-path diversity switching. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low insertion loss | 0.4 dB at 1 GHz enables minimal SNR degradation in sensitive receiver chains. |
| Reflective SPDT topology | RF1/RF2 present short circuits when OFF - eliminates need for external termination resistors. |
| CMOS/TTL-compatible control | 3 µA max control current at 0/+3 V eliminates driver ICs and reduces BOM count. |
| RoHS-compliant SOT26 | Matte Sn finish and 260 °C reflow rating support lead-free manufacturing without derating. |
| High linearity | +45 dBm IP3 at 1 GHz maintains signal integrity in concurrent multi-band operation. |
Applications
| ISM Band Front-End Switching | PCMCIA Wireless Card RF Routing |
|---|---|
Use Scenario: Selecting between 2.4 GHz antenna and 2.4 GHz filter path in Wi-Fi modules. IC Role / Device Role / Timing Role: Reflective SPDT switch controlling RF signal direction with <1 dB loss at 2.4 GHz. Use Value: Enables compact dual-path layout without external terminations or bias networks. | Use Scenario: Dynamic antenna selection in mini-PCI wireless adapters supporting Bluetooth + Wi-Fi coexistence. IC Role / Device Role / Timing Role: Low-latency RF path selector with 10 ns switching time and 3 µA control draw. Use Value: Reduces power consumption and board area versus discrete MOSFET-based solutions. |
| Cellular Transceiver Diversity Switching | 900 MHz Receiver Protection |
Use Scenario: Antenna diversity switching in GSM/UMTS handsets operating at 900 MHz and 1.8–2.2 GHz bands. IC Role / Device Role / Timing Role: High-isolation SPDT switch isolating receive paths during transmit bursts. Use Value: Delivers >24 dB isolation at 900 MHz to prevent LNA desensitization from PA leakage. | Use Scenario: Protecting low-noise amplifier input from out-of-band interferers in 900 MHz ISM receivers. IC Role / Device Role / Timing Role: Reflective switch placed before LNA to shunt interferers to ground when OFF. Use Value: Leverages inherent short-circuit OFF-state to avoid external protection diodes or filters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT RF switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC197AE | Different SOT26 pinout (non-interchangeable); identical RF specs and control interface. | Requires PCB redesign due to swapped RF1/RF2 and control pin locations. | Select only if legacy board uses HMC197AE footprint and performance match is confirmed. |
| Qorvo QM11035 | Higher insertion loss (0.6 dB @ 2.4 GHz); 0/+2.8 V control; same SOT26 package. | Lower linearity (+39 dBm IP3) limits use in high-dynamic-range LTE receivers. | Prefer for cost-sensitive consumer designs where 0.2 dB loss penalty is acceptable. |
Compared with HMC197AE and QM11035, the HMC221AE offers the lowest insertion loss (0.4 dB) and highest IP3 (+45 dBm) in SOT26, making it optimal for high-performance ISM and cellular front-ends where signal fidelity is critical.
Availability
HMC221AE is available at Aetrix Electronics and suitable for ISM band front-end switching, PCMCIA wireless card RF routing, and cellular transceiver diversity applications requiring stable component supply, RoHS compliance, and SMT manufacturability.
Supply support for HMC221AE 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
Hittite Microwave Corporation was a U.S.-based designer of high-frequency analog and mixed-signal ICs, acquired by Analog Devices in 2014; known for GaAs MMICs targeting RF infrastructure and wireless systems.
The HMC221AE belongs to Hittite's SPDT GaAs MMIC switch product line, engineered specifically for compact, high-linearity RF path selection in portable and battery-powered ISM and cellular devices.
FAQ
What is the maximum RF input power the HMC221AE can handle without compression?
The HMC221AE delivers 1 dB compression at +30 dBm (typ) at 1 GHz with +5 V control voltage. At 900 MHz, P1dB reaches +30 dBm; at 1900 MHz, it is +29 dBm. Operation above +31 dBm at +5 V risks permanent damage per absolute maximum ratings. Always apply DC blocking capacitors at RFC, RF1, and RF2 ports.
Does the HMC221AE require external biasing or level-shifting for CMOS control inputs?
No, the HMC221AE does not require external biasing or level-shifting. Its control inputs accept 0/+3 V logic directly with only 3 µA drive current, ensuring full compatibility with HC, HCT, and most CMOS logic families operating at 3–5 V supply. No pull-up resistors or current-limiting networks are needed.
What is the OFF-state behavior of RF1 and RF2 in the HMC221AE?
In the OFF state, both RF1 and RF2 present reflective short circuits to ground - not high-impedance open circuits. This eliminates the need for external 50 Ω terminations and simplifies PCB layout. The short-circuit nature is intrinsic to the GaAs MMIC design and verified across DC–3 GHz.
Can the HMC221AE be used at frequencies below 100 MHz or down to DC?
Yes, the HMC221AE is specified for DC–3 GHz operation. Insertion loss remains ≤0.8 dB and isolation ≥14 dB even at DC, confirmed by measurement data. Its GaAs MMIC construction supports true DC coupling, making it suitable for baseband switching and low-frequency test instrumentation.
What thermal considerations apply when mounting the HMC221AE on a PCB?
All ground pins (Pins 1 and 4) and the exposed paddle must be soldered to a solid PCB ground plane to achieve the rated 178 °C/W thermal resistance. Inadequate grounding increases junction temperature, reducing reliability and compressing P1dB. Thermal vias under the paddle are strongly recommended for continuous operation near 0.36 W dissipation.
HMC221AE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- General Purpose
- Topology:
- Reflective
- Circuit:
- SPDT
- Frequency Range:
- 0Hz ~ 3GHz
- Isolation:
- 18dB
- Insertion Loss:
- 0.8dB
- Test Frequency:
- 3GHz
- P1dB:
- 29dBm
- IIP3:
- 43dBm
- Features:
- -
- Impedance:
- 50Ohm
- Voltage - Supply:
- 3V ~ 8V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
HMC221AE FAQ
1.How can I place an order for HMC221AE through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC221AE 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 HMC221AE reliable?
The price and inventory of HMC221AE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC221AE is usually 5 days.
3.What payment methods are accepted for HMC221AE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC221AE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC221AE?
HMC221AE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC221AE 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 HMC221AE?
For technical support, including HMC221AE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC221AE requirements.
6.How does Aetrix verify that HMC221AE is sourced from the original manufacturer or authorized distributors?
All HMC221AE 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 HMC221AE meets industry standards.
7.What is the process for return or replacement of HMC221AE?
All HMC221AE units undergo pre-shipment inspection (PSI). If there is an issue with HMC221AE, 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 HMC221AE part is unused and in its original packaging.
Return procedure for HMC221AE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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