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Analog Devices Inc. 118099-HMC646LP2
- Part No.:
- 118099-HMC646LP2
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
118099-HMC646LP2.pdf
- Description:
- BOARD EVAL HMC646LP2E 1600MHZ
- Quantity:
- Payment:
- Shipping:
Inventory:1,045
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Product details
Overview
HMC646LP2 from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC SPDT failsafe RF switch in a 2×2 mm DFN package, designed for T/R switching and LNA protection in high-power wireless infrastructure. It operates from 100–2100 MHz, delivers +46 dBm P0.1dB on Tx, exhibits 0.4 dB typical insertion loss, and maintains failsafe Tx-on behavior when unpowered-ideal for TD-SCDMA/3G repeaters and automotive telematics.
For engineers reviewing the HMC646LP2 datasheet, HMC646LP2 pinout, HMC646LP2 application, or HMC646LP2 equivalent, key selection criteria include its 40 W peak power handling (≤10% duty cycle), +74 dBm Tx IIP3, single positive 0/+5 V control interface, and thermal resistance of 14.75 °C/W at the Tx port.
Technical Context
The HMC646LP2 implements a monolithic GaAs pHEMT architecture with integrated DC blocking on all RF ports (RFC, Tx, Rx) and an external ACG capacitor for bias stabilization. Its failsafe topology ensures RFC-to-Tx continuity under zero-control-voltage conditions, eliminating reliance on active bias during power loss.
Switching is controlled via a single TTL/CMOS-compatible Vctl input referenced to Vdd (3–8 V), with tON/tOFF of 320 ns and tRISE/tFALL of 100 ns. The device requires PCB-level RF grounding of the exposed paddle and all ground leads per Hittite's land pattern guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 100–2100 MHz - supports multi-band operation across 869–960 MHz, 1525–1661 MHz, and 2010–2025 MHz bands |
| Insertion Loss (Tx–RFC) | 0.4 dB typ - enables minimal signal attenuation in transmit path for high-efficiency PA output coupling |
| IIP3 (Tx) | +74 dBm typ - preserves linearity in high-dynamic-range transceivers with two-tone +17 dBm inputs |
| P0.1dB (Tx) | +46 dBm typ - handles up to 40 W peak RF power (≤10% duty cycle) without compression |
| Isolation (RFC–Rx) | 28 dB typ - prevents receiver desensitization during simultaneous Tx/Rx band operation |
| Thermal Resistance (Tx) | 14.75 °C/W - enables stable operation at +85°C ambient with proper PCB thermal vias |
| Control Voltage | 0/+5 Vdc - compatible with standard logic drivers; tolerates ±0.2 Vdc variation |
Pinout & Package
Package: 2×2 mm, 6-pin leadless DFN with exposed metal paddle (MSL1, Sn/Pb finish). Requires soldering of all ground leads and paddle to PCB RF ground per Hittite Application Note land pattern.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Tx) | Transmit RF port | DC-coupled 50 Ω matched port; rated for +44 dBm CW and +46 dBm P0.1dB |
| 2 (N/C) | No-connect terminal | Internally unused; must remain floating-no PCB trace or pad required |
| 3 (ACG) | Active bias control ground | External capacitor to ground stabilizes gate bias; critical for failsafe reliability |
| 4 (Rx) | Receive RF port | DC-coupled 50 Ω matched port; rated for +36.75 dBm CW and +20 dBm P0.1dB |
| 5 (Vctl) | Control voltage input | Single-pin TTL/CMOS interface; defines RFC→Tx (Vctl = 0 V) or RFC→Rx (Vctl = Vdd) |
| 6 (RFC) | Common RF port | DC-coupled 50 Ω antenna/common port; connects to Tx or Rx based on Vctl state |
| GND (paddle) | RF and thermal ground | Exposed bottom paddle must be soldered to solid PCB ground plane for EMI suppression and thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Failsafe Tx-on default | Ensures RFC-to-Tx continuity during power loss or control failure-critical for LNA protection in base stations |
| High-power GaAs MMIC | Supports 40 W peak RF power (≤10% duty cycle) with +46 dBm P0.1dB and +74 dBm IIP3 on Tx path |
| Single positive control | Eliminates need for dual-rail supplies; operates with 0/+5 Vdc over 3–8 V Vdd range |
| DC-coupled RF ports | Enables integration into DC-coupled transceiver architectures without external bias tees |
| Low thermal resistance | 14.75 °C/W at Tx port allows sustained operation at +85°C ambient with standard 4-layer PCB thermal design |
Applications
| LNA Protection in 3G Base Stations | T/R Switching in Automotive Telematics |
|---|---|
Use Scenario: Protects low-noise amplifier input from high-power transmit leakage in TD-SCDMA/3G repeater systems operating at 2010–2025 MHz. IC Role / Device Role / Timing Role: SPDT failsafe switch routing antenna signal between PA output and LNA input, with automatic Tx-path engagement on power loss. Use Value: Prevents LNA damage during PA burst transmission and ensures receive path remains isolated when Tx is active-verified at +46 dBm P0.1dB and 28 dB RFC–Rx isolation. | Use Scenario: Enables full-duplex antenna sharing in vehicle-mounted LTE/V2X modules operating across 869–960 MHz and 1525–1661 MHz bands. IC Role / Device Role / Timing Role: High-isolation RF switch toggling antenna between cellular transceiver and GPS/GNSS receiver with sub-320 ns switching time. Use Value: Maintains >27 dB isolation between Tx and Rx paths while supporting 40 W peak PA output-enabling compact dual-band telematics designs without external circulators. |
| Satellite Subscriber Terminal Front-End | Private Mobile Radio (PMR) Handset TR Module |
Use Scenario: Routes L-band signals (1525–1661 MHz) between satellite modem and patch antenna in maritime VSAT terminals. IC Role / Device Role / Timing Role: Failsafe SPDT switch ensuring continuous Tx path to antenna during brownout events in remote deployments. Use Value: Delivers 0.4 dB Tx insertion loss and +74 dBm IIP3 to preserve EVM in QPSK/8PSK modulated waveforms-validated across temperature (-40 to +85°C). | Use Scenario: Integrates into ruggedized PMR handsets requiring robust T/R switching for 380–470 MHz and 806–870 MHz bands with battery-powered operation. IC Role / Device Role / Timing Role: Low-loss, high-linearity SPDT switch enabling shared antenna architecture with single 0/+5 V control line. Use Value: Achieves 0.6 dB max Tx insertion loss and 20 dB min Tx–RFC isolation at 450 MHz-supporting 25 W peak PA output within handheld thermal constraints. |
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 | Si-based; 0.7 dB higher Tx insertion loss (1.1 dB typ); +67 dBm Tx IIP3; 2.5× larger 3×3 mm QFN | Lower power handling (+37 dBm P0.1dB); suited for portable PMR vs. infrastructure-grade 40 W operation | Select for cost-sensitive, lower-power handhelds where GaAs performance margin is not required |
| Analog Devices ADMV1013 | SiGe; integrated LO buffer and VGA; 10–20 GHz range; no failsafe mode; requires dual-polarity control | Designed for microwave point-to-point radios-not drop-in for sub-2.1 GHz failsafe T/R switching | Consider only for new 10+ GHz system designs requiring integrated upconversion-not a functional replacement |
Compared with QM11036 and ADMV1013, the HMC646LP2 uniquely combines failsafe Tx-on behavior, 40 W peak power capability, and sub-0.5 dB Tx insertion loss below 2.1 GHz-making it irreplaceable for infrastructure LNA protection where reliability under power loss is mandatory.
Availability
HMC646LP2 is available at Aetrix Electronics and suitable for TD-SCDMA/3G repeaters, satellite subscriber terminals, and automotive telematics systems requiring stable component supply with guaranteed long-term availability.
Supply support for HMC646LP2 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 is a global semiconductor leader specializing in high-performance analog, mixed-signal, and RF technologies for precision signal processing and connectivity.
The HMC646LP2 belongs to Analog Devices' legacy Hittite Microwave RF switch product line, engineered for high-power, failsafe T/R front-end modules in wireless infrastructure and mission-critical mobile radio systems.
FAQ
What is the absolute maximum CW input power rating for the Tx port of the HMC646LP2?
The HMC646LP2 has an absolute maximum CW input power rating of +44.00 dBm at the Tx port. This corresponds to approximately 25 W continuous RF power. Operation beyond this level risks permanent damage due to channel temperature exceeding 150 °C, even with proper PCB thermal design. The +46 dBm P0.1dB specification applies only under pulsed conditions (≤10% duty cycle), not CW.
Does the HMC646LP2 require external DC blocking capacitors, and if so, where?
Yes, the HMC646LP2 requires external DC blocking capacitors at all three RF ports: RFC, Tx, and Rx. These are mandatory because all RF ports are DC-coupled internally. The evaluation PCBs (e.g., 118099 for 1600 MHz) specify values such as 330 pF at Tx and RFC, and 100 pF at Rx. Omitting these capacitors risks DC path conflicts with connected components like LNAs or PAs.
How does the failsafe operation of the HMC646LP2 behave when Vctl is unconnected or at 0 V?
When Vctl is at 0 V or left unconnected (floating), the HMC646LP2 defaults to RFC-to-Tx conduction-its failsafe "Tx-on" state. This behavior is intrinsic to the GaAs pHEMT topology and does not require external pull-down resistors. It ensures antenna remains connected to the PA output during control power loss, protecting downstream components like LNAs from high-power exposure.
What is the recommended PCB grounding practice for the HMC646LP2's exposed paddle?
The exposed metal paddle on the HMC646LP2 must be soldered directly to a solid, low-impedance PCB RF ground plane using multiple thermal vias (≥6, 0.3 mm diameter). Per Hittite Application Note guidance, all ground leads (pins 2 and paddle) must connect to the same ground net. Inadequate paddle grounding degrades isolation (>10 dB loss), increases insertion loss, and raises junction temperature beyond the rated 14.75 °C/W.
Can the HMC646LP2 operate with Vdd voltages other than 5 V, and what is the valid control voltage range?
Yes, the HMC646LP2 supports Vdd from +3 V to +8 V, with typical characterization at +5 V. The control voltage Vctl must be referenced to Vdd and ranges from 0 V to Vdd, with ±0.2 Vdc tolerance. For example, with Vdd = +8 V, Vctl = 0 V selects RFC→Tx, while Vctl = +8 V selects RFC→Rx. Supply voltage beyond +10 Vdc violates absolute maximum ratings and may cause irreversible damage.
118099-HMC646LP2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Type:
- Switch, SPDT
- Frequency:
- 1.6GHz
- Contents:
- Board(s)
- Utilized IC / Part:
- HMC646LP2
118099-HMC646LP2 FAQ
1.How can I place an order for 118099-HMC646LP2 through Aetrix?
Please submit a Request for Quotation (RFQ) for 118099-HMC646LP2 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 118099-HMC646LP2 reliable?
The price and inventory of 118099-HMC646LP2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 118099-HMC646LP2 is usually 5 days.
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118099-HMC646LP2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 118099-HMC646LP2 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 118099-HMC646LP2?
For technical support, including 118099-HMC646LP2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 118099-HMC646LP2 requirements.
6.How does Aetrix verify that 118099-HMC646LP2 is sourced from the original manufacturer or authorized distributors?
All 118099-HMC646LP2 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 118099-HMC646LP2 meets industry standards.
7.What is the process for return or replacement of 118099-HMC646LP2?
All 118099-HMC646LP2 units undergo pre-shipment inspection (PSI). If there is an issue with 118099-HMC646LP2, 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 118099-HMC646LP2 part is unused and in its original packaging.
Return procedure for 118099-HMC646LP2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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