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Analog Devices Inc. 105675-HMC433
- Part No.:
- 105675-HMC433
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
105675-HMC433.pdf
- Description:
- BOARD EVAL DIVIDER HMC433
- Quantity:
- Payment:
- Shipping:
Inventory:4,707
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Product details
Overview
The 105675-HMC433 from Analog Devices (formerly Hittite Microwave) is a GaAs HBT MMIC static frequency divider with divide-by-4 functionality, operating from DC (square-wave input) to 8 GHz input frequency on a single +3 V supply. It delivers -2 to -3.5 dBm output power, exhibits ultra-low SSB phase noise of -150 dBc/Hz at 100 kHz offset, and is housed in an SOT26 surface-mount package for RF prescaler use in C-band PLL systems.
For engineers reviewing the 105675-HMC433 datasheet, 105675-HMC433 pinout, 105675-HMC433 application, or 105675-HMC433 equivalent, this page provides verified functional identity, validated SOT26 pin mapping, confirmed DC–8 GHz operation with square-wave DC capability, real-world output power and phase noise specs, and two technically documented alternative dividers for prescaler design.
Technical Context
The 105675-HMC433 implements a static CMOS-compatible logic divider architecture using InGaP GaAs HBT technology, enabling deterministic divide-by-4 operation without external feedback or tuning. Its DC-coupled square-wave input support and single-ended I/O simplify integration into high-frequency PLL front-ends.
It operates across -40 °C to +85 °C with 53 mA supply current at +3 V, and requires DC blocking capacitors at both IN and OUT ports. The device maintains stable output transition time (120 ps at 882 MHz) and harmonic suppression over its full 4–8 GHz input range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Division Ratio | Fixed divide-by-4 - produces exact ¼ input frequency with no programmability or reconfiguration required. |
| Input Frequency Range | DC to 8 GHz (square wave) / 0.2–8.5 GHz (sine wave) - supports baseband clock injection and wideband RF prescaling. |
| Output Power | -2.0 to -3.5 dBm at 4–8 GHz - sufficient to drive subsequent ECL or PECL logic stages without amplification. |
| SSB Phase Noise | -150 dBc/Hz at 100 kHz offset (Pin = 0 dBm, Fin = 4 GHz) - preserves system-level spectral purity in low-noise synthesizers. |
| Supply Voltage & Current | +3.0 V ±0.3 V @ 53 mA typical - compatible with standard LDOs and enables low-power RF subsystem design. |
| Operating Temperature | -40 °C to +85 °C - qualified for industrial and outdoor wireless infrastructure environments. |
Pinout & Package
The 105675-HMC433 is packaged in a 6-lead SOT26 plastic surface-mount package with exposed paddle for thermal management. All ground leads and the paddle must be soldered to PCB RF ground per Hittite land pattern guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4 | No Connect (N/C) | Internally unconnected; externally grounded per evaluation board practice to reduce parasitic coupling. |
| 2 | Ground (GND) | RF/DC return path - must connect directly to solid ground plane with multiple vias. |
| 3 | RF Input (IN) | DC-blocked port accepting square or sine wave inputs up to 8 GHz; requires external AC coupling capacitor. |
| 5 | Supply (Vcc) | +3 V ±0.3 V supply input - bypassed with 1000 pF (C3) and 10 μF (C4) per application circuit. |
| 6 | RF Output (OUT) | DC-blocked divided output - delivers FIN/4 signal at -2 to -3.5 dBm; requires external AC coupling capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low additive phase noise | -150 dBc/Hz at 100 kHz offset enables high-performance local oscillator synthesis in VSAT and 5G backhaul radios. |
| Single-ended I/O architecture | Eliminates need for baluns or differential routing, reducing BOM count and layout complexity in compact RF modules. |
| DC-coupled square-wave input support | Allows direct interface with digital clock sources (e.g., FPGA outputs), extending usability beyond RF-only signal chains. |
| 9 mm² SOT26 footprint | Enables dense placement in multi-channel transceivers and small-form-factor microwave assemblies. |
Applications
| UNII & HiperLAN WLAN Radios | VSAT & Point-to-Point Microwave Links |
|---|---|
Use Scenario: Prescaling 5–6 GHz IF signals in 802.11a/h and HiperLAN2 transceivers for PLL-based frequency synthesis. IC Role / Device Role / Timing Role: Divide-by-4 static divider providing clean, low-phase-noise reference to PLL phase detector. Use Value: Maintains EVM integrity by contributing only -150 dBc/Hz additive noise at 100 kHz offset, critical for 64-QAM modulation fidelity. | Use Scenario: Down-converting 7–8 GHz carrier signals in outdoor C-band VSAT terminals and licensed point-to-point links. IC Role / Device Role / Timing Role: First-stage RF prescaler in dual-loop PLL architecture, enabling stable VCO control below 2 GHz. Use Value: Delivers -2.5 dBm typical output at 8 GHz input, ensuring robust drive level for subsequent mixer or buffer stages. |
| Fiber Optic Transmitter Clocking | 3G/4G Cellular Infrastructure |
Use Scenario: Generating precise 1.25 GHz or 2.5 GHz clock references from higher-frequency oscillators in SFP+ and XFP optical modules. IC Role / Device Role / Timing Role: Fixed-ratio clock divider supplying jitter-attenuated timing to laser driver ICs and serializer logic. Use Value: 120 ps output transition time ensures fast edge rates compatible with 3.125 Gbps serial data paths. | Use Scenario: Supporting frequency planning in macrocell and small-cell base station transceivers requiring stable LO generation across 1.7–2.7 GHz bands. IC Role / Device Role / Timing Role: Prescaler in fractional-N synthesizer loop, dividing VCO output prior to phase detection. Use Value: Operates reliably from -40 °C to +85 °C with 53 mA supply current, meeting industrial thermal and power constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar static frequency divider applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC363 | Divide-by-2, 0.1–13 GHz input, -148 dBc/Hz phase noise, same SOT26 package | Higher max input frequency but half division ratio - requires redesign of PLL loop dynamics | Select when 13 GHz coverage or lower division ratio is needed; verify loop filter recalibration. |
| HMC492 | Divide-by-4, 0.1–12 GHz input, -147 dBc/Hz phase noise, 6-lead SOT26 package | Broadband extension to 12 GHz with slightly higher phase noise floor | Prefer for Ka-band extensions; confirm thermal derating above 85 °C due to higher Icc. |
Compared with HMC363 and HMC492, the 105675-HMC433 offers optimal balance of phase noise (-150 dBc/Hz), DC-square-wave compatibility, and proven stability in C-band infrastructure - making it the preferred choice where 8 GHz bandwidth and minimal additive jitter are primary requirements.
Availability
The 105675-HMC433 is available at Aetrix Electronics and suitable for UNII/WLAN radios, VSAT terminals, fiber optic transmitters, and cellular infrastructure equipment requiring stable component supply and guaranteed long-term sourcing.
Supply support for 105675-HMC433 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 continues to manufacture, support, and qualify its high-frequency RF MMIC portfolio including prescalers, dividers, and detectors.
The HMC433 belongs to Hittite's SMT GaAs HBT MMIC frequency divider family, engineered specifically for low-phase-noise, high-speed prescaling in wireless infrastructure, test equipment, and broadband communications systems.
FAQ
What is the minimum input frequency supported by the 105675-HMC433?
The 105675-HMC433 supports DC input for square-wave signals, meaning it can accept zero-Hz fundamental frequencies as long as the waveform is square. For sine-wave inputs, the minimum specified frequency is 0.2 GHz. This DC-square capability allows direct interfacing with digital clock sources such as FPGA outputs without AC coupling, a key advantage in mixed-signal timing architectures. The 105675-HMC433 datasheet confirms operation down to DC under square-wave conditions.
Does the 105675-HMC433 require external DC blocking capacitors?
Yes, the 105675-HMC433 requires external DC blocking capacitors at both the RF input (Pin 3) and RF output (Pin 6) ports. The device is not internally DC-coupled for RF signal paths; its IN and OUT pins are AC-coupled by design. Capacitor values must be selected based on the lowest operating frequency - for example, 100 pF for 1 GHz+ operation. This requirement is explicitly stated in the application circuit and absolute maximum ratings section of the 105675-HMC433 documentation.
What is the thermal resistance and maximum junction temperature of the 105675-HMC433?
The 105675-HMC433 has a thermal resistance of 83 °C/W (junction to ground paddle) and a maximum junction temperature of 135 °C to maintain 1 million hour MTTF reliability. At nominal +3 V supply and +85 °C ambient, the junction temperature reaches approximately 99 °C. Proper PCB layout - including soldering all ground leads and the exposed paddle to a solid RF ground plane with multiple thermal vias - is essential to achieve this rating. These values are specified in the 105675-HMC433 absolute maximum ratings table.
Is the 105675-HMC433 pin-compatible with the HMC433E variant?
Yes, the 105675-HMC433 and HMC433E share identical pinout, package outline (SOT26), and electrical interface - differing only in RoHS compliance (HMC433E uses 100% matte Sn lead finish) and MSL rating (both MSL1, but peak reflow temp differs: 235 °C vs. 260 °C). No PCB layout changes are required when substituting between them. This compatibility is confirmed in the "Package Information" section of the 105675-HMC433 datasheet, which lists both variants under the same outline drawing and pin description.
What evaluation board is associated with the 105675-HMC433?
The official evaluation board for the 105675-HMC433 is part number 105199, referenced in the "Evaluation PCB" section of the datasheet. It features SMA RF connectors (J1–J2), DC pins (J3–J4), and recommended decoupling (100 pF, 1000 pF, and 10 μF capacitors). The board uses Rogers 4350 substrate and is optimized for 50 Ω impedance matching. Hittite offered this board upon request, and Analog Devices maintains legacy support for it as part of the 105675-HMC433 product ecosystem.
105675-HMC433 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Bag
- Product Status:
- Active
- Type:
- Prescaler
- Frequency:
- 0Hz ~ 8GHz
- Contents:
- Board(s)
- Utilized IC / Part:
- HMC433
105675-HMC433 FAQ
1.How can I place an order for 105675-HMC433 through Aetrix?
Please submit a Request for Quotation (RFQ) for 105675-HMC433 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 105675-HMC433 reliable?
The price and inventory of 105675-HMC433 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 105675-HMC433 is usually 5 days.
3.What payment methods are accepted for 105675-HMC433?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 105675-HMC433 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 105675-HMC433?
105675-HMC433 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 105675-HMC433 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 105675-HMC433?
For technical support, including 105675-HMC433 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 105675-HMC433 requirements.
6.How does Aetrix verify that 105675-HMC433 is sourced from the original manufacturer or authorized distributors?
All 105675-HMC433 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 105675-HMC433 meets industry standards.
7.What is the process for return or replacement of 105675-HMC433?
All 105675-HMC433 units undergo pre-shipment inspection (PSI). If there is an issue with 105675-HMC433, 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 105675-HMC433 part is unused and in its original packaging.
Return procedure for 105675-HMC433:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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