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Analog Devices Inc. 119394-HMC636ST89
- Part No.:
- 119394-HMC636ST89
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
119394-HMC636ST89.pdf
- Description:
- BOARD EVAL AMP GAIN BLOCK HMC636
- Quantity:
- Payment:
- Shipping:
Inventory:1,090
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Product details
Overview
HMC636ST89 from Analog Devices (formerly Hittite Microwave) is a GaAs pHEMT high-linearity gain block amplifier operating from 0.2 to 4.0 GHz, delivering 13 dB small-signal gain, +22 dBm P1dB output power, and +40 dBm OIP3 - ideal for RF front-end stages in wireless infrastructure transceivers.
For engineers reviewing the HMC636ST89 datasheet, HMC636ST89 pinout, HMC636ST89 application, or HMC636ST89 equivalent, this page provides verified specifications, SOT89 package layout, temperature-stable performance data, and real-world use cases in cellular, WiMAX, CATV, and microwave radio systems.
Technical Context
The HMC636ST89 integrates an internally matched GaAs pHEMT transistor with 50 Ω input/output impedance, eliminating external matching components across its full 0.2–4.0 GHz bandwidth. It operates from a single +5 V supply with 155 mA quiescent current and supports cascadable 50 Ω system integration.
Its architecture delivers stable gain variation of ≤0.02 dB/°C, input return loss ≥10 dB, output return loss ≥13 dB, and reverse isolation ≥20 dB - enabling robust cascaded amplifier designs without interstage filtering or tuning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 0.2–4.0 GHz - covers PCS, UMTS, LTE, WiMAX, and fixed wireless bands in a single device. |
| Small-Signal Gain | 13 dB typical - enables single-stage amplification without gain peaking or instability compensation. |
| P1dB Output Power | +22 dBm typical - supports linear operation into 50 Ω loads up to 23 dBm saturated output. |
| OIP3 | +40 dBm typical - ensures low distortion in multi-tone environments like DOCSIS 3.1 cable modems. |
| Noise Figure | 2.2 dB typical - suitable as LNA or pre-driver where SNR preservation is critical. |
| Supply Voltage / Current | +5 V / 155 mA - compatible with standard RF system power rails; no negative bias or gate control needed. |
| Operating Temperature | −40 °C to +85 °C - validated for outdoor base station and industrial RF equipment deployment. |
Pinout & Package
Package: Industry-standard SOT-89 (3-lead variant with exposed thermal pad; pin 2 and 4 are GND, bottom thermal tab must be soldered to PCB ground plane).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RFIN | DC-coupled RF input requiring off-chip DC blocking capacitor; 50 Ω matched at all frequencies. |
| 2, 4 | GND | RF/DC ground terminals; both pins plus package bottom must connect directly to solid ground plane. |
| 3 | RFOUT | RF output and DC bias feed point; supplies +5 V to internal FET drain; requires external RF choke or bias tee. |
Key Features
| Feature | Design Value |
|---|---|
| Internally matched 50 Ω I/O | Eliminates external matching networks across 0.2–4.0 GHz - reduces BOM count and layout sensitivity. |
| High linearity (OIP3 = +40 dBm) | Enables clean signal amplification in wideband multi-carrier systems without adjacent channel interference. |
| Low noise figure (2.2 dB) | Preserves receiver sensitivity when used as first-stage LNA in base station or repeater front ends. |
| Single +5 V supply operation | Simplifies power delivery architecture - no dual-rail or negative bias circuitry required. |
| Thermally enhanced SOT-89 | Exposed thermal pad and low θJA (75.6 °C/W) support continuous +22 dBm operation at +85 °C ambient. |
Applications
| Cellular Base Station Transceiver | WiMAX Fixed Wireless CPE |
|---|---|
Use Scenario: Amplifying uplink/downlink signals between RF transceiver IC and antenna switch module in 2G/3G/LTE macrocell radios. IC Role / Device Role / Timing Role: Cascadable 50 Ω gain block providing +22 dBm P1dB and +40 dBm OIP3 in transmit chain. Use Value: Enables high-efficiency PA driver stage without external matching - reducing board area and insertion loss. |
Use Scenario: Boosting OFDM signal paths in 2.3–2.7 GHz WiMAX customer premises equipment with strict ACLR requirements. IC Role / Device Role / Timing Role: Linear gain block placed after DAC output and before upconverter in broadband wireless modem. Use Value: Delivers >13 dB gain with <2.5 dB NF and <0.02 dB/°C drift - maintaining EVM under thermal cycling. |
| CATV Optical Node Amplifier | Microwave Point-to-Point Radio |
Use Scenario: Amplifying downstream 54–1002 MHz DOCSIS 3.1 signals in fiber-deep node RF distribution modules. IC Role / Device Role / Timing Role: Wideband gain block in split-band amplifier path with flat 13 dB gain and +40 dBm IP3. Use Value: Supports 256-QAM modulation fidelity by minimizing composite triple beat (CTB) and cross-modulation distortion. |
Use Scenario: Intermediate gain stage in 3.5 GHz or 5.8 GHz licensed microwave backhaul radios operating outdoors. IC Role / Device Role / Timing Role: Temperature-stable RF amplifier with −40 °C to +85 °C rating and <0.02 dB/°C gain drift. Use Value: Maintains link budget integrity over environmental extremes without recalibration or gain control loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RF gain block applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Qorvo QPL9547 | 0.6–6.0 GHz range; +20.5 dBm P1dB; +37 dBm OIP3; 3.3 V operation; 2.0 mm × 2.0 mm DFN. | Better high-frequency coverage but lower output power and linearity than HMC636ST89. | Prefer for compact 5G FR1 front ends where size and 3.3 V compatibility outweigh linearity needs. |
| Mini-Circuits PSA-4-50+ | DC–4 GHz; +19 dBm P1dB; +34 dBm OIP3; +8 V supply; larger SOT-89-4 package with separate bias pin. | Lower gain (12 dB), higher supply voltage, and reduced linearity limit use in high-order modulation systems. | Select when ultra-low cost and broad DC coupling are prioritized over spectral purity in test equipment. |
Compared with QPL9547 and PSA-4-50+, the HMC636ST89 offers superior OIP3 (+40 dBm) and P1dB (+22 dBm) at +5 V, making it optimal for carrier-grade wireless infrastructure where distortion-limited dynamic range is critical.
Availability
HMC636ST89 is available at Aetrix Electronics and suitable for cellular base stations, WiMAX CPE, CATV optical nodes, and microwave radio links requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for HMC636ST89 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 maintains its high-performance RF product portfolio, including GaAs and GaN amplifiers, mixers, and switches for defense, communications, and instrumentation.
The HMC636ST89 belongs to Hittite's legacy high-linearity gain block family, engineered specifically for broadband RF infrastructure applications demanding flat gain, low noise, and high OIP3 without external tuning.
FAQ
What is the recommended DC blocking capacitor value for the RFIN pin of the HMC636ST89?
A 100 pF chip capacitor in 0402 package is specified in the evaluation board design for the HMC636ST89 RFIN pin. This value ensures effective DC blocking while maintaining broadband impedance match from 0.2 to 4.0 GHz. Larger values may degrade high-frequency return loss; smaller values risk insufficient low-frequency attenuation. The HMC636ST89 datasheet confirms this value in the Application Circuit section.
Does the HMC636ST89 require external bias circuitry beyond the +5 V supply?
No - the HMC636ST89 is internally biased and requires only a single +5 V supply applied to the RFOUT pin (Pin 3). No gate voltage adjustment, current-setting resistors, or negative bias sources are needed. The device draws 155 mA quiescent current and is fully operational with just the +5 V rail and proper RF grounding on Pins 2 and 4.
Can the HMC636ST89 be used as a low-noise amplifier in receiver front ends?
Yes - the HMC636ST89 achieves a typical noise figure of 2.2 dB across 0.2–4.0 GHz, making it suitable as an LNA in base station, repeater, and wireless test equipment receivers. Its 50 Ω input match eliminates external matching, and its −40 °C to +85 °C operating range ensures consistent NF performance in outdoor deployments.
What is the maximum RF input power the HMC636ST89 can tolerate without damage?
The absolute maximum RF input power for the HMC636ST89 is +16 dBm at +5 V supply, per the Absolute Maximum Ratings table. Exceeding this level risks permanent degradation of the GaAs pHEMT transistor. For reliable linear operation, input power should remain ≤−5 dBm to maintain P1dB compression margin and avoid intermodulation distortion.
Is the HMC636ST89 RoHS-compliant, and what is its MSL rating?
The HMC636ST89 is not RoHS-compliant (Sn/Pb lead finish); the RoHS-compliant version is HMC636ST89E (100% matte Sn, MSL1, 260 °C peak reflow). Both variants share identical electrical specs and SOT-89 mechanical outline. HMC636ST89 has MSL1 rating with 235 °C max peak reflow temperature and requires no floor life limitation.
119394-HMC636ST89 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Bag
- Product Status:
- Active
- Type:
- Amplifier
- Frequency:
- 200MHz ~ 4GHz
- Contents:
- Board(s)
- Utilized IC / Part:
- HMC636ST89
119394-HMC636ST89 FAQ
1.How can I place an order for 119394-HMC636ST89 through Aetrix?
Please submit a Request for Quotation (RFQ) for 119394-HMC636ST89 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 119394-HMC636ST89 reliable?
The price and inventory of 119394-HMC636ST89 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 119394-HMC636ST89 is usually 5 days.
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Once your 119394-HMC636ST89 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 119394-HMC636ST89?
For technical support, including 119394-HMC636ST89 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 119394-HMC636ST89 requirements.
6.How does Aetrix verify that 119394-HMC636ST89 is sourced from the original manufacturer or authorized distributors?
All 119394-HMC636ST89 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 119394-HMC636ST89 meets industry standards.
7.What is the process for return or replacement of 119394-HMC636ST89?
All 119394-HMC636ST89 units undergo pre-shipment inspection (PSI). If there is an issue with 119394-HMC636ST89, 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 119394-HMC636ST89 part is unused and in its original packaging.
Return procedure for 119394-HMC636ST89:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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