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Analog Devices Inc. 104991-HMC327MS8G
- Part No.:
- 104991-HMC327MS8G
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF, RFID, Wireless Evaluation Boards
- Package:
- Datasheet:
-
104991-HMC327MS8G.pdf
- Description:
- EVAL BOARD HMC327MS8G
- Quantity:
- Payment:
- Shipping:
Inventory:3,579
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Product details
Overview
HMC327MS8G from Analog Devices (formerly Hittite Microwave) is a GaAs InGaP HBT MMIC power amplifier optimized for 3–4 GHz RF systems, delivering +30 dBm saturated output power at 45% PAE, 21 dB gain, and +27 dBm P1dB from a single +5 V supply. It serves as a high-efficiency driver stage in wireless infrastructure transceivers.
For engineers reviewing the HMC327MS8G datasheet, HMC327MS8G pinout, HMC327MS8G application, or HMC327MS8G equivalent, key selection criteria include its 3–4 GHz bandwidth, thermal performance with exposed ground paddle, power-down control capability, and compatibility with 50 Ω RF interfaces in compact MSOP-8 packaging.
Technical Context
The HMC327MS8G integrates two cascaded amplification stages biased via separate Vcc (Pin 8) and RFOUT (Pins 5–6) supply paths, enabling independent optimization of gain and output power. Its InGaP HBT process ensures stable gain variation (0.035 dB/°C typ.) and low noise figure (5 dB) across –40 to +85 °C.
Power-down control is implemented through Vpd (Pin 1), which switches quiescent current from 250 mA (active) to 2 μA (off) with 40 ns switching speed. The device requires no external DC blocking on RFIN (Pin 3) due to internal AC coupling and 50 Ω input matching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | 3–4 GHz: Full gain and power performance across entire band without tuning. |
| Saturated Output Power (Psat) | +30 dBm: Delivers 1 W RF output into 50 Ω load at compression, suitable for medium-power transmitter stages. |
| Small-Signal Gain | 21 dB typ.: Enables single-stage amplification without intermediate buffering in 3.5 GHz WiMAX front-ends. |
| Power Added Efficiency (PAE) | 45% @ Psat: Reduces thermal load and supply current draw in battery- or thermally constrained modules. |
| Output IP3 | +38 dBm typ.: Supports linear operation with <–35 dBc ACLR in OFDM-based 802.16 systems. |
| Noise Figure | 5 dB: Maintains system NF budget when used as final PA in receive-diversity or TDD transceivers. |
| Supply Voltage | +5 V: Compatible with standard telecom and embedded RF supply rails; no negative or dual supplies required. |
Pinout & Package
Packaged in an 8-lead MSOP with exposed ground paddle (14.8 mm² footprint), the HMC327MS8G requires soldering all ground leads (Pins 2, 4, 7) and the paddle to PCB ground via multiple vias for optimal RF return path and thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Vpd) | Power-down control input | Accepts 0–5 V to switch Icq between 2 μA (off) and 250 mA (on); series 130 Ω resistor required for bias stability. |
| 2, 4, 7 (GND) | RF and DC ground terminals | Low-inductance return paths; must connect to solid ground plane with ≥4 thermal vias under paddle. |
| 3 (RFIN) | AC-coupled 50 Ω RF input | Internally matched; no external DC blocking needed; place input trace within 5 mm of package edge. |
| 5, 6 (RFOUT) | RF output & output-stage bias | Delivers amplified signal while sourcing bias current; requires local 330 pF bypass capacitor per pin. |
| 8 (Vcc) | Input-stage supply | +5 V supply for first amplification stage; bypassed with 330 pF capacitor placed <2 mm from pin. |
Key Features
| Feature | Design Value |
|---|---|
| High efficiency at saturation | 45% PAE enables 1 W output with only 670 mW DC input, reducing heatsink requirements in sealed enclosures. |
| Integrated thermal management | Exposed copper paddle with 34 °C/W junction-to-ground thermal resistance supports continuous 1.88 W dissipation at 85 °C ambient. |
| Fast power-down switching | 40 ns tON/tOFF allows dynamic TDD frame-level enable/disable in WiMAX base stations without RF leakage. |
| Minimal external components | Only 330 pF capacitors on Vcc and RFOUT pins plus 130 Ω resistor on Vpd needed-no matching networks or chokes required. |
| Stable over temperature | Gain variation ≤0.035 dB/°C ensures consistent link margin across –40 to +85 °C industrial operating range. |
Applications
| Wireless Local Loop (WLL) Base Stations | WiMAX Subscriber Units |
|---|---|
Use Scenario: Outdoor fixed wireless access node transmitting 3.5 GHz OFDM signals over 5 km line-of-sight links. IC Role / Device Role / Timing Role: Final RF power amplifier driving directional antenna with 21 dB gain and +30 dBm output. Use Value: 45% PAE reduces average power consumption by 30% vs. comparable Si LDMOS, extending outdoor cabinet thermal life. | Use Scenario: Indoor CPE unit receiving and retransmitting IEEE 802.16e signals in dense urban deployments. IC Role / Device Role / Timing Role: Transmit chain driver amplifier with fast power-down for TDD slot synchronization. Use Value: 40 ns switching enables precise 5 ms frame boundary alignment without guard-band overhead. |
| Fixed Wireless Access Points | Point-to-Multipoint Backhaul Terminals |
Use Scenario: Rooftop sectorized AP serving 32 simultaneous users in 3.3–3.8 GHz licensed band. IC Role / Device Role / Timing Role: Linear PA stage maintaining EVM <3% at +27 dBm P1dB for multi-user MIMO precoding. Use Value: +38 dBm IP3 prevents adjacent-channel interference in spectrally crowded deployments. | Use Scenario: Compact 5 km backhaul radio operating in unlicensed 3.65 GHz band with adaptive modulation. IC Role / Device Role / Timing Role: High-reliability RF output stage with thermal derating support up to 85 °C ambient. Use Value: Exposed paddle and 34 °C/W thermal resistance allow full Psat operation without forced air cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RF power amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC451LP3 | Higher frequency (4.5–8 GHz), lower Psat (+28 dBm), same +5 V supply and MSOP-8 package. | Targets 5 GHz UNII bands instead of 3.5 GHz WLL; lacks power-down control. | Select when operating above 4 GHz or when thermal headroom >200 mW is available. |
| QPL9057 | SiGe process, wider bandwidth (2.3–3.8 GHz), +29 dBm Psat, integrated active bias, no Vpd pin. | Designed for LTE small cells; requires different bias sequencing and has higher NF (6.5 dB). | Prefer for cost-sensitive LTE repeaters where 3.5 GHz coverage overlap exists but power-down is not required. |
Compared with HMC451LP3 and QPL9057, the HMC327MS8G uniquely combines 3–4 GHz optimization, 45% PAE, and hardware-controlled power-down in a thermally enhanced MSOP-8 - making it the only choice for energy-aware, thermally constrained 3.5 GHz fixed wireless transmitters.
Availability
HMC327MS8G is available at Aetrix Electronics and suitable for wireless local loop infrastructure, WiMAX subscriber units, and fixed-access point designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for HMC327MS8G 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-frequency RF product portfolio, including GaAs and GaN MMICs for defense, communications, and test equipment.
The HMC327MS8G belongs to Hittite's legacy linear/power amplifier family, engineered specifically for 3–4 GHz fixed wireless infrastructure where efficiency, thermal robustness, and fast power gating are critical.
FAQ
What is the recommended PCB layout practice for thermal management of the HMC327MS8G?
For optimal thermal performance, the exposed ground paddle of the HMC327MS8G must be soldered to a solid copper ground plane using ≥6 thermal vias (0.3 mm diameter, spaced ≤1 mm apart) connecting to inner/outer ground layers. The HMC327MS8G datasheet specifies 34 °C/W junction-to-ground thermal resistance - achievable only when the paddle is fully soldered and thermally coupled. Avoid solder mask over the paddle area.
Does the HMC327MS8G require external DC blocking capacitors on its RF ports?
No, the HMC327MS8G does not require external DC blocking on RFIN (Pin 3) because it is internally AC-coupled and 50 Ω matched. However, RFOUT (Pins 5–6) carries DC bias and must be isolated from downstream components using external DC blocking capacitors if those components cannot tolerate +5 V DC. The HMC327MS8G itself operates with no external blocking on input.
What is the absolute maximum RF input power rating for the HMC327MS8G?
The HMC327MS8G has an absolute maximum RF input power rating of +16 dBm when Vs = Vctl = +5 V, as specified in the Absolute Maximum Ratings table. Exceeding this level risks permanent damage to the input HBT stage. For reliable operation, keep input drive ≤+10 dBm to maintain linearity and avoid compression-induced distortion in the HMC327MS8G.
Can the HMC327MS8G operate from a supply voltage other than +5 V?
The HMC327MS8G is characterized and guaranteed for operation at +5 V (±5%), with absolute maximum Vcc = +5.5 V. While gain and Psat decrease gradually below +4.75 V (per Gain & Power vs. Supply Voltage plot), operation outside the +4.75–+5.25 V range voids specifications. The HMC327MS8G is not designed for variable-supply or envelope-tracking applications.
Is the HMC327MS8G pin-compatible with the HMC327MS8GE variant?
Yes, the HMC327MS8G and HMC327MS8GE share identical pinout, electrical specifications, and mechanical outline. The only difference is RoHS compliance: HMC327MS8GE uses 100% matte tin lead finish and has MSL1 rating with 260 °C peak reflow, whereas HMC327MS8G uses Sn/Pb finish and 235 °C reflow. Both variants use the same HMC327MS8G footprint and schematic symbols.
104991-HMC327MS8G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Type:
- Amplifier
- Frequency:
- 3GHz ~ 4GHz
- Contents:
- Board(s)
- Utilized IC / Part:
- HMC327MS8G
104991-HMC327MS8G FAQ
1.How can I place an order for 104991-HMC327MS8G through Aetrix?
Please submit a Request for Quotation (RFQ) for 104991-HMC327MS8G 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 104991-HMC327MS8G reliable?
The price and inventory of 104991-HMC327MS8G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 104991-HMC327MS8G is usually 5 days.
3.What payment methods are accepted for 104991-HMC327MS8G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 104991-HMC327MS8G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 104991-HMC327MS8G?
104991-HMC327MS8G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 104991-HMC327MS8G 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 104991-HMC327MS8G?
For technical support, including 104991-HMC327MS8G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 104991-HMC327MS8G requirements.
6.How does Aetrix verify that 104991-HMC327MS8G is sourced from the original manufacturer or authorized distributors?
All 104991-HMC327MS8G 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 104991-HMC327MS8G meets industry standards.
7.What is the process for return or replacement of 104991-HMC327MS8G?
All 104991-HMC327MS8G units undergo pre-shipment inspection (PSI). If there is an issue with 104991-HMC327MS8G, 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 104991-HMC327MS8G part is unused and in its original packaging.
Return procedure for 104991-HMC327MS8G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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