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Analog Devices Inc. HMC485MS8GTR
- Part No.:
- HMC485MS8GTR
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Mixers
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
HMC485MS8GTR.pdf
- Description:
- IC MMIC MIXER HI IP3 8-MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,365
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Product details
Overview
HMC485MS8GTR from Analog Devices (formerly Hittite Microwave) is a high-dynamic-range GaAs MMIC passive mixer with integrated LO amplifier, operating from 1.7 to 2.4 GHz RF and supporting 50–300 MHz IF bandwidth. It delivers +34 dBm input IP3 (downconversion), 9.2 dB typical conversion loss, and accepts low LO drive of –2 to +4 dBm at 5 V/45 mA. Used in GSM/UMTS/W-CDMA infrastructure transceivers requiring high linearity and compact footprint.
For engineers reviewing the HMC485MS8GTR datasheet, HMC485MS8GTR pinout, HMC485MS8GTR application, or HMC485MS8GTR equivalent, this page provides verified RF mixer specifications, validated MSOP-8 pin mapping, real-world up/down-conversion performance data, and direct alternatives for cellular base station and cable modem termination system designs.
Technical Context
This is a passive double-balanced MMIC mixer with monolithically integrated LO amplifier - eliminating external LO buffer stages while maintaining high isolation and linearity. The architecture supports both upconversion and downconversion with low-side LO injection and exhibits strong harmonic suppression (e.g., 2nd/3rd LO harmonics ≤ –14 dBc at RF port).
It operates across four RF sub-bands (1.7–1.8, 1.8–2.0, 2.0–2.2, 2.2–2.4 GHz), each with specified conversion loss, IP3, and P1dB min/typ/max values. Temperature-stable performance is confirmed from –40°C to +85°C, with input IP3 varying only ±1.5 dB over that range at 0 dBm LO drive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| RF Frequency Range | 1.7–2.4 GHz - covers full PCS/UMTS Band I/II/III for cellular infrastructure |
| IF Frequency Range | 50–300 MHz - supports low-side LO configurations in W-CDMA and CDMA transmit/receive chains |
| Input IP3 (Downconv.) | +34 dBm typ. - enables handling of strong interferers without distortion in dense RF environments |
| Conversion Loss | 9.2 dB typ. - defines signal path attenuation; requires minimal IF gain staging |
| LO Drive Level | –2 to +4 dBm - eliminates need for high-power LO synthesizers or external amplifiers |
| Supply Requirement | 5 V @ 45 mA - single positive rail powers integrated LO amplifier only; RF/IF paths are passive |
| Operating Temp. | –40°C to +85°C - qualified for outdoor macrocell and indoor distributed antenna systems |
Pinout & Package
Package: 8-lead MSOP (Mini Small Outline Package), 3.0 × 3.0 × 0.85 mm, exposed paddle, MSL1, Sn/Pb lead finish. Total footprint = 14.8 mm².
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | LO Input | AC-coupled 50 Ω matched port; accepts –2 to +4 dBm LO drive directly |
| 2 | No Connect | Internally unconnected; must remain floating per datasheet |
| 3, 6, 7 | Ground | RF ground terminals; require low-inductance soldering to PCB ground plane |
| 4 | Vdd | 5 V supply for integrated LO amplifier; requires external RF bypass capacitor |
| 5 | IF Output/Input | DC-coupled port; supports DC–300 MHz IF; max ±40 mA DC current |
| 8 | RF Input/Output | DC-coupled 50 Ω matched port; handles +19 dBm P1dB input signals |
Key Features
| Feature | Design Value |
|---|---|
| Integrated LO amplifier | Reduces bill-of-materials by eliminating discrete LO buffer; enables direct connection to PLL/VCO outputs |
| +34 dBm input IP3 | Outperforms many active FET mixers in linearity while retaining passive mixer reliability and noise floor |
| Ultra-small 14.8 mm² footprint | Enables dense RF front-end layouts in space-constrained small-cell and CPE designs |
| 50–300 MHz IF bandwidth | Supports wideband modulation schemes including OFDMA and multi-carrier W-CDMA |
| High LO-to-RF isolation | ≥12 dB min. - minimizes LO leakage into antenna path, easing filter requirements |
Applications
| GSM/EDGE Base Station Receiver | W-CDMA Femtocell Transmitter |
|---|---|
Use Scenario: Downconverting 1.9–2.0 GHz UMTS Band I signals to 140–210 MHz IF in indoor femtocell units. IC Role / Device Role / Timing Role: Passive mixer core with integrated LO amplifier; performs RF-to-IF translation with minimal added noise or distortion. Use Value: +34 dBm IP3 ensures clean reception under co-site interference; 9.2 dB conversion loss simplifies IF gain budgeting. |
Use Scenario: Upconverting 120 MHz IF signals to 2.11–2.17 GHz Band I uplink in residential femtocells. IC Role / Device Role / Timing Role: High-linearity upconverter stage accepting low-level IF and delivering robust RF output with suppressed harmonics. Use Value: –2 to +4 dBm LO drive tolerance allows use of low-power synthesizers; 50–300 MHz IF range accommodates flexible digital IF architectures. |
| Cable Modem Termination System (CMTS) | PCS Band Infrastructure Transceiver |
Use Scenario: Downconverting DOCSIS 3.1 upstream channels (5–85 MHz) from 5–42 MHz IF to baseband in headend receivers. IC Role / Device Role / Timing Role: High-dynamic-range mixer enabling simultaneous reception of multiple upstream carriers without intermodulation. Use Value: +27 dBm upconversion IP3 and +34 dBm downconversion IP3 prevent spectral regrowth in multi-channel operation. |
Use Scenario: Dual-role RF front-end component in 1.88–1.98 GHz PCS Band II base station radios. IC Role / Device Role / Timing Role: Reconfigurable mixer supporting both receive (downconvert) and transmit (upconvert) paths via LO frequency tuning. Use Value: Validated performance across all four RF sub-bands ensures consistent behavior across entire PCS band without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-IP3 RF mixer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HMC1048LP4E | Wider RF range (1.5–3.5 GHz), higher +37 dBm IP3, but requires external LO amp and larger 4×4 mm QFN package | Better suited for multi-band macro base stations needing broader frequency coverage | Select when wider RF bandwidth and higher linearity outweigh size and integration trade-offs |
| ADL5801ACPZ-R7 | Active mixer with 2.5–3.9 GHz RF range, 5.5 dB lower conversion loss, but consumes 120 mA and lacks integrated LO amp | Preferred for battery-powered portable test equipment where LO drive flexibility is critical | Choose when lower conversion loss and wider LO frequency agility justify higher power and external LO buffering |
Compared with HMC485MS8GTR, HMC1048LP4E offers extended frequency coverage and superior IP3 but sacrifices integration and compactness; ADL5801ACPZ-R7 provides lower loss and broader LO tuning but demands more power and external support circuitry - making HMC485MS8GTR optimal for size- and power-constrained infrastructure modules requiring plug-and-play LO drive.
Availability
HMC485MS8GTR is available at Aetrix Electronics and suitable for GSM/EDGE base station receivers, W-CDMA femtocell transmitters, cable modem termination systems, and PCS band infrastructure transceivers requiring stable component supply and legacy RF mixer compatibility.
Supply support for HMC485MS8GTR 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, specializing in microwave ICs for communications, defense, and instrumentation markets.
HMC485MS8GTR belongs to Hittite's legacy high-IP3 GaAs MMIC mixer family, designed specifically for cellular infrastructure applications demanding exceptional linearity, low LO drive, and minimal board area in SMT-based RF front ends.
FAQ
What is the absolute maximum LO drive level for HMC485MS8GTR?
The absolute maximum LO drive level for HMC485MS8GTR is +10 dBm, as specified in the Absolute Maximum Ratings table. Exceeding this may cause permanent damage to the integrated LO amplifier. For reliable operation, the recommended LO drive remains –2 to +4 dBm, where conversion loss and IP3 are characterized and optimized. Always use DC blocking and 50 Ω matching on the LO port to avoid reflections that could elevate effective input power beyond ratings.
Does HMC485MS8GTR support DC-coupled IF operation?
Yes, HMC485MS8GTR supports DC-coupled IF operation on Pin 5 (IF Port), but strict current limits apply: the pin must not sink or source more than ±40 mA DC current. For AC-coupled IF applications, an external series capacitor is required to block DC while passing the desired IF band (50–300 MHz). This dual-mode capability makes HMC485MS8GTR suitable for both zero-IF and low-IF receiver architectures.
Is HMC485MS8GTR pin-compatible with HMC485MS8GE?
Yes, HMC485MS8GTR is functionally and mechanically identical to HMC485MS8GE - both share the same MSOP-8 package outline, pinout, electrical specifications, and thermal characteristics. The sole difference is RoHS compliance: HMC485MS8GE uses 100% matte tin lead finish and 260 °C peak reflow, whereas HMC485MS8GTR (and legacy HMC485MS8G) uses Sn/Pb finish rated for 235 °C. No PCB layout changes are needed when substituting between them.
What is the typical LO-to-RF isolation performance of HMC485MS8GTR?
HMC485MS8GTR delivers ≥12 dB minimum LO-to-RF isolation across its 1.7–2.4 GHz RF band at +25°C, with typical values reaching 15 dB in the 1.8–2.0 GHz sub-band. This isolation reduces LO radiation into the antenna path, easing filtering requirements and improving transmitter spectral purity. Performance remains stable over temperature: measured isolation varies by less than 3 dB from –40°C to +85°C at fixed LO/RF frequencies.
Can HMC485MS8GTR be used for upconversion applications?
Yes, HMC485MS8GTR is fully characterized for upconversion, delivering +27 dBm typical input IP3 and 9.5 dB typical conversion loss in that mode. Its balanced architecture suppresses even-order spurs, and measured m×n spurious outputs (e.g., 2LO–RF, 3LO–2RF) remain ≤ –22 dBc across the band. Application notes confirm successful use in W-CDMA and LTE FDD uplink paths where low LO drive and high linearity are critical.
HMC485MS8GTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- RF Type:
- W-CDMA, CDMA, GSM, UMTS
- Frequency:
- 1.7GHz ~ 2.4GHz
- Number of Mixers:
- 1
- Gain:
- -
- Noise Figure:
- 9.8dB
- Secondary Attributes:
- Up/Down Converter
- Current - Supply:
- 45mA
- Voltage - Supply:
- 5V
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP-EP
HMC485MS8GTR FAQ
1.How can I place an order for HMC485MS8GTR through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC485MS8GTR 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 HMC485MS8GTR reliable?
The price and inventory of HMC485MS8GTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC485MS8GTR is usually 5 days.
3.What payment methods are accepted for HMC485MS8GTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC485MS8GTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC485MS8GTR?
HMC485MS8GTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC485MS8GTR 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 HMC485MS8GTR?
For technical support, including HMC485MS8GTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC485MS8GTR requirements.
6.How does Aetrix verify that HMC485MS8GTR is sourced from the original manufacturer or authorized distributors?
All HMC485MS8GTR 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 HMC485MS8GTR meets industry standards.
7.What is the process for return or replacement of HMC485MS8GTR?
All HMC485MS8GTR units undergo pre-shipment inspection (PSI). If there is an issue with HMC485MS8GTR, 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 HMC485MS8GTR part is unused and in its original packaging.
Return procedure for HMC485MS8GTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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