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Analog Devices Inc. HMC435MS8GE
- Part No.:
- HMC435MS8GE
- Manufacturer:
- Analog Devices Inc.
- Category:
- RF Switches
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
HMC435MS8GE.pdf
- Description:
- IC RF SWITCH SPDT 4GHZ 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,762
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Product details
Overview
HMC435MS8GE from Analog Devices (formerly Hittite Microwave) is a GaAs MESFET non-reflective SPDT RF switch operating from DC to 4 GHz, delivering 0.8 dB typical insertion loss at 2.5 GHz, 60 dB isolation at 1 GHz, and +31 dBm P1dB compression - deployed in cellular/3G, WiMAX/4G base stations and test instrumentation.
For engineers reviewing the HMC435MS8GE datasheet, HMC435MS8GE pinout, HMC435MS8GE application, or HMC435MS8GE equivalent, key selection criteria include its 0/+5 V positive control interface, MSOP-8G package with exposed ground paddle, non-reflective architecture, and verified performance across -40°C to +85°C operation.
Technical Context
This SPDT switch uses GaAs MESFET technology with integrated bias circuitry enabling single-supply 0/+5 V control and ultra-low DC current draw. Its non-reflective topology terminates off-state ports internally to 50 Ω, eliminating external termination components.
The device supports broadband RF routing up to 4 GHz with matched 50 Ω DC-coupled I/O (RFC, RF1, RF2), requiring external DC blocking capacitors. Thermal design relies on soldering pins 3/5/8 and the exposed ground paddle to PCB RF ground for effective heat dissipation via 118 °C/W channel-to-paddle thermal resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Frequency Range | DC to 4.0 GHz - enables full coverage of cellular (700–2700 MHz), WiMAX (2.3–3.8 GHz), and test instrumentation bands. |
| Insertion Loss | 0.8 dB typ. @ DC–2.5 GHz - minimizes signal attenuation in active signal path without requiring gain compensation. |
| Isolation | 60 dB @ 1 GHz - prevents crosstalk between RFC and selected RF port in dense RF front-end layouts. |
| Input IP3 | +51 dBm @ 0.5–1.0 GHz - supports high-linearity operation in multi-carrier LTE/WiMAX transceivers. |
| P1dB Compression | +31 dBm @ 0.5–4.0 GHz - handles high-power transmit signals up to WiMAX band edge without distortion. |
| Switching Speed | 40 ns tRISE/tFALL - ensures fast TDD mode switching in time-division duplex systems. |
| Control Voltage | 0 / +5 Vdc - simplifies interface with standard logic-level controllers without level-shifting circuitry. |
Pinout & Package
Package: MSOP-8G (exposed ground paddle), 3.0 × 3.0 × 0.85 mm body, RoHS-compliant matte Sn finish, MSL1 rated (260 °C peak reflow). Requires soldering of pins 3/5/8 and bottom paddle to PCB RF ground per thermal and RF return path requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Control Input A | Selects RFC→RF1 path when low (0 V); part of complementary control pair with Pin 2. |
| 2 (B) | Control Input B | Selects RFC→RF2 path when low (0 V); complements Pin 1 per truth table; both inputs tolerate ±0.2 Vdc. |
| 3 (RFC) | Common RF Port | DC-coupled 50 Ω input; requires external DC blocking capacitor; primary signal entry point. |
| 4 (N/C) | No Connect | Internally unconnected; must be grounded externally per measurement conditions and layout best practice. |
| 5 (RF1) | RF Output 1 | DC-coupled 50 Ω output; routed when Pin 1 = low/Pin 2 = high; requires external DC blocking capacitor. |
| 6,7 (GND) | Ground Terminals | RF and DC ground reference; must be soldered to PCB ground plane; supports low-inductance return path. |
| 8 (RF2) | RF Output 2 | DC-coupled 50 Ω output; routed when Pin 1 = high/Pin 2 = low; requires external DC blocking capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Non-reflective architecture | Internal 50 Ω terminations on off-state RF ports eliminate need for external resistors and reduce board space. |
| Positive 0/+5 V control | Direct compatibility with FPGA/GPIO and microcontroller outputs; draws only 25 μA per control line. |
| Ultra-small MSOP-8G footprint | 14.8 mm² area with exposed paddle enables high-density RF module integration in compact form factors. |
| High linearity (IP3 & P1dB) | +51 dBm IP3 and +31 dBm P1dB support clean signal routing in high-power LTE/WiMAX transmit chains. |
| Wide temperature range | Specified performance from -40°C to +85°C ensures reliability in outdoor base station and industrial test equipment. |
Applications
| Cellular Base Stations | WiMAX/4G Access Points |
|---|---|
Use Scenario: RF path selection between dual-transmit antennas in TDD/FDD macrocell BTS with dynamic antenna tuning. IC Role / Device Role / Timing Role: Non-reflective SPDT switch routing main TX signal to either antenna while maintaining isolation >47 dB up to 2.5 GHz. Use Value: Enables seamless antenna switching without external termination, preserving EVM and ACLR in 20 MHz LTE channels. | Use Scenario: Frequency-agile front-end in fixed wireless access point supporting 2.3–3.8 GHz WiMAX band. IC Role / Device Role / Timing Role: High-linearity RF switch selecting between diversity receive paths or calibration loops during channel estimation. Use Value: Delivers +31 dBm P1dB and +45 dBm IP3 across full WiMAX band, preventing receiver desensitization. |
| CATV/CMTS Infrastructure | RF Test Instrumentation |
Use Scenario: Signal routing in upstream/downstream path switching modules of cable modem termination systems. IC Role / Device Role / Timing Role: DC-coupled SPDT switch handling 5–85 MHz upstream and 54–1002 MHz downstream bands with <1.0 dB loss. Use Value: Maintains flat group delay and return loss >15 dB across CATV spectrum, ensuring DOCSIS 3.1 compliance. | Use Scenario: Automated RF path configuration in vector network analyzer (VNA) calibration and switching matrices. IC Role / Device Role / Timing Role: Fast-switching (40 ns) non-reflective element enabling repeatable S-parameter measurements across 4 GHz bandwidth. Use Value: Eliminates mismatch-induced ripple in calibration standards due to internal 50 Ω off-state termination. |
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; 0.9 dB IL @ 2.7 GHz; 45 dB isolation @ 2 GHz; 0/–5 V control; no internal termination. | Requires external 50 Ω termination resistors; lower power handling (+28 dBm P1dB). | Preferred where cost-sensitive Si process and negative control voltage align with system architecture. |
| Skyworks SKY13370-374LF | GaAs pHEMT; 0.7 dB IL @ 2.5 GHz; 52 dB isolation @ 2 GHz; 1.8/3.3 V control; reflective design. | Reflective architecture demands external termination; optimized for 1.8 V logic interfaces in portable infrastructure. | Selected when low-voltage control and minimal IL outweigh need for non-reflective behavior. |
Compared with QM11036 and SKY13370-374LF, the HMC435MS8GE uniquely combines non-reflective operation, +5 V positive control, and +31 dBm P1dB in an MSOP-8G package - making it optimal for high-power, thermally constrained, and termination-free RF routing in fixed infrastructure.
Availability
HMC435MS8GE is available at Aetrix Electronics and suitable for cellular base stations, WiMAX/4G access points, and RF test instrumentation requiring stable component supply, long-lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for HMC435MS8GE 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, integrating its high-frequency RF IC portfolio into ADI's broader communications and defense solutions.
The HMC435MS8GE belongs to Hittite's legacy GaAs SPDT switch product line, engineered specifically for broadband infrastructure applications demanding high isolation, linearity, and thermal robustness from DC to 4 GHz.
FAQ
What is the control voltage requirement for reliable operation of the HMC435MS8GE?
The HMC435MS8GE requires a 0 Vdc (low) and +5 Vdc (high) control interface with ±0.2 Vdc tolerance per the truth table. Each control input draws only 25 μA typical, enabling direct drive from standard logic outputs. Exceeding the absolute maximum rating of –0.5 V to +7.5 Vdc risks permanent damage to the GaAs MESFET control gates.
Does the HMC435MS8GE require external DC blocking capacitors?
Yes - all three RF ports (RFC, RF1, RF2) are DC-coupled and require external DC blocking capacitors, as explicitly stated in the pin descriptions and truth table notes. Omitting these capacitors risks DC bias disruption and potential damage from unintended DC paths in cascaded RF stages.
How is thermal management implemented for the HMC435MS8GE in high-power operation?
The HMC435MS8GE relies on soldering pins 3, 5, 8, and the exposed ground paddle directly to the PCB RF ground plane. Its thermal resistance is specified as 118 °C/W (insertion path) and 125 °C/W (termination path), so proper copper pour and via stitching beneath the paddle is essential to maintain junction temperature below 150 °C at +31 dBm input.
What is the significance of the "non-reflective" designation for the HMC435MS8GE?
The non-reflective architecture means the HMC435MS8GE internally terminates the off-state RF port to 50 Ω, preventing signal reflections that cause VSWR degradation and measurement errors. This eliminates the need for external 50 Ω resistors, reducing bill-of-materials and layout complexity in sensitive RF paths.
Can the HMC435MS8GE be used in hot-switching scenarios above +24 dBm?
No - the datasheet explicitly prohibits hot-switching RF power levels greater than +24 dBm under 0/+5 V control conditions. Doing so risks gate oxide stress and accelerated degradation. For higher-power switching, use sequenced control or external attenuators to limit instantaneous RF stress during transition.
HMC435MS8GE 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:
- General Purpose
- Topology:
- Absorptive
- Circuit:
- SPDT
- Frequency Range:
- 0Hz ~ 4GHz
- Isolation:
- 35dB
- Insertion Loss:
- 1.5dB
- Test Frequency:
- 4GHz
- P1dB:
- 31dBm
- IIP3:
- 45dBm
- Features:
- -
- Impedance:
- 50Ohm
- Voltage - Supply:
- 5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP-EP
HMC435MS8GE FAQ
1.How can I place an order for HMC435MS8GE through Aetrix?
Please submit a Request for Quotation (RFQ) for HMC435MS8GE 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 HMC435MS8GE reliable?
The price and inventory of HMC435MS8GE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC435MS8GE is usually 5 days.
3.What payment methods are accepted for HMC435MS8GE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC435MS8GE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HMC435MS8GE?
HMC435MS8GE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HMC435MS8GE 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 HMC435MS8GE?
For technical support, including HMC435MS8GE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC435MS8GE requirements.
6.How does Aetrix verify that HMC435MS8GE is sourced from the original manufacturer or authorized distributors?
All HMC435MS8GE 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 HMC435MS8GE meets industry standards.
7.What is the process for return or replacement of HMC435MS8GE?
All HMC435MS8GE units undergo pre-shipment inspection (PSI). If there is an issue with HMC435MS8GE, 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 HMC435MS8GE part is unused and in its original packaging.
Return procedure for HMC435MS8GE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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