HMC346MS8GTR Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices HMC346MS8GTR is an 8-pin SMT GaAs MMIC digital attenuator with 32 dB nominal attenuation, 2.5 dB maximum insertion loss, and 50 Ω characteristic impedance for RF signal-level control. It handles up to 18.06 dBm CW input power in a compact plastic SOIC-8 package. Available from authorized RF component distributors globally.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- HMC346MS8GTR Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of HMC346MS8GTR?
- 32 dB nominal attenuation with 50 Ω characteristic impedance provides precise RF signal-level control for microwave and mmWave system calibration paths
- 2.5 dB maximum insertion loss preserves signal integrity in low-noise receive chains while handling up to 18.06 dBm CW input power
- 8-pin SMT SOIC package enables automated board assembly and simplifies integration into phased-array antenna modules and test instrumentation
What is HMC346MS8GTR used for?
The HMC346MS8GTR is used in RF test instrumentation, phased-array antenna systems, and microwave signal chains where programmable attenuation with low insertion loss is needed across a 50 Ω system. Its 32 dB attenuation range suits automatic gain control loops in radar receivers, satellite ground stations, and electronic warfare systems that must maintain constant output power over wide input dynamic ranges. The compact SMT package integrates into dense multi-channel RF boards where manual or mechanically adjusted attenuators are not practical.
What are the specifications of HMC346MS8GTR?
| Pbfree Code | No |
| Manufacturer Package Code | RH-8-1 |
| YTEOL | 0 |
| Attenuation-Nom | 32dB |
| Characteristic Impedance | 50Ω |
| Construction | COMPONENT |
| Input Power-Max (CW) | 18.06dBm |
| Insertion Loss-Max | 2.5dB |
| JESD-609 Code | e0 |
| Mounting Feature | SURFACE MOUNT |
| Operating Frequency-Max | 8000MHz |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSSOP8,.19 |
| RF/Microwave Device Type | VARIABLE ATTENUATOR |
| Surface Mount | YES |
| Technology | GAAS |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| VSWR-Max | 1.92 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
Where can I find the HMC346MS8GTR datasheet?
HMC346MS8GTR Datasheet DownloadOfficial datasheet from Analog Devices
What are equivalent replacements for HMC346MS8GTR?
Compatible alternatives and drop-in replacements for HMC346MS8GTR:
Analog Devices Inc Variable Attenuator, -40MHz Min, 85MHz Max, 3.1dB Insertion Loss-Max, GAAS
Hittite Microwave Corp Variable Attenuator, 0MHz Min, 8000MHz Max, 2.5dB Insertion Loss-Max, GAAS
Variable Attenuator, 0MHz Min, 8000MHz Max, 2.5dB Insertion Loss-Max, GAAS
Frequently Asked Questions
What attenuation and insertion loss specs does the HMC346MS8GTR provide for RF signal chain designers?
The HMC346MS8GTR offers 32 dB nominal attenuation with a maximum insertion loss of 2.5 dB in a 50 Ω system, giving RF engineers a predictable attenuation budget for AGC loops, calibration paths, and dynamic range management in radar and communications receivers.
How much CW input power can the HMC346MS8GTR handle, and what transmit-side applications does this enable?
The HMC346MS8GTR is rated for up to 18.06 dBm (approximately 64 mW) continuous wave input power, making it suitable for transmit-side attenuation in low-to-medium power RF paths such as pre-driver stages in phased-array transmitters, signal generators, and bench test setups operating below the 1 W power level.
How does the 50 Ω impedance of the HMC346MS8GTR affect its integration into existing RF PCB layouts?
The 50 Ω characteristic impedance matches the standard impedance of coaxial connectors, microstrip transmission lines, and RF IC ports, so the HMC346MS8GTR drops into standard 50 Ω signal chains without impedance-matching networks, reducing design time and avoiding additional insertion loss from matching components.
When should an engineer choose the HMC346MS8GTR over a resistive Pi or T attenuator for a receive chain?
A discrete resistive Pi attenuator provides a fixed attenuation at low cost, but the HMC346MS8GTR is preferred when dynamic signal-level adjustment of up to 32 dB is needed during operation — for example in adaptive gain control loops in phased-array radar where received signal power can vary by 40 dB or more across scan angles.
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Why Buy from FindMyChip
About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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