1. Products
  2. RF and Microwave
  3. Attenuators
  4. Fixed Attenuators
  5. HMC657-Die


Features and Benefits

  • Wide Bandwidth: DC - 50 GHz
  • 9 Attenuator Products:
    0, 2, 3, 4, 6, 10, 15, & 20 dB Fixed Levels
  • Power Handling: +25 dBm
  • HMC651 & HMC658
    Die Size: 0.57 × 0.45 × 0.1 mm
  • HMC650, HMC652, HMC653, HMC654, HMC655, HMC656 & HMC657
    Die Size: 0.42 × 0.45× 0.1 mm
  • Included in the HMC-DK006 Designer’s Kit

Product Details

The HMC650/HMC651/HMC652/HMC653/HMC654/HMC655/HMC656/HMC657/HMC658 are a line of wideband fixed value 50 Ohm matched attenuator chips which offer relative attenuation levels of 0, 2, 3, 4, 6, 10, 15 and 20 dB. These passive thoughlines and attenuators are ideal for microstrip, hybrid, and multi-chip module applications where extremely flat attenuation, and excellent VSWR vs. frequency are required.

These wideband attenuators feature low inductance on-chip vias, and require no additional ground connections. The HMC650 through HMC658 are backside metallized with gold, and are suitable for eutectic or epoxy die attach. Each of the 9 products can be purchased individually by their respective part number or in a set of 10 each in the HMC-DK006 Fixed Attenuator Chip Designer’s Kit.


  • Fiber Optics
  • Microwave Radio
  • Military & Space Hybrids
  • Test & Measurement
  • Scientific Instruments
  • RF/Microwave Circuit Prototyping

Product Categories

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Tools & Simulations


Design Tool


ADIsimRF is an easy-to-use RF signal chain calculator. Cascaded gain, noise, distortion and power consumption can be calculated, plotted and exported for signal chains with up to 50 stages. ADIsimRF also includes an extensive data base of device models for ADI’s RF and mixed signal components.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
HMC657 Material Declaration Reliability Data CHIPS OR DIE
HMC657-SX Material Declaration Reliability Data CHIPS OR DIE
Wafer Fabrication Data

Sample & Buy

Ordering FAQs

See our Ordering FAQs for answers to questions about online orders, payment options and more.


Buy Now Pricing

(**) Displayed Buy Now Price and Price Range is based on small quantity orders.


List Pricing

(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Lead Times

Please see the latest communication from our CCO regarding lead times.



A Sample link will be shown above, next to the part, only for parts that are included in our sample program. Selecting the Sample button will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Price Table Help