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HMC265 Datasheet(PDF) 5 Page - Hittite Microwave Corporation |
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HMC265 Datasheet(HTML) 5 Page - Hittite Microwave Corporation |
5 / 6 page MICROWAVE CORPORATION 5 - 62 For price, delivery, and to place orders, please contact Hittite Microwave Corporation: 12 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order Online at www.hittite.com 5 MIC Assembly Techniques Mounting & Bonding Techiniques for Millimeterwave GaAs MMICs The die should be attached directly to the ground plane eutectically or with conductive epoxy (see HMC general Handling, Mounting, Bonding Note). 50 Ohm Microstrip transmission lines on 0.127mm (5 mil) thick alumina thin film substrates are recommended for bringing RF to and from the chip (Figure 1). If 0.254mm (10 mil) thick alumina thin film substrates must be used, the die should be raised 0.150mm (6 mils) so that the surface of the die is coplanar with the surface of the substrate. One way to accomplish this is to attach the 0.102mm (4 mil) thick die to a 0.150mm (6 mil) thick molybdenum heat spreader (moly-tab) which is then attached to the ground plane (Figure 2). Microstrip substrates should be brought as close to the die as possible in order to minimize bond wire length. Typical die-to-substrate spacing is 0.076mm (3 mils). An RF bypass capacitor should be used on the Vdd input. A 100 pF single layer capacitor (mounted eutectically or by conductive epoxy) placed no further than 0.762mm (30 mils) from the chip is recommended. The photo in figure 3 shows a typical assembly for the HMC265 MMIC chip. HMC265 v01.0701 GaAs MMIC SUB-HARMONICALLY PUMPED DOWNCONVERTER, 20 - 32 GHz Figure 3: Typical HMC265 Assembly |
Similar Part No. - HMC265 |
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Similar Description - HMC265 |
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