Microwave Journal
www.microwavejournal.com/articles/26904-passive-switch-for-mri-applications-madp-011048

Passive Switch for MRI Applications: MADP-011048

August 2, 2016

MACOM_MADP-011048_PR_PhotoFeatures dual pair of anti-parallel non-magnetic PIN diodes

Richardson RFPD Inc. announced the availability and full design support capabilities for a passive switch from MACOM Technology Solutions Inc.

The MADP-011048 uses silicon PIN diodes in a non-magnetic surface mount package. There are two sets of diode pairs, constructed in an electrically-isolated, anti-parallel configuration, that operate from 5 to 400 MHz.

The MADP-011048 is well suited for MRI passive switching applications. The PIN diodes become a high Q R-C network under small signal and behave as an effective passive rectifier or short circuit under high RF signal to tune and de-tune the resonant MRI tank circuit. The anti-parallel doublet configuration provides efficient power handling.

According to MACOM, additional key features of the MADP-011048 include:

  • Anti-parallel, self-bias configuration
  • CT = 3.0 pF, RP = 10 kΩ, VB = 80 V
  • > 50 W CW incident power handling @ 400 MHz
  • Lead-free 4 mm 8-lead HQFN package

To find more information, or to purchase this product today online, please visit the MADP-011048 webpage. The device is also available by calling 1-800-737-6937.

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