The MADP-009989 diode from MACOM Technology Solutions was designed to protect MRI receivers from high RF energy fields, including long RF pulses and RF spike pulses present in most MRI machines.
The diode acts as a passive protector (limiter) for the MRI receiver. No forward bias voltage is required to turn on the diode and it is self-biased by the RF transmitter pulse power. A switch driver is not needed for this receiver protection application.
The diode is available in two package configurations for flexibility in design. It is suitable for MRI receiver protection and body coil isolation applications.
Key features include: package configuration options (surface mount, axial lead); passivated chip; ultralow magnetic construction; non-cavity design; thermally matched configuration; low capacitance @ 0 V bias — 1.2 pF (typical); low conductance @ 0 V bias — 40 µs (maximum); and compatibility with automatic insertion equipment.
Phone: 02 8883 4670
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