Both devices can support current or voltage bias in read mode, and provide advanced protection of the GMR heads. The SR1761A and SR1766A offer fully programmable operations through a high-speed serial port. Head selection, write current, write damping, bias current, thermal asperity threshold and mode, read gain, low-power idle, sleep mode selection, and other critical drive parameters can all be accessed via the serial interface. The preamps also incorporated yield and performance enhancement features such as user programmable read bandwidth, active write current damping, fault detection, GMR head protection, and thermal asperity correction. Additional channel and package options are planned.
Samples are now available.
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