2 Channel Voltage Sense Amr/gmr Preamplifiers

The L6326 is a two channel BICMOS monolithic inte- grated circuit GMR pre-amplifier designed for use with four-terminal magneto-resistive (AMR and GMR heads) read/inductive write heads. The device con- sists of a voltage sense current bias or voltage bias (selectable), single ended input/ true differential out- put (RDX, RDY), low-noise high bandwidth read am- plifier and includes fast current switching write drivers which support data rates up to 500 Mb/s with 90nH write heads. The GMR pre-amplifier provides programmable read current/voltage bias and write current (5 bit DACs), fault detection circuitry and servo writing features. Read Amplifier gain, write current wave shape (over- shoot and damping) CAN be adjusted and a thermal asperity detection and correction circuit CAN be en- abled and programmed with different thresholds (6 bit DAC) through a 16-bit bi-directional serial inter- face (SDEN, SDATA, SCLK). The device operates from a +5V supply and a +8V supply (typical) for the write drivers. No external components are required if the internal trimmed resistor for reference current setting is selected. By STMicroelectronics
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L6326 Pinout will be updated soon..., now you can download the pdf datasheet to check the pinouts !
L6326 circuits will be updated soon..., now you can download the pdf datasheet to check the circuits!

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