This document provides preliminary information on a new product with features including selectable current bias or voltage bias, differential voltage sense architecture, 6 or 4 channel versions, 38-pin TSSOP package, internal reference resistor, read channel -3dB bandwidth > 400MHz, input equivalent preamplifier voltage noise 0.5nV/rtHz, etc.
The L6327/L6332 is a BICMOS monolithic integrated circuit GMR differential preamplifier designed for use with four-terminal magneto-resistive GMR read/inductive write heads. It is available as either a six (L6327) or four (L6332) channel device and operates from a +5V supply and a -5V supply.
| Supply Voltage | +5Vdc, -5Vdc |
|---|---|
| Read channel -3dB bandwidth | > 400MHz |
| Write frequency | up to 300 MHz |
| Rise/Fall time | 0.6ns |
| Package | 38-pin TSSOP |
The device supports write frequencies up to 300 MHz under specific head conditions.
The input equivalent preamplifier voltage noise is 0.5nV/rtHz nominal.
The rise and fall time is 0.6ns when the write current is 40mA peak-to-peak.