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XR-3470B - Floppy Disk Read Amplifier

Download the XR-3470B datasheet PDF. This datasheet also covers the XR-3470A variant, as both devices belong to the same floppy disk read amplifier family and are provided as variant models within a single manufacturer datasheet.

Description

The XR-3470Al3470B is read amplifier system designed primarily for use in a floppy disk drive system.

It is designed to perform the complete readback function, by accepting the readback signal from a magnetic head and converting it into digital output pulses.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (XR-3470A-Exar.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Exar (now MaxLinear)

Part Number Description
XR-3470A Floppy Disk Read Amplifier
XR-3471 Floppy Disk Write Amplifier
XR-3403 (XR-3403 / XR-3503) Quad Operational Amplifiers
XR-3448 Floppy Disk Read/Write
XR-346 Programmable Quad Operational Amplifiers

Full PDF Text Transcription

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XR-3470A/3470B Floppy Disk Read Amplifier GENERAL DESCRIPTION The XR-3470Al3470B is read amplifier system designed primarily for use in a floppy disk drive system. It is designed to perform the complete readback function, by accepting the readback signal from a magnetic head and converting it into digital output pulses. To perform this function, the circuit contains a high-frequency amplifier, an active differentiator, a zero-crossing detector, and a time domain filter. The XR-3470Al3470B is suited for systems with data transfer rates up to 3 megabaud. High input sensitivity allows operation with signal levels as low as 1.4 mV pp, which gives it the flexibility to be used for single or double density floppy disk systems.
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