CXA3031Q - Sony Corporation

CXA3031Q Read/Write Amplifier (with Built-in Filters) for FDDs

The CXA3031Q is a monolithic IC designed for use with three-mode Floppy Disk Drives, and contains a read circuit (with a four-mode filter system), a write circuit, an erase circuit, and a supply voltage detection circuit, all on a single chip. Features • Single 5V power supply • Filter system can be switched among four modes: 1M, 1.6M/2M, which are each inne.

Features

• Single 5V power supply
• Filter system can be switched among four modes: 1M, 1.6M/2M, which are each inner track/outer track
• Filter characteristics can be set to Chebyshev (1dB ripple) for 1.6M, 2M/inner track only, and to Butterworth for the other modes
• A custom selection can be made between Chebyshev (1dB ripple) and Butterworth for the filter characteristics for 1.6M, 2M/inner track only
• Permits customization of the fc ratio
• Low preamplifier input conversion noise voltage of 2.0nV/√ Hz (typ.) keeps read data output jitter to a minimum
• Preamplifier voltage gain can be switched be.