CXA1720Q Read/Write Amplifier (with Built-in Filters) for FDDs

CXA1720Q Read/Write Amplifier (with Built-in Filters) for FDDs

The CXA1720Q is an IC for use with floppy disk drives, and contains a Read circuit (with built-in filters), Write circuit, Erase circuit, and supply voltage detection circuit, all into a single chip. Features • Single 5 V power supply. • Filter system can be switched among four modes: 1M/2M, and inn.

Features

• Single 5 V power supply.
• Filter system can be switched among four modes: 1M/2M, and inner track/outer track. This allows for a significant reduction in the number of external parts such as differentiator constants, low-pass filters, and switches. (Compared with conventional Sony products, the number of parts has been reduced by one-half.)
• Filter characteristics can be customized.
• Low pre-amplifier input conversion noise voltage of 2.0 nV/ √ Hz (typ.) keeps Read data output jitter to a minimum. The pre-amplifier voltage gain can be selected as either 100× or 200×.
• The monostable multi.