CXA3031Q Overview
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.
CXA3031Q Key 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 ot
- A custom selection can be made between Chebyshev (1dB ripple) and Butterworth for the filter characteristics for 1.6M, 2
- 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 between 39dB and 45dB
- In inner track mode (OTF = Low), the voltage gain is boosted by 3dB, making it possible to minimize peak shift in inner
- Time domain filter can be switched between two modes: 1M, 1.6M/2M
- Write current can be switched among three modes: 1M/1.6M/2M. The inner/outer track current ratio is fixed for each mode,