CXA3071N Overview
The CXA3071N 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.
CXA3071N Key Features
- Single 5V power supply
- All filter, write current and other characteristics can be set with a single external resistor
- 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
- 1M/outer track f0 and the fc ratio for each mode can be customized
- Preamplifier voltage gain can be set to 45dB or 48dB by switching the filter mode and inner/outer track
- Preamplifier and filter output are monitored with the same pins. These pins are normally set to filter output, but the p
- Time domain filter can be switched between two modes: 1M, 1.6M/2M. In addition, the pulse width can be customized
- Write current can be switched among six modes according to the mode and inner/outer track setting. The current value can
- Erase current remains constant, and the current value can be customized