CXA3031Q
CXA3031Q is Read/Write Amplifier (with Built-in Filters) for FDDs manufactured by Sony Semiconductor Solutions.
Read/Write Amplifier (with Built-in Filters) for FDDs For the availability of this product, please contact the sales office.
Description 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 inner track/outer track
- Filter characteristics can be set to Chebyshev (1d B ripple) for 1.6M, 2M/inner track only, and to Butterworth for the other modes
- A custom selection can be made between Chebyshev (1d B 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 2.0n V/√ Hz (typ.) keeps read data output jitter to a minimum
- Preamplifier voltage gain can be switched between 39d B and 45d B
- In inner track mode (OTF = Low), the voltage gain is boosted by 3d B, making it possible to minimize peak shift in inner tracks.
- 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, but can be customized.
- Erase current can be set by an external resistor, and remains constant. In addition, the current rise time Tr and fall time Tf are determined according to the head inductance and current. (Refer to page 20.)
- Damping resistor can be built in. Resistance can be customized between 2kΩ and 15kΩ in 1kΩ steps. A damping resistor can not be connected to this IC, however.
- Supply voltage detection circuit 32 pin QFP (Plastic)
Applications Three-mode FDDs Structure Bipolar silicon monolithic IC...
