XR-3471 Datasheet | Exar

DESCRIPTION FUNCTIONAL BLOCK DIAGRAM The XR-3471 is a write amplifier designed to provide the plete interface between write data signals and tunnel and stradd Ie erase magnetic heads. Although primarily intended for floppy disk drive systems, the XR-3471 can also be used in other magnetic media systems such as tape drives. Write and erase currents are each externally resistor programmable. Also included is circuitry for inner track write current pensation. The XR-3471, available in a 20 pin DIP or small outline package, provides TTL patible inputs. Tunnel erase delays are determined by external reistors and capacitors. CURRENT SELECT XR- 3471 FEATURES Fully Programmable Write & Erase Currents Fully Programmable Erase Turn-on/Turn-off Times (Tunnel and Straddle Erase patibility) Inhibit Output TTL patible Inputs Direct Replacement for Motorola MC3471 R/W2 R/W1 CB NC TOGGLE 20 cn APPLICATIONS Floppy...