VM3500
Description
The VM3500 is a high-performance read/write preamplifier designed for use in high-end disk drives. It provides write current c.
Key Features
- General - Single Power Supply (5 V ± 10%) - Power Up/Down Data Protect Circuitry - Very Low Power Dissipation (3 mW Typical in Sleep Mode) - Reduced Write-to-Read Recovery Time - Head Inductance Range = 0.2 - 1 µH (0.54 µH Typical) - Write Unsafe Detection - Available in 4, 6 or 8 Channels
- High Performance Reader - Read Gain = 300 V/V Typical - Input Noise = 0.5nV/ÐHz Typical - Low Input Capacitance = 8 pF Typical
- High Speed Writer - Write Current Range 5 - 25 mA - IW Rise/Fall Times = 3.3 ns (LH = 0.54 µH, IW = 10 mA b-p) - PECL or TTL Write Data Inputs - Multi-Channel Servo Write - Write Current Range (Servo) 5 - 20 mA - Optional Write Data Flip-Flop
