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LD3301-X

Features: Current Bias/Current Sense Architecture+5V or +3.3V Supply3.3V CMOS compatible Logic InterfacePower ManagementIntegrated reference resistorSingle ended input to reader with one side grounded externallyDifferential read outputGMR resistor range: 25 to 65Programmable 5 bit GMR head bias cu...

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SeekIC No. : 004393014 Detail

LD3301-X: Features: Current Bias/Current Sense Architecture+5V or +3.3V Supply3.3V CMOS compatible Logic InterfacePower ManagementIntegrated reference resistorSingle ended input to reader with one side ground...

LD3301-X Data Sheet

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Part Number:
LD3301-X
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/4/27

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Product Details

Description



Features:

Current Bias/Current Sense Architecture
+5V or +3.3V Supply
3.3V CMOS compatible Logic Interface
Power Management
Integrated reference resistor
Single ended input to reader with one side grounded externally
Differential read output
GMR resistor range: 25 to 65
Programmable 5 bit GMR head bias current: Ib = 2mA-9.75mA
Programmable gain control: 130V/V & 200V/V @ Rmr = 35, Ib = 6mA
Wide bandwidth: BW = 250 MHz at -1dB @ Rmr = 35
Programmable booster for wide bandwidth
Equivalent input noise: Vn = 0.8nV/Hz @ Rmr = 35
Impedance matched differential inputs for WDX and WDY
Programmable 5 bit write head current: Iw = 15 mA to 60 mA
Servo Bank Write Mode
Rise/Fall Time: 1ns@5V / 2ns@3.3V Typical (Iw = 40mA (0-p), Ltf = 50nH, Rtf = 15)
Fast recovery times: W/R = 200ns @ 5V supply, W/R= 400ns @ 3.3V supply
Programmable write current overshoot control
Read fault and Write fault detection
Rmr value measurement mode
GMR Head Open/Short and TF Head Protection
Programmable (7 bits) thermal asperity detection threshold control and programmable thermal asperity  ompensation
Serial port read back capability
GMR ESD protection diodes on reader
Internal capacitor


Description

The LD3301-X are BiCMOS devices that support a 1-channel (2-channel) GMR Preamplifier. They are designed for use with 4-terminal magnetoresistive recording heads, providing a low noise GMR head amplifier, GMR bias current control, thin film write driver, write current control, thermal asperity detection and correction. Fast recovery mode can be also programmed to put the chip faster in read mode from any other existing modes. The LD3301-X is programmable for read gain, GMR resistance measurement, and thermal asperity threshold level. The device allows multiple channel write functions for servo writing. Half or all of the heads can be simultaneously selected in the servo write mode. Features and thresholds are controlled through a serial port interface. The LD3301-X requires +3.3V or +5V supply voltage. Available in flip-chip or TSSOP packages




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