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TLS2154

Features: ` Operate From a Single 5-V Supply (±10%)` Low-Power Dissipation: Read Mode = 105 mW Typical Idle Mode = 0.5 mW Typical` High Performance: Read-Mode Gain = 300 V/V Typical Input Noise = 0.50 nV / Hz Typical Input Capacitance = 8.5 pF Typical Write-Current Range = 3 mA to 35 mA` Ban...

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SeekIC No. : 004522143 Detail

TLS2154: Features: ` Operate From a Single 5-V Supply (±10%)` Low-Power Dissipation: Read Mode = 105 mW Typical Idle Mode = 0.5 mW Typical` High Performance: Read-Mode Gain = 300 V/V Typical Input Noise ...

TLS2154 Data Sheet

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Part Number:
TLS2154
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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Product Details

Description



Features:

 `  Operate From a Single 5-V Supply (±10%)
 `  Low-Power Dissipation:
   Read Mode = 105 mW Typical
   Idle Mode = 0.5 mW Typical
 `  High Performance:
   Read-Mode Gain = 300 V/V Typical
   Input Noise = 0.50 nV / Hz Typical
   Input Capacitance = 8.5 pF Typical
   Write-Current Range = 3 mA to 35 mA
 `  Bank-Write Function
 `  Designed for Two-Terminal Thin-Film or Metal-In-Gap (MIG) Recording Head
 `  Write-Current Source Programmable from 3 mA to 35 mA (Base to Peak)
 `  Power-Supply Fault Protection
 `  Write-Unsafe Detection
 `  Schottky-Isolated Damping Resistor
 `  Power-Up/-Down Protection
 `  Differential-Write Voltage 7.5 Vp-p Typical


Pinout

Connection Diagram


Specifications

Supply voltage range, VCC (see Note 1) . . . . . . . . . . . . . . . . . . .0.3 V to 6 V
Input voltage range, VI: Digital . . . . . . . . . . . . . . . . .. . . 0.3 V to VCC + 0.3 V
                                       Head port . . . . . . . . . . . . . . . . .. 0.3 V to VCC + 0.3 V
                                       WUS/SE . . . . . . . . . . . . . .. . . . . . . . . . . 0.3 V to 8 V
Output current, IO: RDX, RDY . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .   . . . 10 mA
                               WUS/SE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . 12 mA
Write current, II(W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..... . . . . . . . . 65 mA
Continuous total dissipation, Pd . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, TA . . . . . . . . . . . . .. . . . . . . 0°C to 70°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . .  . . . . 65°C to 150°C
Operating virtual junction temperature, TJ . . . . . . . . . . . . . . .. . . . . . . . . . 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . .. . . 260°C

† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended  perating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltage values are with respect to GND.


Description

The TLS2154, TLS2156, and TLS2158 are BiCMOS, monolithic preamplifiers designed for two-terminal thin-film or metal-in-gap (MIG) recording heads. The preamplifiers incorporate data-protection circuitry for all channels and feature low-noise read paths and write-current controls. When deactivated, the preamplifiers enter an idle mode that reduces power dissipation to 0.5 mW, typically. The write-current generator is disabled during power sequencing to provide power-supply fault protection.

During write and idle modes, the differential read-data (RDX and RDY) lines are placed in a high-impedance state to improve system write-to-read and idle-to-read recovery times. The servo-write feature allows increased throughput at the servo-write stage. TLS2154, TLS2156, and TLS2158 have multiple-head-select servo-write functions. Isolated damping resistors effectively switch out the resistance during read operations.

The 24-pin TLS2154 and 36-pin TLS2158 provide optional shield-line pins located adjacent to the outer-head pins that, when bonded out, can be used to reduce the effects of mutual inductance. The TLS2154, TLS2156, and TLS2158 optional flip-flop for write-data input can be enabled or disabled.




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