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LD4000

Features: · Register programmable data rates from 67 to 212 Mbit/s· Sampled data read channel with Viterbi qualification· Programmable filter for PR4 equalization· Five tap transversal filter with adaptive PR4 equalization· 8/9 GCR ENDEC· Data Scrambler / Descrambler· Presettable Precoder state· P...

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SeekIC No. : 004393034 Detail

LD4000: Features: · Register programmable data rates from 67 to 212 Mbit/s· Sampled data read channel with Viterbi qualification· Programmable filter for PR4 equalization· Five tap transversal filter with a...

LD4000 Data Sheet

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Part Number:
LD4000
Supply Ability:
5000

Price Break

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

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Upload time: 2024/12/25

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Product Details

Description



Features:

· Register programmable data rates from 67 to 212 Mbit/s
· Sampled data read channel with Viterbi qualification
· Programmable filter for PR4 equalization
· Five tap transversal filter with adaptive PR4 equalization
· 8/9 GCR ENDEC
· Data Scrambler / Descrambler
· Presettable Precoder state
· Programmable write precompensation
· Low operating power - 1000mW maximum
at 5.5V to allow use of TOFP packages. Active power management is applied to achieve this target
· Register programmable power management (<5 mW power down mode)
· 4-bit nibble and byte wide bi-directional NRZ data interface
· 8 bit direct write mode automatically configured for CLK=VCO/8
· Serial Interface port for access to internal program storage registers
· Single power supply (5V ± 10%)
· Small package footprint: 100 lead TOFP


Pinout

Connection Diagram


Description

The LD4000 is a high performance BICMOS read channel IC that provides all of the functions needed to implement an entire Partial Response Class 4 (PR4) read channel for zoned recording hard disk drive systems with data rates from 67 to 212 Mbps.
Functional blocks include a serial port, an automatic gain control amplifier, a programmable filter, an offset canceller, a peak detecting pulse qualifier, an adaptive transversal filter, a Viterbi qualifier, a 8/9 GCR ENDEC, a data synchronizer, a time base generator, an integrating servo demodulator, as shown in figure 1.
The part requires a single +5V power supply. The part utilizes an advanced BiCMOS process technology along with advanced circuit design techniques which results in a high performance LD4000 with low power consumption




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