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TZA1032_1257598

Features: · Separate 3.3 V digital, analog and output driver powersupplies· Selective power-down of internal functions via I2C-busfor power saving· Low voltage-swing of the differential Run Length LimitedCode (RLC) inputs for high speed transmission andgood electromagnetic compatibility· High-impe...

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SeekIC No. : 004534321 Detail

TZA1032_1257598: Features: · Separate 3.3 V digital, analog and output driver powersupplies· Selective power-down of internal functions via I2C-busfor power saving· Low voltage-swing of the differential Run Length L...

TZA1032_1257598 Data Sheet

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Part Number:
TZA1032_1257598
Supply Ability:
5000

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  • 1~5000
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  • Negotiable
  • Processing time
  • 15 Days
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Product Details

Description



Features:

· Separate 3.3 V digital, analog and output driver power
supplies
· Selective power-down of internal functions via I2C-bus
for power saving
· Low voltage-swing of the differential Run Length Limited
Code (RLC) inputs for high speed transmission and
good electromagnetic compatibility
· High-impedance input switching to control two or more
TZA1032 ICs in parallel for double writer applications
· Supports I2C-bus interface up to 400 kbits/s with block
transfer feature in slave mode only
· 3.3 and 5 V tolerant input logic
· Supports any RLC code with run lengths from 1 to 15
· Automatic write-read switching for run lengths ³16
· Channel decoding rate up to 105 Mbits/s, according to VD 4´
· Look back function to enable write pre-compensation by ata dependent write strategy with a land-pit ompensation up to five
· Supports Forced Erase (FE) mode for quick initialisation f disc
· Fixed propagation delay within RLC clock periods to llow accurate data linking on disc
· Supports CD-R, CD-RW, DVD+RW, DVD-R, DVD-RW nd DVR formats or any comparable existing or future ormat
· Programmable write strategy via I2C-bus; completely flexible up to a maximum of two output level transitions per RLC clock period
· Pulse timing resolution of 2 ns at 500 MHz internal clock
· Minimum pulse width of 4 ns at 500 MHz internal clock
· Four programmable threshold current levels with an 8-bit resolution, and eight programmable delta levels with an 8-bit resolution
· Independent laser threshold and laser delta current control
· Programmable modulation unit
· Pointer memory mapping to allow compact write strategy coding
· PLL oscillator features a self-learning oscillator mode for non-locked operation during read
· Wide frequency range: PLL locking factor ³2.5
· Two output channels, delta and threshold current levels, each capable of delivering 240 mA delta and 200 mA threshold peak current to the output
· Rise and fall times of 1 to 2 ns, depending on package and laser
· Typical output resistance of 120 W
· Programmable current step size for a threshold level of 0 to 1 mA at a 16-bit resolution, and a delta level of 0 to 1.2 mA at an 8-bit resolution
· Internal modulator up to 565 MHz
· Forward Sense (FS) Laser Power Control (LPC) loop to compensate laser drift due to temperature and aging
· Internal set point generation to allow read-write switching without any transient effects
· Digital LPC algorithm based on FS feedback
· Single forward sense diode connection
· Programmable FS input current gain to allow for spread in FS efficiency
· Supports running Optimum Power Control (OPC) loop, so called alpha loop, to monitor and control the quality of writing
· Programmable loop bandwidths: up to 1 kHz for the LPC, and up to 50 kHz for the alpha loop
· Programmable minimum and maximum limiting of laser currents and running OPC range
· Programmable OPC stepper.


Pinout

Connection Diagram


Description

The TZA1032 is a laser driver circuit which is intended for  wide range of recordable and re-writable optical drives. igure 3 shows a function diagram of TZA1032 in relation o a disc recording system. The TZA1032 is intended to be ocated close to the laser diode on the Optical Pick-up nit (OPU). It can be used in CD-R/RW systems ith 1´, 2´, 4´, 8´, 12´, 16´ and 24´ (24´ is not  uaranteed yet: evaluation pending) speed and in VD-R/RW systems with 1´, 2´ and 4´ speed (4´ is not uaranteed yet). Furthermore, it is suitable for future tandards like DVR




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