PT9202 PTC | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 5

Technical content

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT9202 PRE1.0 - 1 - August, 2007 DVD Analog Front-End Preliminary PT9202

DESCRIPTION

The PT9202 device is a high performance DVD RF chip, it supports up to DVD 4X and CD 20X reading. Base on analog circuit part that contains some servo functions for track and focus controller; RF attenuator, AGC, programmable equalizer for DVD read channel. Auto laser power control circuit supports twin lasers system of OPU. Programmable functions of PT9202 are controlled by internal registers.

FEATURES

  • 60MHz bandwidth
  • VGA gain range is from 1.70dB to 23.65dBV
  • Support high gain mode for RW disc
  • VGA support auto gain control mode and hold mode
  • Programmable attenuator(min:0.25V/V,2bit resolution)
  • Programmable amplitude of RF signal
  • Programmable attack current for speeding up AGC loop
  • Low leakage current when AGC hold mode
  • Programmable cutoff frequency of RFEQ, range is from 2.3MHz to 27.4MHz
  • ±20% Fc accuracy
  • Programmable boost gain range of RFEQ is from 0dB to 13.4dB
  • Less than 2% total harmonic distortion
  • 7th RF equalizer and 2Fc constant group delay
  • 5% group delay variation SERVO
  • 40/80KHz for FE/RFLVL module
  • Programmable offset adjust for FE, range is ±2480mV. For TE, 1st stage range is ±240mV, 2nd stage range is ±1200mV. For LSE, range is ±620mV. For RFLVL/RFRP, 1st stage range is ±120mV, 2nd stage range is ±1200mV
  • Programmable gain for FE/TE/LSE/RFLV L/RFRP, range is from -3dB to 28dB
  • 2nd low pass filter for TE/RFRP module, range is from 75KHz to 300KHz
  • Support high gain mode for CDRW/DVD+-RW/DVD9 disc
  • Support defect/finger print/blank area detector
  • Support 2 methods(three beam, DPD) for TE generator
  • Support 2 methods(Astigmatic and Knife -edge) for FE generator
  • Support FE/TE balance gain for signal unbalance calibration
  • Programmable equalizer for the di fferential phase detection circuit
  • Support 3 bit GCA gain stage for input signals of DPD circuit, range is from -12dB to 16 dB
  • Support defect protection function for DPD circuit
  • Support BCA detect function

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT9202 PRE1.0 - 2 - August, 2007 DVD Analog Front-End Preliminary PT9202 AUTO LASER POWER CONTROL

  • Support OPU of twin lasers
  • Programmable laser power
  • Support high loop gain of ALPC circui t to avoid laser power variation VOLTAGE BIAS CIRCUIT
  • Support programmable HAVC for OPU bias voltage
  • Support VREF for internal circuit reference voltage

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT9202 PRE1.0 - 3 - August, 2007 DVD Analog Front-End Preliminary PT9202 BLOCK DIAGRAM RFIP RFIN MA MB MC MD TPI TNI CDMDI DVDMDI FOP FON CDLDO DVDLDO HAVC 4D SUM A+B+C+D Astigmatic 2D SUM (A+C),(B+D ) ALPC BLOCK Programmable BW M U X M U X Voltage Reference Block RFOP RFON RFLVL LSEO RFO RFLVL ATT VGA Equalizer Level Control Charge Pump circuit Mode control Programmable Offset Programmable Gain Programmable BW Programmable Offset Programmable Gain FE Balance GCA EQ Comp. PD GCA EQ Comp. GCA EQ Comp. PD GCA EQ Comp. MA MB MC MD Programmable BW Programmable Offset Programmable Gain 2D SUM (A+D),(B+C) Programmable BW Programmable Offset TE Balance Peak hold envelope SELBottom hold envelope LPF RFRPO Programmable BW Programmable Offset Programmable Gain M U X - DAC VREF Analog Test Block ATEST1 ATEST2 RFRP RFZC FE TE IREF Level Shift M U X DAC DFTO Programmable Gain M U X HPF 8KHz DFT LPF LPF DAC BLANKO LSELPF EQIREFAGCC RFO FDFTO LPFCAP M U X PHENV LSEC LSELPF M U X RFRP BHENV

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT9202 PRE1.0 - 4 - August, 2007 DVD Analog Front-End Preliminary PT9202 APPLICATION CIRCUIT

Tel: 886-2-66296288 Fax: 886-2-29174598 URL: http://www.princeton.com.tw PT9202 PRE1.0 - 5 - August, 2007 DVD Analog Front-End Preliminary PT9202 ORDER INFORMATION Valid Part Number Package Type Top Code PT9202-LQ(L) 64 Pins, LQFP PT9202-LQ