TDA1302T

Data amplifier and laser supply circuit for CD player and read only optical systems

GENERALDESCRIPTION TheTDA1302Tisadataamplifierandlasersupplycircuitforthree-beampick-updetectorsappliedinawiderangeofmechanismsforCompactDiscandreadonlyopticalsystems.Thedevicecontains6amplifierswhichamplifyandfilterthefocusandradialdiodesignalsandpro

TDA1302T

Data amplifier and laser supply circuit for CD player and read only optical systems; ? Six input buffer amplifiers with low-pass filtering and with virtually no offset\n? HF data amplifier with a high or low gain mode\n? Two built-in equalizers for single or double-speed mode ensuring high performance in both modes\n? Fully automatic laser control including stabilization and an ON/OFF switch, plus a separate supply (VDDL) for power reduction\n? Adjustable laser bandwidth and laser switch-on current slope\n? Protection circuit to prevent laser damage due to supply voltage dip\n? Optimized interconnectiion between pick-up detector and digital servo processor (TDA1301T)\n? Wide supply voltage range\n? Wide temperature range\n? Low power consumption.;

GENERAL DESCRIPTION\nThe TDA1302T is a data amplifier and laser supply circuit for three-beam pick-up detectors applied in a wide range of mechanisms for Compact Disc and read only optical systems. The device contains 6 amplifiers which amplify and filter the focus and radial diode signals and provides an equalized RF signal suitable for single or double speed mode; the mode can be switched by means of the speed control pin. The device can accommodate astigmatic, single foucault and double foucault detectors and can be applied to all N-sub laser/monitor diode units even though the circuit has been optimized for the Philips CDM12 mechanisms and the digital servo controller TDA1301T. After a single initial adjustment the circuit will maintain control over the laser diode current thus resulting in a constant light output power which is independent of ageing. The IC is mounted in a small-outline package to enable it to be mounted close to the laser pick-up unit on the sledge.FEATURES\n? Six input buffer amplifiers with low-pass filtering and with virtually no offset\n? HF data amplifier with a high or low gain mode\n? Two built-in equalizers for single or double-speed mode ensuring high performance in both modes\n? Fully automatic laser control including stabilization and an ON/OFF switch, plus a separate supply (VDDL) for power reduction\n? Adjustable laser bandwidth and laser switch-on current slope\n? Protection circuit to prevent laser damage due to supply voltage dip\n? Optimized interconnectiion between pick-up detector and digital servo processor (TDA1301T)\n? Wide supply voltage range\n? Wide temperature range\n? Low power consumption.

TMR1302B

TMROmnipolarSwitch

GeneralDescription TheTMR1302BisadigitalomnipolarmagneticswitchthatintegratesTMRandCMOStechnologyinordertoprovidea magneticallytriggereddigitalswitchwithhighsensitivity,highspeed,andultra-lowpowerconsumption.Itintegratesapush-pull half-bridgeTMRmagneticsens

TMR1302G

MicroAmpereHighFrequencyResponseOmnipolarMagneticSwitchSensor

Description TMR130xisanomnipolarmagneticswitchintegrated thetunnelmagnetoresistance(TMR)magnetic sensorandCMOScircuitry,whichisabletodetect thechangeofmagneticfieldandoutputhighandlow voltagesignalsforhighaccuracypositiondetection. UnlikeHall/AMRsensors,TM

TMR1302HS

MicroAmpereHighFrequencyResponseOmnipolarMagneticSwitchSensor

Description TMR130xisanomnipolarmagneticswitchintegrated thetunnelmagnetoresistance(TMR)magnetic sensorandCMOScircuitry,whichisabletodetect thechangeofmagneticfieldandoutputhighandlow voltagesignalsforhighaccuracypositiondetection. UnlikeHall/AMRsensors,TM

TMR1302HT

MicroAmpereHighFrequencyResponseOmnipolarMagneticSwitchSensor

Description TMR130xisanomnipolarmagneticswitchintegrated thetunnelmagnetoresistance(TMR)magnetic sensorandCMOScircuitry,whichisabletodetect thechangeofmagneticfieldandoutputhighandlow voltagesignalsforhighaccuracypositiondetection. UnlikeHall/AMRsensors,TM

TMR1302HTS

MicroAmpereHighFrequencyResponseOmnipolarMagneticSwitchSensor

Description TMR130xisanomnipolarmagneticswitchintegrated thetunnelmagnetoresistance(TMR)magnetic sensorandCMOScircuitry,whichisabletodetect thechangeofmagneticfieldandoutputhighandlow voltagesignalsforhighaccuracypositiondetection. UnlikeHall/AMRsensors,TM

TMR1302HTT

MicroAmpereHighFrequencyResponseOmnipolarMagneticSwitchSensor

Description TMR130xisanomnipolarmagneticswitchintegrated thetunnelmagnetoresistance(TMR)magnetic sensorandCMOScircuitry,whichisabletodetect thechangeofmagneticfieldandoutputhighandlow voltagesignalsforhighaccuracypositiondetection. UnlikeHall/AMRsensors,TM

TMR1302S

MicroAmpereHighFrequencyResponseOmnipolarMagneticSwitchSensor

Description TMR130xisanomnipolarmagneticswitchintegrated thetunnelmagnetoresistance(TMR)magnetic sensorandCMOScircuitry,whichisabletodetect thechangeofmagneticfieldandoutputhighandlow voltagesignalsforhighaccuracypositiondetection. UnlikeHall/AMRsensors,TM

TMR1302T

MicroAmpereHighFrequencyResponseOmnipolarMagneticSwitchSensor

Description TMR130xisanomnipolarmagneticswitchintegrated thetunnelmagnetoresistance(TMR)magnetic sensorandCMOScircuitry,whichisabletodetect thechangeofmagneticfieldandoutputhighandlow voltagesignalsforhighaccuracypositiondetection. UnlikeHall/AMRsensors,TM