TZA1015 TZA1015T MGK356 MGK355 MGK357 MGK358 MGK359 SAA7370A SAA7348 MGK360 - Datasheet Archive

 

DATA SHEET TZA1015 Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) Preliminary

 

INTEGRATED CIRCUITS DATA SHEET TZA1015 TZA1015 Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) Preliminary specification File under Integrated Circuits, IC01 1997 May 16 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) TZA1015 TZA1015 The device contains 6 transimpedance amplifiers to amplify and filter the focus and radial photo diode voltage input signals. The preamplifier forms a versatile, programmable interface from voltage output CD mechanisms to the Philips' digital signal processor family. FEATURES · Six input buffer amplifiers with low-pass filtering and virtually no offset · Universal photodiode IC interface using internal conversion resistors The dynamic range of this preamplifier/processor combination can be optimized for the LF servo and RF data paths. The servo channel gain is set by the ADC range of the processor. The RF data channel can be programmed in the TZA1015 TZA1015 preamplifier. The programmable RF bandwidth allows this device to be used in CD-A/V applications or CD-R, CD-R/W and CD-ROM applications with a data rate up to a maximum of 30×. The RF and LF gain can be adapted for CD-A/V, CD-R and CD-ROM discs or CD-R/W discs by means of a gain switch. In addition to this gain switch the RF gain is programmable to guarantee optimal playability. In order to enable minimal access time the TZA1015 TZA1015 generates a Fast Track Count signal which enables the decoder (ACE or MACE) to count the number of tracks during a track jump. · RF data amplifier with wide bandwidth designed for data rates up to a maximum of 30× · Programmable RF gain for CD-A/V, CD-R, CD-R/W and CD-ROM applications · Programmable RF bandwidth for optimal playability · Radial error signal for fast track counting · Programmable RF/Fast Track Count (FTC) gain for optimal dynamic range · Fully automatic laser control including stabilization and on/off switch plus a separate supply for power efficiency · Automatic monitor diode polarity selection · Adjustable laser bandwidth and laser switch-on current slope using external capacitor · Protection circuit to prevent laser damage due to supply voltage dip The device can accommodate astigmatic, single Foucault and double Foucault detectors and can be used with all laser and N- or P-sub monitor diodes. The Automatic Power Control circuit (APC) will maintain control over the laser diode current. With an on-chip reference voltage generator, a constant and stabilized output power is ensured independent of ageing. A separate power supply connection allows the internal power dissipation to be reduced by connecting a low voltage supply. · Optimized interconnection between data amplifier and Philips' digital signal processor family (CD7, ACE and MACE) · Wide supply voltage range · Wide temperature range · Low power consumption. GENERAL DESCRIPTION The TZA1015 TZA1015 is a data amplifier and laser supply circuit for 3-beam pick-up detectors found in a wide range of CD and read-only optical systems. ORDERING INFORMATION TYPE NUMBER TZA1015T TZA1015T 1997 May 16 PACKAGE NAME SO28 DESCRIPTION plastic small outline package; 28 leads; body width 7.5 mm 2 VERSION SOT136-1 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) TZA1015 TZA1015 QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply VDD(RF,LF) supply voltage 4.5 5.0 5.5 V VDD(LASER) laser supply voltage 3 - 5.5 V LF amplifiers IOS channel matching - - 1 %FS B(-3 dB) -3 dB bandwidth 65 90 115 kHz 7.5 10 12.5 MHz 15 20 25 MHz 37 50 63 MHz - - 0.4 ns - - 100 mA N-type monitor - 0.150 - V P-type monitor - VDD(RF,LF) - 0.150 - V RF amplifier B(-3 dB) td(f)(RF) -3 dB bandwidth programmable; GARF = open-circuit RF flatness delay Laser supply Io(LASER)(min) minimum laser output current VDD(LASER) = 3 V Vi(mon) monitor input voltage Temperature range Toper operating temperature 0 - 90 °C Tstg storage temperature -65 - +150 °C 1997 May 16 3 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) TZA1015 TZA1015 BLOCK DIAGRAM handbook, full pagewidth D1 D2 D3 D4 S5 6 + 7 + 8 + 9 + 10 + 11 S6 + - + + 22 + 21 + 20 + 19 + 18 + 17 RFBWS VCOM O3 - O4 - O5 - O6 - 15 26 GSE O2 - 25 GARF O1 - 28 FTC RFP RFN VDD(LF) 27 1 14 13 Vref TZA1015 TZA1015 V/I (1) MON 5 VGAP V/I 2 LD V/I 4 23 12 3 24 16 MGK356 MGK356 VDD(RF) VDD(LF) VDD(L) GND (1) Band-gap reference voltage. Fig.1 Block diagram. 1997 May 16 4 PWRON CFIL Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) TZA1015 TZA1015 PINNING SYMBOL PIN DESCRIPTION RFBWS 1 RF amplifier bandwidth select LD 2 current output to the laser diode VDD(L) 3 laser supply voltage output CFIL 4 external filter capacitor MON 5 laser monitor diode input D1 6 input photo diode amplifier 1 (central) D2 7 input photo diode amplifier 2 (central) D3 8 input photo diode amplifier 3 (central) D4 9 input photo diode amplifier 4 (central) S5 10 input photo diode amplifier 5 (satellite) S6 11 input photo diode amplifier 6 (satellite) VDD(LF) 12 LF diode and FTC amplifier supply voltage VCOM 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 GARF 28 S6 11 gain adjust for RF and FTC amplifiers 18 O5 VDD(LF) 12 gain select for CD, CD-R, CD-R/W; RF and FTC amplifiers 19 O4 17 O6 negative output RF data amplifier GSE S5 10 positive output RF data amplifier RFN 20 O3 ground RFP D4 9 RF amplifier supply voltage GND 21 O2 output photo diode amplifier 1 VDD(RF) D3 8 output photo diode amplifier 2 O1 22 O1 TZA1015 TZA1015 output photo diode amplifier 3 O2 23 VDD(RF) D2 7 output photo diode amplifier 4 O3 24 GND D1 6 output photo diode amplifier 5 O4 25 RFP MON 5 output photo diode amplifier 6 O5 26 RFN CFIL 4 power on/off switch (Vref bias generator always active) O6 27 GSE VDD(L) 3 fast track count amplifier output PWRON 28 GARF LD 2 DC reference voltage for biasing of Opto Electronic IC (OEIC) FTC RFBWS 1 common mode DC reference input Vref handbook, halfpage 1997 May 16 VCOM 13 16 PWRON Vref 14 15 FTC MGK355 MGK355 Fig.2 Pin configuration. 5 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) TZA1015 TZA1015 CHARACTERISTICS VDD(LF) = VDD(RF) = VDD(LASER) = 5.0 V; Tamb = 25 °C; PWRON = HIGH; GSE = LOW; GARF = open-circuit; RFBWS = HIGH; DC input voltages at pins VCOM, D1 to D4, S5 and S6 = 1/2VDD; output voltage at pins O1 to O6 = 0 V; IDD(LASER)(d) = 50 mA; CCFIL = 1 nF; unless otherwise specified. Diode input voltages all with respect to VCOM. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supplies VDD(RF,LF) supply voltage 4.5 5.0 5.5 V VDD(LASER) laser supply voltage 3 - 5.5 V IDD(LF) LF supply current - 13 - mA IDD(RF) RF supply current - 20 - mA IDD(LASER)(d) laser diode supply current - 50 100 mA Iq quiescent supply current PWRON = LOW - - 5.9 mA all inputs; GSE = LOW 0 - 0.6 V all inputs; GSE = HIGH 0 - 0.15 V 1.6 - VDD(RF,LF) - 2.2 V Input voltages Vi(D1-D4,S5,S6) input signal voltage range (with respect to VCOM) VI(CM) common mode DC reference input voltage range LF diode amplifiers ZCONV conversion impedance central diodes, D1 to D4 41 47 54 k GSE = HIGH 11.0 12.7 15.0 k satellite diodes, S5 and S6 GSE = LOW 80 92 104 k GSE = HIGH 21.0 24.5 28 k central diodes, O1 to O4 0 - 12 µA satellite diodes, O5 and O6 0 - 6 µA -0.2 - VDD(RF,LF) - 2.1 V central diodes - 1.8 - pF satellite diodes Io(LF) GSE = LOW - 1.1 - pF output current range VO(LF) DC output voltage range central and satellite diodes Zi note 1 input impedance 1997 May 16 6 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) SYMBOL IOS PARAMETER channel pair matching CONDITIONS MIN. TZA1015 TZA1015 TYP. MAX. UNIT note 2 central diodes, O1 to O4 - +1 %FS satellite diodes, O5 and O6 -2 - +2 %FS central diodes, D1 to D4 65 90 115 kHz satellite diodes, S5 and S6 B(-3 dB) -1 65 90 115 kHz -3 dB bandwidth RF amplifier VO(RFP) DC output level RFP GSE = LOW or HIGH; Vi(D1 to D4) = 0 V 0.3 0.5 0.7 V VO(RFN) DC output level RFN GSE = LOW or HIGH; Vi(D1 to D4) = 0 V 2.7 3.1 3.4 V Vo(RF)(dif) differential RF output signal (Vo(RFP) - Vo(RFN) note 3 - 2 - V Vo(RF) single-sided RF output signal note 3 - 1 - V Zo(RF) RF output impedance - 25 - GRF RF path gain GSE = LOW 10 11 12 dB GSE = HIGH 22 23 24 dB f < 5 MHz; RFBWS = LOW - - 2.0 ns f < 10 MHz; RFBWS = open-circuit - - 1.0 ns f < 25 MHz; - RFBWS = HIGH - 0.4 ns td(f)(RF) BRF(-3 dB) RF flatness delay -3 dB bandwidth (RF signal) note 4 GSE = LOW or HIGH; note 5 GSE = LOW or HIGH RFBWS = LOW 10 12.5 MHz 15 20 25 MHz RFBWS = HIGH 37 1997 May 16 7.5 RFBWS = open-circuit 50 63 MHz 7 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) SYMBOL PARAMETER CONDITIONS MIN. TZA1015 TZA1015 TYP. MAX. UNIT RFBWS = LOW - 1.0 - mV RFBWS = open-circuit - 1.4 - mV RFBWS = HIGH - 2.1 - mV GSE = LOW or HIGH; note 6 1.3 1.4 1.5 V GSE = LOW 16 17.5 19 dB GSE = HIGH 26.5 28 29.5 dB 220 300 380 kHz - - 100 mA N-type -10% 0.150 +10% V P-type - VDD(RF,LF) - 0.150 - Vn(in-band)(rms) in-band noise (RMS value) VO(FTC) fast track count DC output level GFTC fast track count gain f = 100 kHz; note 7 BFTC(-3 dB) fast track count -3 dB bandwidth Laser supply (APC) Io(LASER)(min) minimum laser output current Vi(mon) monitor input voltage V Io(LASER) = 100 mA - - VDD(LASER) - 1.2 V laser switch-on time - 3 - ms monitor input current - - 100 nA Vo(LASER) laser output voltage range tsw(on)(LASER) Ii(mon) Control inputs Zi(pd) pull-down input impedance (pin GSE) - 150 - k Zi(pu) pull-up input impedance (pin PWRON) - 150 - k VIL LOW-level input voltage pins GSE and PWRON -0.2 - V DD(RF,LF) -3.3 V pins GARF and RFBWS -0.2 - +0.5 V pins GSE and PWRON V DD(RF,LF) -1.4 - VDD(RF,LF) + 0.2 V pins GARF and RFBWS VDD(RF,LF) - 0.5 - VDD(RF,LF) + 0.2 V VIH 1997 May 16 HIGH-level input voltage 8 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) SYMBOL PARAMETER CONDITIONS MIN. TZA1015 TZA1015 TYP. MAX. UNIT IIL LOW-level input current (pins GARF and RFBWS) - - 70 µA IIH HIGH-level input current (pins GARF and RFBWS) - - -80 µA V DD(RF,LF) -2 +10% V - mA Vref voltage source VO DC output voltage IO -10% output current range sink - source - - -3 mA DC output impedance ZO 1.5 - - 30 Notes 1. The output current can be increased but does not match the default input range of the servo system. 2. Matching defined in % of FS output per channel pairs (O1 - O2), (O3 - O4), (S5 - S6), at 1/3 and 2/3 of full output scale. 3. Vo(RFP) = Vo(RF); Vo(RFN) = -Vo(RF). V o ( RFP ) 4. Gain is defined as: G RF = 20 × log -V i ( LF ) V o ( RFN ) = 20 × log -V i ( LF ) V i(Di) All inputs assumed to be equal: V i(LF) = - , where i = 1 to 4 and D means diode. 4 5. See Figs 3, 4 and 5. 6. Voltage is based on 2 PN junctions and is temperature dependent. V o ( FTC ) 7. Gain is defined as: G FTC = 20 × log -( V i ( S5 ) ­ V i ( S6 ) ) 1997 May 16 9 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) MGK357 MGK357 12 handbook, halfpage G (dB) TZA1015 TZA1015 MGK358 MGK358 12 9.00 td handbook, halfpage G (dB) (ns) 14.5 td (ns) (1) 14.0 8.75 11 8.50 10 13.5 9 8.25 9 13.0 8 8.00 8 12.5 11 (1) (2) 10 (2) 7 10-1 (1) Gain. (2) Delay. 1 10 f (MHz) 7 10-1 7.75 102 - 360 Definition of delay: delay = -f (1) Gain. (2) Delay. Fig.3 Gain and delay for 50 MHz bandwidth. MGK359 MGK359 12 handbook, halfpage (2) G (dB) 23 21 (1) 10 19 9 17 8 15 7 10-1 (1) Gain. (2) Delay. 1 10 f (MHz) 13 102 - 360 Definition of delay: delay = -f Fig.5 Gain and delay for 10 MHz bandwidth. 1997 May 16 10 f (MHz) 12.0 102 - 360 Definition of delay: delay = -f Fig.4 Gain and delay for 20 MHz bandwidth. td (ns) 11 1 10 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) Table 1 TZA1015 TZA1015 Control inputs, conversion impedances and gain settings PIN GSE PIN GARF NOMINAL LF V/I CONVERSION (CENTRAL DIODES) NOMINAL LF V/I CONVERSION (SATELLITE DIODES) NOMINAL RF GAIN (dB) NOMINAL FTC GAIN (dB) LOW LOW 47 k 92 k 7 14 LOW open-circuit 47 k 92 k 11 18 LOW HIGH 47 k 92 k 15 22 HIGH LOW 12.7 k 24.5 k 19 24 HIGH open-circuit 12.7 k 24.5 k 23 28 HIGH HIGH 12.7 k 24.5 k 27 32 Table 2 Control inputs and RF bandwidth PIN RFBWS RF AMPLIFIER BANDWIDTH SPREAD (4 SIGMA) LOW 10 MHz ±25% open-circuit 20 MHz ±25% HIGH 50 MHz ±25% 1997 May 16 11 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) TZA1015 TZA1015 APPLICATION INFORMATION The circuits shown in Figs 6 and 7 are applications for the TZA1015 TZA1015 (HDALAS) with the SAA7370A SAA7370A (CD7) or the SAA7348 SAA7348 (ACE). from microprocessor(1) handbook, full pagewidth RFBWS LD LD VDD(LASER) VDD(L) 100 nF CFIL 1 nF MON MON D1 D2 OPIC D1 D2 D3 D3 D4 D4 S5 S5 S6 S6 VDD(RF, LF) 100 nF Vref VDD(LF) VCOM Vref from microprocessor(1) 1 28 2 27 3 26 4 25 5 24 6 23 7 22 TZA1015 TZA1015 8 (HDALAS) 21 9 20 10 19 11 18 12 17 13 16 14 15 100 nF GARF 100 nF ISLICE Iref GSE RFN RFP 1 nF 1 nF R2(2) 22 k R1(2) 22 k C1(2) GND HFREF 18 15 17 VDD(RF, LF) VDD(RF) HFIN 14 100 nF O1 D1 O2 D2 O3 D3 O4 D4 O5 R1 O6 R2 PWRON LDON 3 SAA7370A SAA7370A 4 (CD7) 5 7 8 9 64 6 FTC 6 × 220 pF VRL 100 nF to microprocessor(3) (1) Pins RFBWS, GARF and GSE can be microprocessor controlled but can also be fixed or switched by any other means. (2) For recommended values per speed see Table 3. (3) The FTC output is available for optional processing. Fig.6 Application diagram with SAA7370A SAA7370A (CD7). 1997 May 16 12 MGK360 MGK360 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) from microprocessor(1) handbook, full pagewidth RFBWS LD MON D1 D2 OPIC from microprocessor(1) 28 1 LD 2 VDD(LASER) VDD(L) 3 100 nF CFIL 4 1 nF MON 5 D1 D2 D3 D3 D4 D4 S5 S5 S6 S6 VDD(RF, LF) 100 nF Vref VDD(LF) VCOM Vref TZA1015 TZA1015 27 26 25 24 23 6 22 7 TZA1015 TZA1015 8 9 (HDALAS) 21 20 10 19 11 18 12 17 13 16 14 15 100 nF GARF GSE RFN RFP C1(2) 68 nF R1(2) GND HFIN VDD(RF, LF) VDD(RF) 100 nF O1 D1 O2 D2 O3 D3 O4 D4 O5 R1 O6 R2 PWRON FTC 9 LDON 22 nF FTCH 47 k 15 SAA7348 SAA7348 16 (ACE) 17 20 21 22 100 24 5 pF FTCL 25 MGK361 MGK361 (1) Pins RFBWS, GARF and GSE can be microprocessor controlled but can also be fixed or switched by any other means. (2) For recommended values per speed see Table 4. Fig.7 Application diagram with SAA7348 SAA7348 (ACE). 1997 May 16 13 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) Table 3 Recommended values of components per speed for application diagram of Fig.6 N C1 1× 47 pF 2× 47 pF 4× 22 pF 8× 10× Recommended values of components per speed for application diagram of Fig.7 R2 N C1 R1 1 k 1 k 1× 100 pF 1 k 470 470 2× 47 pF 1 k 470 470 4× 22 pF 1 k 10 pF 470 470 8× 22 pF 470 8.2 pF 470 470 16× 10 pF 470 18× 1997 May 16 R1 Table 4 TZA1015 TZA1015 6.8 pF 470 14 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) TZA1015 TZA1015 PACKAGE OUTLINE SO28: plastic small outline package; 28 leads; body width 7.5 mm SOT136-1 D E A X c y HE v M A Z 15 28 Q A2 A (A 3) A1 pin 1 index Lp L 1 14 e bp 0 detail X w M 5 10 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y mm 2.65 0.30 0.10 2.45 2.25 0.25 0.49 0.36 0.32 0.23 18.1 17.7 7.6 7.4 1.27 10.65 10.00 1.4 1.1 0.4 1.1 1.0 0.25 0.25 0.1 0.9 0.4 0.012 0.096 0.004 0.089 0.01 0.019 0.013 0.014 0.009 0.71 0.69 0.30 0.29 0.050 0.419 0.043 0.055 0.394 0.016 0.043 0.039 0.01 0.01 0.004 0.035 0.016 inches 0.10 Z (1) Note 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. REFERENCES OUTLINE VERSION IEC JEDEC SOT136-1 075E06 075E06 MS-013AE MS-013AE 1997 May 16 EIAJ EUROPEAN PROJECTION ISSUE DATE 95-01-24 97-05-22 15 o 8 0o Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) TZA1015 TZA1015 SOLDERING Wave soldering Introduction Wave soldering techniques can be used for all SO packages if the following conditions are observed: There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used. · A double-wave (a turbulent wave with high upward pressure followed by a smooth laminar wave) soldering technique should be used. · The longitudinal axis of the package footprint must be parallel to the solder flow. · The package footprint must incorporate solder thieves at the downstream end. This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our "IC Package Databook" (order code 9398 652 90011). During placement and before soldering, the package must be fixed with a droplet of adhesive. The adhesive can be applied by screen printing, pin transfer or syringe dispensing. The package can be soldered after the adhesive is cured. Reflow soldering Reflow soldering techniques are suitable for all SO packages. Maximum permissible solder temperature is 260 °C, and maximum duration of package immersion in solder is 10 seconds, if cooled to less than 150 °C within 6 seconds. Typical dwell time is 4 seconds at 250 °C. Reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. Several techniques exist for reflowing; for example, thermal conduction by heated belt. Dwell times vary between 50 and 300 seconds depending on heating method. Typical reflow temperatures range from 215 to 250 °C. Repairing soldered joints Fix the component by first soldering two diagonallyopposite end leads. Use only a low voltage soldering iron (less than 24 V) applied to the flat part of the lead. Contact time must be limited to 10 seconds at up to 300 °C. When using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 °C. Preheating is necessary to dry the paste and evaporate the binding agent. Preheating duration: 45 minutes at 45 °C. 1997 May 16 16 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) TZA1015 TZA1015 DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product specification This data sheet contains final product specifications. Limiting values Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. 1997 May 16 17 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) NOTES 1997 May 16 18 TZA1015 TZA1015 Philips Semiconductors Preliminary specification Data amplifier and laser supply circuit for CD and read-only optical systems (HDALAS) NOTES 1997 May 16 19 TZA1015 TZA1015 Philips Semiconductors ­ a worldwide company Argentina: see South America Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113, Tel. +61 2 9805 4455, Fax. +61 2 9805 4466 Austria: Computerstr. 6, A-1101 WIEN, P.O. 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No. 5, 80640 GÜLTEPE/ISTANBUL, Tel. +90 212 279 2770, Fax. +90 212 282 6707 Ukraine: PHILIPS UKRAINE, 4 Patrice Lumumba str., Building B, Floor 7, 252042 KIEV, Tel. +380 44 264 2776, Fax. +380 44 268 0461 United Kingdom: Philips Semiconductors Ltd., 276 Bath Road, Hayes, MIDDLESEX UB3 5BX, Tel. +44 181 730 5000, Fax. +44 181 754 8421 United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409, Tel. +1 800 234 7381 Uruguay: see South America Vietnam: see Singapore Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD, Tel. +381 11 625 344, Fax.+381 11 635 777 For all other countries apply to: Philips Semiconductors, Marketing & Sales Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825 Internet: http://www.semiconductors.philips.com © Philips Electronics N.V. 1997 SCA54 SCA54 All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Printed in The Netherlands 547027/00/01/pp20 Date of release: 1997 May 16 Document order number: 9397 750 01978