TDA1300T データシートの表示（PDF） - Philips Electronics

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TDA1300T

Photodetector amplifiers and laser supplies

Philips Electronics 

Philips Semiconductors

Photodetector amplifiers and laser

supplies

Preliminary specification

TDA1300T; TDA1300TT

FEATURES

• Six input buffer amplifiers with low-pass filtering with

virtually no offset

• HF data amplifier with a high or low gain mode

• Two built-in equalizers for single or double speed mode

ensuring high playability in both modes

• Full automatic laser control including stabilization and

an on/off switch and containing a separate supply VDDL

for power reduction

• Applicable with N-sub laser with N-sub or P-sub monitor

diode

• Adjustable laser bandwidth and laser switch-on current

slope

• Protection circuit preventing laser damage due to supply

voltage dip

• Optimized interconnect between pick-up detector and

TDA1301

• Wide supply voltage range

• Wide temperature range

• Low power consumption.

GENERAL DESCRIPTION

The TDA1300 is an integrated data amplifier and laser

supply for three beam pick-up detectors applied in a wide

range of mechanisms for Compact Disc (CD) and read

only optical systems. It offers 6 amplifiers which amplify

and filter the focus and radial diode signals adequately and

provides an equalized RF signal for single or double speed

mode which can be switched by means of the speed

control pin.

The device can handle astigmatic, single Foucault and

double Foucault detectors and is applicable with all N-sub

lasers and N-sub or P-sub monitor diode units.

After a single initial adjustment the circuit keeps control

over the laser diode current resulting in a constant light

output power independent of ageing. The chip is mounted

in a small SO24 or TSSOP24 package enabling mounting

close to the laser pick-up unit on the sledge.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

VDD

supply voltage

Diode current amplifiers (n = 1 to 6)

Gd(n)

IO(d)

B

diode current gain

diode offset current

3 dB bandwidth

RFE amplifier (built-in equalizer)

td(eq)

td(f)

equalization delay

flatness delay

Laser supply

Io(L)

output current

CONDITIONS

Ii(d) = 1.67 µA

fi = 0.3 MHz

double speed

VDDL = 3 V

MIN. TYP. MAX. UNIT

3

−

5.5 V

1.43 1.55 1.67

−

−

100 nA

50 −

−

kHz

−

320 −

ns

−

5

−

ns

−

−

−100 mA

ORDERING INFORMATION

TYPE

NUMBER

TDA1300T

TDA1300TT

NAME

SO24

TSSOP24

PACKAGE

DESCRIPTION

plastic small outline package; 24 leads; body width 7.5 mm

plastic thin shrink small outline package; 24 leads; body width 4.4 mm

VERSION

SOT137-1

SOT355-1

1997 Jul 15

2

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