Philips tda1300t DATASHEETS
INTEGRATED CIRCUITS
DATA SH EET
TDA1300T
Photodetector amplifiers and laser
supply
Product specification
Supersedes data of 1995 Sep 27
File under Integrated Circuits, IC01
1995 Nov 16
Philips Semiconductors Product specification
Photodetector amplifiers and laser
supply
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 V
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.
DDL
TDA1300T
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 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
laser, 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 package enabling mounting close to the
laser pick-up unit on the sledge.
QUICK REFERENCE DATA
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
V
DD
supply voltage 3 − 5.5 V
Diode current amplifiers 6 times
G
dn
I
os(d)
B 3 dB bandwidth I
amplification 1.43 1.55 1.67
offset current −−100 nA
= 1.67 µA50−−kHz
i(d)
RFE amplifier (built-in equalizer)
t
d(eq)
t
d(f)
equalization delay time fi= 0.3 MHz − 320 − ns
flatness delay time double-speed − 5 − ns
Laser supply
I
o(l)
output current V
=3V −−−100 mA
DDL
ORDERING INFORMATION
PACKAGE
TYPE NUMBER
NAME DESCRIPTION VERSION
TDA1300T SO24 plastic small outline package; 24 leads; body width 7.5 mm SOT137-1
1995 Nov 16 2
Philips Semiconductors Product specification
Photodetector amplifiers and laser supply TDA1300T
SCHEMATIC DIAGRAM
to
motor
spindle
left
right
clk
(SAA7345)
DECODER
PLL
AMP
POWER
SUBCODE
DECODER
MOTOR
CONTROL
KEYBORD
DISPLAY
PROCESSOR
DISPLAY
end_stop_switch
MBG473
DDD
V
DDA
V
NRST
DDD
V
DDA
V
DD
V
G SP RF(E)
OTD
CLO
D1
O1
I1
XTLI
D2
O2
DIODE
I2
XTLO
DIGITAL SERVO IC
D3
D4
O3
O4
AND
LASER
AMPLIFIER
I3
I4
XTLR
R1
O5
SUPPLY
I5
TS1
TDA1301
R2
V
O6
TDA1300
I6
RL
TS2
V
MI
RH
SICL
LDON
LDON
LO
SIDA
O ADJ GND
DDL
V
SILD
1 nF
clk
SSD
RA FO SL V
SSK
V
DD
V
2.5 to 5 V
DD
V
G SP RF(E)
O1
I1
focus
O2
I2
actuator
DIODE
O3
AMPLIFIER
I3
radial
actuator
sledge
(TDA7072/7073)
POWER AMPLIFIER
O4
O5
O6
AND
LASER
SUPPLY
TDA1300
I4
I5
I6
MI
LDON
LO
O ADJ GND
DDL
V
1 nF
ADJp
R
2.5 to 5 V
handbook, full pagewidth
Fig.1 Schematic diagram for CD player.
photo-
configuration
N-sub monitor
1995 Nov 16 3
diodes
mon
ADJn
R
la
photo-
diodes
configuration
P-sub monitor
mon
la
Philips Semiconductors Product specification
Photodetector amplifiers and laser supply TDA1300T
BLOCK DIAGRAM
handbook, full pagewidth
I6
23 2
in
I6
6
1.5x
Id6
out
O6
HG
LS
I5
20
in
I5
24
I4
22
I3
19
I2
21
I1
11
12
5
I4
in
4
I3
in
3
I2
in
2
I1
in
1
I
csin
1.5x
1.5x
1.5x
1.5x
1.5x
95, 120, 134 or
240 kΩ
I/V
−4
Id5
Id4
Id3
Id2
Id1
TDA1300T
out
out
out
out
out
5
O5
1
O4
3
O3
6
O2
4
O1
9
RFE
1995 Nov 16 4
ADJ
V
DD
GND
10
14
I
(P-sub)
ADJ
(N-sub) or
V
mon
17
MI
I
(P-sub)
mon
18
15
SUPPLY
V
gap
OTA
CL
ILO
ON/OFF
13
MBG474
(N-sub) or
V
DD
RF
8
V
DDL
16
LO
7
LDON
Fig.2 Block diagram.
Philips Semiconductors Product specification
Photodetector amplifiers and laser supply TDA1300T
PINNING
SYMBOL PIN DESCRIPTION
O4 1 output of current amplifier 4
O6 2 output of current amplifier 6
O3 3 output of current amplifier 3
O1 4 output of current amplifier 1
O5 5 output of current amplifier 5
O2 6 output of current amplifier 2
LDON 7 control pin for switching the laser
on and off
V
DDL
8 laser supply voltage
RFE 9 equalized output voltage of sum
signal of amplifiers 1 to 4
RF 10 unequalized output
HG 11 control pin for gain switch
LS 12 control pin for speed switch
CL 13 external capacitor
ADJ 14 if connected via resistor to GND
P-sub monitor. If connected to
N-sub monitor
V
DD
GND 15 zero supply connection,
substrate connection
LO 16 output for the laser, current output
MI 17 input for the monitor diode of the
laser
V
DD
18 positive supply connection
I2 19 photo detector input 2 (central)
I5 20 photo detector input 5 (satellite)
I1 21 photo detector input 1 (central)
I3 22 photo detector input 3 (central)
I6 23 photo detector input 6 (satellite)
I4 24 photo detector input 4 (central)
handbook, halfpage
1
O4
2
O6
3
O3
4
O1
5
O5
6
O2
TDA1300T
7
LDON
8
V
DDL
9
RFE
10
RF
11
HG
12
LS
MBG472
Fig.3 Pin configuration.
24
I4
23
I6
22
I3
21
I1
20
I5
19
I2
18
V
DD
17
MI
16
LO
15
GND
14
ADJ
13
CL
1995 Nov 16 5
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