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TDA1301 View Datasheet(PDF) - Philips Electronics

Part Name
Description
View to exact match
TDA1301
Philips
Philips Electronics Philips
TDA1301 Datasheet PDF : 14 Pages
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Philips Semiconductors
Digital servo processor (DSIC2)
Product specification
TDA1301T
FEATURES
The DSIC2 realizes the following servo functions:
Diode signal preprocessing
Focus servo loop
Radial servo loop
Sledge motor servo loop
Three-line serial interface via the microcontroller
The other features include:
Full digital signal processing
Low power consumption, down to 30 mW
Low voltage supply 3 to 5.5 V
Integrated analog-to-digital converters and digital servo
loop filters
Double speed possible
Easy application
– Single supply voltage
– Small number of external components; only
6 decoupling capacitors
– Flexible system oscillator circuitry
– Usable for single/double Foucault and astigmatic
focus
– Full automatic radial error signal initialization offset
control and level initialization for track position
indicator
– No external adjustments required; no component
ageing
– Wide range of adjustable servo characteristics
– Simple 3-line serial command interface
– 28-pin SO package
– Great flexibility towards different CD mechanisms
– Full and transparent application information
High robustness/shock insensitivity
– Sophisticated track-loss (TL) detection mechanism
– Fast focus restart procedure
– Extended radial error signal
– Adjustable radial shock detector
– Defect drop-out detector
Fully automatic jump procedure for radial servo
Automatic focus start-up procedure and built-in FOK
(Focus OK)
Fast radial jump or access procedure
Self-operational servo-control without continuous
communication via the microcontroller
Direct communication to photodiode optics; no external
preprocessing.
GENERAL DESCRIPTION
The TDA1301T is a fully digital servo processor which has
been designed to provide all servo functions, except the
spindle motor control, in two-stage three-spot compact
disc systems. The device offers a high degree of
integration, combined with the low additional cost of
external components. The servo characteristics have a
wide range of adjustment via a three-line serial interface.
This offers an enormous flexibility with respect to
applications for different CD mechanisms. The circuit is
optimized for low-power low-voltage applications.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
VDDD
VDDA
IDDD
IDDA
IDDD(q)
Ii(cd)
Ii(sd)
Ptot
Tamb
digital supply voltage
analog supply voltage
digital supply current
analog supply current
digital quiescent supply current
central diode input currents (D1 to D4)
satellite diode input currents (R1 and R2)
total power dissipation
operating ambient temperature
note 1
note 1
Note
1. fsys = 4.2336 MHz; VRL = 0 V; VRH = 2.5 V (externally applied).
MIN.
3.0
3.0
40
TYP.
5
5
50
MAX.
5.5
5.5
10
15.8
7.9
+85
UNIT
V
V
mA
mA
µA
µA
µA
mW
°C
March 1994
2
 

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