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TDA1301 데이터시트(Datasheet) 1 Page - NXP Semiconductors

부품명 TDA1301
상세내용  Digital servo processor DSIC2
PDF  14 Pages
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제조사  PHILIPS [NXP Semiconductors]
홈페이지  http://www.nxp.com
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 1 page
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March 1994
2
Philips Semiconductors
Product specification
Digital servo processor (DSIC2)
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
Note
1. fsys = 4.2336 MHz; VRL = 0 V; VRH = 2.5 V (externally applied).
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
VDDD
digital supply voltage
3.0
5.5
V
VDDA
analog supply voltage
3.0
5.5
V
IDDD
digital supply current
5
mA
IDDA
analog supply current
5
mA
IDDD(q)
digital quiescent supply current
10
µA
Ii(cd)
central diode input currents (D1 to D4)
note 1
15.8
µA
Ii(sd)
satellite diode input currents (R1 and R2)
note 1
7.9
µA
Ptot
total power dissipation
50
mW
Tamb
operating ambient temperature
−40
+85
°C




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