TZA1025T View Datasheet(PDF) - Philips Electronics
Part Name
Description
Manufacturer
TZA1025T
Philips Electronics
TZA1025T Datasheet PDF : 16 Pages
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Philips Semiconductors
Data amplifier and laser supply circuit for CD
audio and video optical systems (ADALASLC)
Product specification
TZA1025
APPLICATION INFORMATION
The application for the TZA1025 (ADALASLC) with the SAA7325 (CD10LC) using a coupling capacitor of 3.3 nF is
shown in Fig.6.
handbook, full pagewidth
VDD(LASER)
VDD
from
microprocessor(2)
OPU
LD
MON
VCOM
LD
1
100 nF
VDD(L)
2
10 nF CFIL
3
RGADJ RRGADJ(1)
14
VDD
13
GND
12
100 nF
VDD
MON 4 (ATDZAAL1A0S2L5C)11 CDRW
DIN
RFEQO
5
10
1 kΩ 3.3 nF
GND
6
PWRON
7
RFFB
9
CMFB
8
10 kΩ(3)
47 pF
22
kΩ
HFIN
HFREF
ISLICE
100 nF
100 nF
LDON
VRIN
SAA7325
(CD10LC)
C2(4)
R2 (4×)
D1
D1
D2
D2
D3
D3
D4
D4
S1
S1
S2
S2
LF FILTER
6 × 220 pF
MBK903
(1) See equation (3) to calculate the value of this resistor.
(2) Pin CDRW can be controlled by the CD10LC or a microprocessor but can also be fixed or switched by any other means.
(3) The 10 kΩ feedback resistor between pins 9 and 10 is a fixed value.
(4) The high-pass filter (AC-coupling) is placed at the input of the preamplifier. The −3 dB point (f = 10 kHz) is at R-----2-----(---Ω-----)----4×-----C-----2----(---F----)-
Fig.6 Application diagram with SAA7325 (CD10LC) using a coupling capacitor.
1998 Oct 30
10
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