tza1025 NXP Semiconductors, tza1025 Datasheet - Page 10

• Manufacturer Part Number: tza1025
• Description: Data Amplifier And Laser Supply Circuit For Cd Audio And Video Optical Systems Adalaslc
• Manufacturer: NXP Semiconductors

Philips Semiconductors
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.
1998 Oct 30
handbook, full pagewidth
Data amplifier and laser supply circuit for CD
audio and video optical systems (ADALASLC)
(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 k 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
OPU
LD
MON
VCOM
D1
D2
D3
D4
S1
S2
Fig.6 Application diagram with SAA7325 (CD10LC) using a coupling capacitor.
V DD
100 nF
V DD(LASER)
C2
R2 (4 )
10 nF
(4)
PWRON
V DD(L)
MON
CFIL
GND
DIN
LD
1
2
3
4
5
6
7
(ADALASLC)
TZA1025
LF FILTER
14
13
12
11
10
10
9
8
RGADJ
V DD
GND
CDRW
RFEQO
RFFB
CMFB
10 k
R RGADJ
(3)
(1)
1 k
V DD
100 nF
100 nF
3.3 nF
47 pF
microprocessor
k
22
R2
-------------------------------------------- -
6
from
220 pF
100 nF
HFREF
ISLICE
LDON
4
VRIN
HFIN
C2 F
(2)
D1
D2
D3
D4
S1
S2
Product specification
SAA7325
TZA1025
(CD10LC)
MBK903