Philips EXP 411 Service Manual page 22

V DD
13
11
CDRW
5
DIN
(1)
4
V GAP
MON
6
V DD(L)
GND
7851 :TZA1024T/N1
SYMBOL PIN
LD 1 current output to laser diode
V 2 laser supply voltage
DD(L)
CFIL 3 external filter capacitor
MON 4 laser monitor diode input
DIN 5 central diode input
GND 6 ground
PWRON 7 power-on select input
CMFB 8 common mode feedback voltage
input
RFFB 9 external RF feedback resistor
RFEQO 10 RF amplifier output
CDRW 11 gain select input for CD-A/V, CD-R/W
EQSEL 12 equalizer/speed select input
(n = 1, 2 or 4)
V 13 supply voltage
DD
RGADJ 14 external laser supply gain adjust
resistor
7851 :TZA1024T/N1
V DD
1×
4×
2×
TZA1024
V/I
V/I
V DD
2
DESCRIPTION
3-8
12
EQSEL
9
RFFB
10
RFEQO
8
CMFB
250
kHz
1
LD
14
RGADJ
3
CFIL
7
PWRON
7851 :TZA1024T/N1
LD
1
V DD(L)
2
CFIL 3
MON 4 TZA1024
DIN 5
6
GND
7
PWRON
7350 : BA3574BFS
14
RGADJ
13 V DD
12
EQSEL
11 CDRW
10
RFEQO
9 RFFB
8
CMFB