Harman Kardon HD750, Техническое руководство

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AN8814SB
4-channel driver IC for optical disk drive
■
Overview
The AN8814SB is a BTL system 4-channel
driver and is encapsulated in the SMD package
which excels in heat radiation characteristic.
■
Features
•
Wide output dynamic range regardless of refer-
ence voltage of the system
•
Driver I/O gain setting is possible with an addi-
tional external resistor
•
3.3 V supply voltage is available due to an exter-
nal PNP-tr.
•
Additional OP-amp. built-in
■
Applications
•
MD, CD/CD-ROM drive
•
DVD/DVD-ROM drive
HSOP042-P-0400
Unit: mm
1 7 8 14
(1.315)
0.65±0.20
28 22 21
(4.8)
(6.4) (1.2)
(5.15)
18.4±0.2
8.3±0.2
2.7±0.2
0.1±0.1
10.93±0.30
15
0.35
+0.10
–0.05
0.30
+0.10 –0.05
0.8
Seating plane
0
°
to 10
°
■
Block Diagram
19
PGND1
20
PV
CC1
23
IN1
18
VO1
+
24
PC1
17
VO1
−
25
IN2
16
VO2
+
26
PC2
15
VO2
−
27
IN3
14
VO3
+
13
VO3
−
28
IN4
12
VO4
+
10
PGND2
11
VO4
−
9
PV
CC2
21
8
6
7
V
CC
4
Fin
GND
5
V
CC
22
V
REF
1
2
PV
CC
1
2
PV
CC
1
2
3.3 V
reg.
Direction
detector
Direction
detector
Direction
detector
Direction
detector
V
CC
detector
Thermal
protection
circuit
HD750
27