ICs for Compact Disc/CD-ROM Player
AN8814SB
4-channel driver IC for optical disk drive
■ Overview
Unit: mm
18.4±0.2
(5.15)
(4.8)
The AN8814SB is a BTL system 4-channel
driver and is encapsulated in the SMD package
which excels in heat radiation characteristic.
28
22
21
15
+0.10
• Wide output dynamic range regardless of reference voltage of the system
• Driver I/O gain setting is possible with an additional external resistor
• 3.3 V supply voltage is available due to an external PNP-tr.
• Additional OP-amp. built-in
0.30–0.05
8.3±0.2
10.93±0.30
(1.315)
■ Features
0° to 10°
1
7
8
14
0.8
■ Applications
0.35+0.10
–0.05
(6.4)
(1.2)
Seating plane
0.1±0.1
2.7±0.2
0.65±0.20
HSOP042-P-0400
• MD, CD/CD-ROM drive
• DVD/DVD-ROM drive
PVCC2
9
11 VO4−
12 VO4+
13 VO3−
14 VO3+
15 VO2−
16 VO2+
17 VO1−
18 VO1+
20 PV
CC1
■ Block Diagram
21 1
PVCC
2
1 PV
CC
2
6
VCC
7 V
CC
detector
Thermal
protection Fin
GND
circuit
4
Direction
detector
Direction
detector
Direction
detector
1
10
PGND2
28
IN4
27
IN3
26
PC2
25
IN2
24
PC1
IN1
23
3.3 V
reg.
19
2
22 V
REF
PGND1
VCC
Direction
detector
5
8
1
AN8814SB
ICs for Compact Disc/CD-ROM Player
■ Pin Descriptions
Pin No.
Description
Pin No.
Description
1
Base control pin for an external transistor
15
Motor driver-2 reverse rotation output pin
of 3.3 V regulator
16
Motor driver-2 forward rotation output pin
2
3.3 V regulator output monitor pin
17
Motor driver-1 reverse rotation output pin
3
N.C. pin
18
Motor driver-1 forward rotation output pin
4
Op-amp. output pin
19
Driver GND pin 1
5
Op-amp. inverted input pin
20
Driver power supply pin 1
6
Op-amp. non-inverted input pin
21
1/2 PVCC output pin 1
7
Power supply pin
22
VREF input pin
8
1/2 PVCC output pin 2
23
Motor driver-1 input pin
9
Driver power supply pin 2
24
PC (power cut) input pin 1
10
Driver GND pin 2
25
Motor driver-2 input pin
11
Motor driver-4 reverse rotation output pin
26
PC (power cut) input pin 2
12
Motor driver-4 forward rotation output pin
27
Motor driver-3 input pin
13
Motor driver-3 reverse rotation output pin
28
Motor driver-4 input pin
14
Motor driver-3 forward rotation output pin
Fin
GND pin
■ Absolute Maximum Ratings
Parameter
Supply voltage
Supply current
Power dissipation
*2
Operating ambient temperature
Storage temperature
*1
*1
Symbol
Rating
Unit
SVCC
17
V
ICC
mA
PD
542
mW
Topr
−30 to +85
°C
Tstg
−55 to +150
°C
Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C.
*2: Ta = 85°C.
Referring to "■ Application Circuit Example", following the allowable power dissipation characteristic curve of "■
Application Notes".
■ Recommended Operating Range
Parameter
Supply voltage
2
Symbol
Range
Unit
SVCC , PVCC1 , PVCC2
4.0 to 14
V
ICs for Compact Disc/CD-ROM Player
AN8814SB
■ Electrical Characteristics at Ta = 25°C
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Current consumption with no load
ITOT
VCC = 5 V
5
10
15
mA
Input offset voltage
VIOF
VCC = 5 V, VPC1 = VPC2 = 0 V,
RL1 to RL4 = 8 kΩ, R1 to R4 = 10 kΩ
−10
0
10
mV
Output offset voltage
VOOF
VCC = 5 V, VPC1 = VPC2 = 0 V,
RL1 to RL4 = 8 kΩ, R1 to R4 = 10 kΩ
−50
0
50
mV
G
VCC = 5 V, VPC1 = VPC2 = 0 V,
RL1 to RL4 = 8 kΩ, R1 to R4 = 10 kΩ
18.0
20.0
22.0
dB
Maximum output amplitude (+)
VL+
VCC = 5 V, VPC1 = VPC2 = 0 V,
RL1 to RL4 = 8 kΩ, R1 to R4 = 10 kΩ
2.4
2.7
V
Maximum output amplitude (−)
VL−
VCC = 5 V, VPC1 = VPC2 = 0 V,
RL1 to RL4 = 8 kΩ, R1 to R4 = 10 kΩ
−2.7
−2.4
V
High-level threshold voltage
VPCH1
VCC = 5 V, RL1 = 8 Ω, R1 = 10 kΩ
2.0
V
Low-level threshold voltage
VPCL1
VCC = 5 V, RL1 = 8 Ω, R1 = 10 kΩ
0.5
V
High-level threshold voltage
VPCH2
VCC = 5 V, RL2 = 8 Ω, R2 = 10 kΩ
2.0
V
Low-level threshold voltage
VPCL2
VCC = 5 V, RL2 = 8 Ω, R2 = 10 kΩ
0.5
V
VRST
IIN = 10 µA, R1 to R 4 = 10 kΩ
2.1
2.3
2.5
V
Output voltage
VREG
VCC = 5 V
3.1
3.3
3.5
V
Output load fluctuation
∆VR
VCC = 5 V
−50
0
50
mV
Supply voltage fluctuation
∆VV
VCC = 5 V/12 V
−5
0
5
mV
Input offset voltage
VOF
VCC = 5 V
−10
0
10
mV
Input bias current
IBOP
VCC = 5 V
150
500
nA
High-level output voltage
VOH
VCC = 5 V
4.0
V
Low-level output voltage
VOL
VCC = 5 V
1.5
V
Output driving current sink
ISIN
VCC = 5 V
2.0
mA
Output driving current source
ISOU
VCC = 5 V
2.0
mA
Motor driver 1 to motor driver 4
Gain
Motor driver 1
Motor driver 2
Reset circuit
Reset operation release supply
voltage
3.3 V regulator
Op-amp.
3
AN8814SB
ICs for Compact Disc/CD-ROM Player
■ Electrical Characteristics at Ta = 25°C (continued)
• Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
Thermal protection circuit
Operating temperature
equilibrium value
TTHD
180
°C
Operating temperature
hysteresis width
∆TTHD
45
°C
■ Usage Notes
1. Avoid the short-circuits between output and VCC , and between output pin and GND.
Otherwise, the IC is likely to break down or emit smoke.
2. An appropriate prior study should be done for use of dip soldering.
■ Application Notes
• PD Ta curves of HSOP042-P-0400
PD T a
2.500
2.240
Power dissipation PD (W)
2.000
Mounted on standard board
(glass epoxy:
75 mm × 75 mm × t1.6 mm)
Rth(j-a) = 55.8°C/W
1.500
1.042
1.000
Independent IC
without a heat sink
Rth(j-a) = 119.9°C/W
0.500
0.000
0
25
50
75
100
Ambient temperature Ta (°C)
4
125
150
ICs for Compact Disc/CD-ROM Player
AN8814SB
■ Application Circuit Example
RL1
V1
22
Fin
21
20
19
18
7
Fin
8
9
10
11
15
23
6
14
24
5
16
25
4
13
26
3
17
27
2
SVCC
12
28
R1
V2
R3
V3
RL2
PVCC1
1
R4
V4
R2
VREF
PVCC2
RL4
RL3
When the AN8814SB is use, take into account the following cautions and follow the power dissipation characteristic curve.
1. Load current IP1 flowing into load RL1, RL2 is supplied through pin 20.
| V18 −V17 |
| V16 −V15 |
IP1 =
+
RL1
RL2
2. Load current IP2 flowing into load RL3, RL4 is supplied through pin 9.
| V14 −V13 |
| V12 −V11 |
IP2 =
+
RL3
RL4
3. Dissipation increase (∆PD) inside the IC (power output stage) caused by loads RL1, RL2, RL3 and RL4 is as follows:
| V18 −V17 |
| V16 −V15 |
∆PD = (PVCC1 − | V18 −V17 |) ×
+ (PVCC1 − | V16 − V15 |) +
RL1
RL2
| V14 −V13 |
| V12 −V11 |
= (PVCC2 − | V14 −V13 |) ×
+ (PVCC2 − | V12 − V11 |) ×
RL3
RL4
4. Dissipation increase (∆PS) inside the IC (signal block supplied from pin 7) caused by loads RL1, RL2, RL3 and RL4
comes roughly as follows:
V
V
∆PS = 3 × { 1 × (2 × SVCC + | V18 −V17 |) + 2 × (2 × SVCC + | V16 −V15 |)
R1
R2
V3
V4
+
× (2 × SVCC + | V14 −V13 |) +
× (2 × SVCC + | V12 −V11 |)}
R3
R4
5. Dissipation increase in a driver operating mode is ∆PD + ∆PS .
6. Allowable power dissipation without load (PD1) can be found as follows:
PD1 = SVCC × ISVCC + PVCC1 × IPVCC1 + PVCC2 × IPVCC2
7. Allowable power dissipation in a load operating mode (PD) comes roughly as follows:
PD = PD1 + ∆PD + ∆PS
5