BA5810FP/FM
Optical disc ICs
CD/CD-ROM Driver Integrated Circuit
BA5810FP/FM
The BA5810FP is 5-channel driver designed for CD, CD-ROM, and other optical disc-related applications. The
BA5810FP comprises a 4-channel BTL driver and a 1-channel reversible-motor drive. A stepping motor can be
driven using 2 of the 4 channels. For optimum performance, PreVCC and power supply for power transistors
operate independently (channels 1 − 2 and channels 3 − 4, respectively). In addition, a power-saving pin
delivers power-saving functions.
zApplications
CD, CD-ROM, and other optical disc-related applications.
zFeatures
1) HSOP28 power package for small footprint set
2) Internal thermal shut-down circuit
3) Wide BTL driver output dynamic range  4.0V (typical) at PREVCC=12V and PWEVCC=5V
4) Two-channel input stage
5) Voltage-control pin for adjusting loading outputs
zAbsolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Limits
Unit
Power supply voltage
PREVCC, POWVCC
13.5∗
1.7∗
V
Pd
2.2∗
W
Power
dissipation
BA5810FP
BA5810FM
Operating temperature
Topr
−40~+85
C
Storage temperature
Tstg
−55~+150
C
∗When mounted on a 70mmx70mmx1.6mm glass epoxy board with copper foil coverage of less than 3%.
Reduced by 13.6mW/°C(BA5810FP) and 17.6mW/°C(BA5870FM) for each increase in Ta of 1°C over 25°C
zGuaranteed operating ranges
Parameter
Operating Power
supply voltage
Symbol
Min.
Typ.
Max.
Unit
PREVCC
4.3
−
13.2
V
POWVCC
4.3
−
PREVCC
V
1/8
BA5810FP/FM
Optical disc ICs
zBlock diagram
27
26
25
24
23
22
21
20
19
18
17
7.5k
+
−
− +
10k
10k
LEVEL
SHIFT
− +
LEVEL
SHIFT
+
−
16k
7.5k
10k
10k
10k
−16k
+
−16k
+
LOADING PRE
FWD REV
15
+
−
7.5k
16
10k 10k
+
−
CH1~ POWVCC34
CH4 (CH3, CH4)
MUTE
+
−
+
−
10k
+
−
28
+
−
7.5k
LEVEL
SHIFT
− +
LEVEL
SHIFT
− +
16k
10k
10k
10k
POWVCC12
(CH1, CH2)
7
8
10k
1
2
3
4
5
6
9
10
11
+
−
PREVCC
(PRE, LOADING)
+
−
POWER
SAVE
+
−
×3
+
−
10k
10k 10k
12
13
10k
14
zPin description
Pin No.
Pin Name
Pin No.
Pin Name
1
FWD
Loading driver FWD.input
15
VO4 (+)
Channel 4 positive output
2
REV
Loading driver REV.input
16
VO4 (−)
Channel 4 negative output
3
LDCONT
Loading driver output voltage control
17
VO3 (+)
Channel 3 positive output
4
PS
Power-save control
18
VO3 (−)
Channel 3 negative output
5
IN1
Driver channel 1 input
19
GND
6
IN2
Driver channel 2 input
20
POWVCC34
7
PREVCC
Pre-stage, loading power stage power
21
MUTE
8
POWVCC12
Pow VCC for channel 1& channel 2
22
OPOUT3
Channel 3 pre-amp. output
9
VOL (−)
Loading driver voltage negative output
23
OPIN3 (−)
Channel 3 pre-amp. inverted input
10
VOL (+)
Loading driver voltage positive output
24
OPIN3 (+)
Channel 3 pre-amp. input
11
VO2 (−)
Channel 2 negative output
25
OPOUT4
Channel 4 pre-amp. output
12
VO2 (+)
Channel 2 positive output
26
OPIN4 (−)
Channel 4 pre-amp. inverted input
13
VO1 (−)
Channel 1 negative output
27
OPIN4 (+)
Channel 4 pre-amp. input
14
VO1 (+)
Channel 1 positive output
28
BIAS
Function
Function
Ground
Pow VCC for channel 3 & channel 4
Mute control
Bias input
Note: Positive output and negative output are the polarities with respect to the input
(For example, pin 14 goes HIGH when polarity of pin 5 is HIGH.)
2/8
BA5810FP/FM
Optical disc ICs
zI/O circuit
Positive output pin 12,14,15,17
28pin
Bias
BTL driver output
10k
40k
100k
10k
Negative output pin 11,13,16,18
23,26pin
1,2,21pin
25k
50k
5,6,22,25pin
9pin
For CH 3,
and CH 4 only
Loading driver output
10k
10pin
180
180
10k
10k
15k
4pin
50k
50k
Loading output-voltage control
Power-save control
Op-amp. output & BTL driver input
24,27pin
Mute-loading driver input
10k
15k
3pin
20k
10k
3/8
BA5810FP/FM
Optical disc ICs
zElectrical characteristics
(unless otherwise noted, Ta=25°C, PREVCC=12V, POWVCC12, 34=5V, BIAS=1.65V, RL=8Ω)
Parameter
Symbol
Min.
Typ.
Circuit current
ICC
−
Power-save circut current
IPS
−
Power-save on-voltage
VPSON
Power-save off-voltage
Conditions
Measurement
Circuit
Max.
Unit
22.9
34
mA
No load
Fig.1
1.65
2.8
mA
PS="L"
Fig.1
−
−
0.5
V
Fig.1
VPSOFF
2.0
−
−
V
Fig.1
Output offset voltage
VOO
−50
0
50
mV
Fig.2
Maximum output amplitude
VOM
3.6
4.0
−
V
Fig.2
Voltage gain
GVC
17.2
19.0
20.8
dB
Fig.2
Mute on-voltage
VMTON
−
−
0.5
V
Fig.1
Mute off-voltage
<BTL driver>
VMTOFF
1.5
−
−
V
Mute input current
IMUTE
−
180
270
µA
VMUTE=5V
Fig.1
Bias input current
IBIAS
−
75
120
µA
VBIAS=2.5V
Fig.1
Fig.1
<Pre. Op-amp. (channel 3 and 4)>
VICM
0.5
−
10.0
V
Fig.2
VOFOP
−6
0
6
mV
Fig.2
IBOP
−
−
300
nA
Fig.2
Output high level voltage
VOHOP
11.5
−
−
V
BIAS=6V
Fig.2
Output low level voltage
VOLOP
−
−
0.5
V
BIAS=6V
Fig.2
Output drive current sink
ISIN
1
−
−
mA
Output drive current source
ISOU
1
−
−
mA
Slew rate
SROP
−
1
−
V/µs
In-phase input range
Input offset voltage
Input bias current
Fig.2
Fig.2
100KHz rectangular wave, 2Vp-p output
Fig.2
<Loading driver>
Output saturation voltage 1
Output saturation voltage
1 F/R diff.
Output saturation voltage 2
Output high voltage
variable gain
VSAT1
0.7
1.1
1.5
V
−
−
0.1
V
Sum of upper side + lower side (IL=200mA)
F/R difference of the output
saturation voltage 1
Fig.2
∆VSAT1
VSAT2
1.0
1.55
2.2
V
Sum of upper side + lower side IL=500mA
Fig.2
GVH
7.4
9.2
11
dB
High side output v.s. input (LDCNT)
Fig.2
Fig.2
<Loading logic input>
Input high level voltage
VIHLD
1.5
−
VCC
V
Fig.1
Input low level voltage
VILLD
−0.3
−
0.5
V
Fig.1
Input high level current
IIHLD
−
180
270
µA
VFWD=VREV=5V
Fig.1
(Not designed for radiation resistance)
4/8
BA5810FP/FM
Optical disc ICs
zMeasurement circuit
MUTE
A
OPAMP UNIT
POWVCC34
A
OPAMP UNIT
AM28
A
AM21
28
27
26
25
24
23
22
21
BTL UNIT
20
19
18
17
+
−
− +
10k
10k
LEVEL
SHIFT
− +
LEVEL
SHIFT
+
−
16k
7.5k
10k
10k
10k
−16k
+
−16k
+
LOADING PRE
FWD REV
15
+
−
7.5k
16
10k 10k
+
−
CH1~ POWVCC34
CH4 (CH3, CH4)
MUTE
+
−
+
−
10k
7.5k
BTL UNIT
AM20
+
−
BIAS
+
−
7.5k
LEVEL
SHIFT
− +
LEVEL
SHIFT
− +
16k
10k
10k
10k
7
8
A
A
10k
1
2
3
VM1
4
5
6
VM2
VM5
9
10
+
−
POWVCC12
(CH1, CH2)
+
−
PREVCC
(PRE, LOADING)
+
−
POWER
SAVE
×3
+
−
10k
10k 10k
11
12
10k
13
14
VM6
AM2
V
V
A AM1 A
FWD
V
REV
VCNT
A
LDCNT
V
A
V
A
AM4
AM5
AM6
AM7
PS
IN1
IN2
PREVCC
LOADING
UNIT
BTL UNIT
BTL UNIT
AM8
POWVCC12
Fig.1
+
−
VO (1,2,3,4)
VOF
V
SW1
V
A
1M
B
VNFR
V
C
10k
OPOUT
(VM4,7,22,25)
V
A
B
VBIN
VO+
(VM12,14,17,15)
V
V
V
10k
VO−
(VM11,13,18,16)
SW5
1M
50
SW3
B
SW2
B
A
VBOP
C
RL
A
C
SW4
A
B
C
A
B
A
VIN
ILK+
A
ILK−
PREVCC
VLK+
OP AMP UNIT
VLK−
BTL UNIT
VOLD
VOL(+)
V
V
V
VOL(−)
SW6
A
A
B
A
C
B
RL
A
ILF
ILK+
ILK−
VLK+
VLK−
LOADING UNIT
C
ILR
Fig.2
5/8
BA5810FP/FM
Optical disc ICs
zCircuit operation
1)
2)
3)
4)
5)
6)
The BA5810FP has an internal thermal shut-down circuit. When the chip temperature reaches 175°C
(typical), the output current is muted. The driver block resumes operation at or below 150°C (typical).
To mute output current, open the MUTE pin (pin 21) or reduce the MUTE pin voltage to less than 0.5V. For
normal operation, the MUTE pin voltage should be pulled up more than 1.5V.
Output is muted when the voltage of the BIAS pin (pin 28) falls below 0.7V (typical). For normal operation,
the BIAS pin voltage should exceed 1.1V.
The internal circuit turns off when the power-supply voltage falls below 3.8V (typical). The internal circuit
resumes normal operation after the power-supply voltage rises to 4.0V (typical).
The driver is muted when the power supply voltage is decreased or a thermal shut-down occurs. Muting
also occurs for all BTL drivers, except the loading driver, when the bias voltage falls or mute-on is selected.
In each case, the pre-stage operational amplifiers are not muted. When drivers are muted, the internal
bias voltage (POWVCC / 2V) is available at the BTL driver-output pin.
Loading driver logical inputs truth table:
FWD
(1pin)
REV
(2pin)
VOL (+)
(10pin)
VOL (−)
(9pin)
L
L
OPEN
OPEN
Open mode
L
H
L
H
Reverse mode
H
L
H
L
Forward mode
H
H
L
L
Brake mode
Function
The input circuits of pin 1 and pin 2 are designed to prevent transistors (Tr) of driver outputs from being
turned on simultaneously. For added reliability, use an intermediate open mode of 11 msec or longer
when the motor’s input direction is reversed.
The “H” state voltage of the output voltage (VOL+, VOL-) can be varied using the Loading Driver
Output Voltage Control pin (pin 3). The input to pin 3 (typically 9.2dB) is tripled and output as “H” state
voltage. The saturation voltage of the lower power transistor is output as the “L” state voltage.
6/8
BA5810FP/FM
Optical disc ICs
zApplication example
FOCUS IN
BIAS
TRACKING IN
"L"→MUTE
MUTE
TRACKING
FOCUS
POWVCC
=5V
27
26
25
24
23
22
21
20
19
18
17
10k
10k
LEVEL
SHIFT
− +
LEVEL
SHIFT
+
−
16k
7.5k
+
−
− +
−16k
+
−16k
+
LOADING PRE
FWD REV
10k
+
−
7.5k
15
10k
10k
7.5k
16
10k 10k
+
−
CH1~ POWVCC34
CH4 (CH3, CH4)
MUTE
+
−
+
−
10k
+
−
28
+
−
7.5k
LEVEL
SHIFT
− +
LEVEL
SHIFT
− +
16k
10k
10k
10k
POWVCC12
(CH1, CH2)
7
8
PREVCC
10k
1
2
3
4
5
6
POWVCC
PREVCC
=12V
PS
=5V
9
10
LOADING
INPUT
12
13
10k
14
M
LOADING
LOADING
VOLTAGE
CONTROL
10k 10k
11
+
−
(PRE, LOADING)
+
−
POWER
SAVE
+
−
×3
+
−
10k
STM
STEPPING
INPUT
Fig.3
zOperation note
(1) Connect a by-pass capacitor (approximately 0.1µF) between the bases of the power supply pins of this IC.
(2) Connect radiation fins to an external ground (they are connected to ground within the package).
(3) When PREVCC, POWVCC12, and POWVCC34 operate independently, the voltages of POWVCC12 and
POWVCC34 should not exceed the PREVCC voltage value.
(4) Do not apply voltages below the substrate voltage (GND) to the pins. If the output voltage of each driver is
expected to fall below the IC substrate voltage (GND), allow for back-EMF from the loads.
(5) Do not short circuit between output pins and POWVCC, between output pins and GND, and between output
pins. Be sure to orient the IC properly when mounting it on a substrate. Otherwise, you can destroy the IC
and, in some instance, release fumes.
7/8
BA5810FP/FM
Optical disc ICs
4
PREVCC=12V
POWVCC=5V
BIAS=1.65V
RL:200Ω
3
2
1
PREVCC=12V
10 POWVCC=5V
BIAS=1.65V
20Ω
12Ω
8Ω
OUTPUT VOLTAGE : VO (V)
Mounted on:
70mmx70mm glass epoxy board,
1.6 mm in thickness
with copper foil coverage
of less than 3%.
3
OUTPUT VOLTAGE : VO (V)
POWER DISSIPATION : Pd (W)
zElectrical characteristics curves
2
1
0
−1
−2
−3
RL=
When FWD=H, REV=L
0
When FWD=L, REV=H
RL=
−10
−4
0
0
25
50
75
100
125
150
−0.6
−0.4
−0.2
0
0.2
0.4
0.6
INPUT VOLTAGE : VIN (V)
AMBIENT TEMPERATURE : Ta (°C)
Fig.5 Driver I/O characteristics (CH1)
Fig.4 Thermal derating curve
20Ω
12Ω
8Ω
1
2
3
8Ω
12Ω
20Ω
4
OUTPUT CONTROL VOLTAGE : VOLD (V)
Fig.6 Loading I/O characteristics
zExternal dimensions (Unit: mm)
18.5 +
− 0.2
15
5.15 +
− 0.1
0.11
2.2 +
− 0.1
1
0.8
0.25 +
− 0.1
7.5 +
− 0.2
9.9 +
− 0.3
28
14
0.35 +
− 0.1
0.3Min.
0.15
HSOP28 / HSOP-M28
8/8