UTC UA9392 LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO. LTD
1
QW-R109-010,A
4-CHANNEL BTL DRIVE
FOR CD PLAYERS
DESCRIPTION
The UTC UA9392 is a 4-channel BTL driver for CD plsyer
motors and actuators. It has an internal primary filter, and
can be directly connected (without attached components)
to the servo PWM output of all drivers other than the
spindle driver.
FEATURES
*PWM input is filtered by the internal primary filter,
eliminating the need for attached resistors and capacitors,
thereby helping reduce the number of components.
Resistor and capacitor time constant can be changed with
attached components.
*Internal mute circuit.
*Thermal shutdown circuit is contained.
*Level-shift circuit is contained.
APPLICATIONS
CD players, CD-ROM drives.
HSOP-28
PIN CONFIGURATION
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CH
1
O
U
T
F
CH
1
O
U
T
R
RC I
N
1
CH
1
R
I
N
CH
1
F
I
N
VR
EF I
N
VREF
O
U
T
GN
D
CH2
F
I
N
CH2
R
I
N
RC
I
N
2
CH2
O
U
T
R
CH
2
O
UT
F
GN
D
MU
T
E
CH3
O
U
T
F
CH
3
O
UT
R
RC
I
N
3
CH
3
R
I
N
Vc
c
CH
3
F
I
N
Vc
c
VB
I
N
VS
I
N
VBI
N
CH
4
O
UT
R
CH4
O
U
T
F
GN
D
UTC UA9392 LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO. LTD
2
QW-R109-010,A
PIN DESCRIPTIONS
PIN NO.
PIN NAME
DESCRIPTION
1
CH1OUT F
Drive channel 1 forward output
2
CH1OUT R
Drive channel 1 reverse output
3
RC IN1
Connect to attach resistor/capacitor(1)
4
CH1 RIN
Drive channel 1 reverse input
5
CH1 FIN
Drive channel 1 forward input
6
VREF IN
Internal reference amplifier input
7
VREF OUT
Internal reference amplifier output
8
GND
Ground for internal reference and internal power circuit
9
CH2 FIN
Drive channel 2 forward input
10
CH2 RIN
Drive channel 2 reverse input
11
RC IN2
Connect to attach resistor/capacitor(2)
12
CH2OUT R
Drive channel 2 reverse output
13
CH2OUT F
Drive channel 2 forward output
14
GND
Ground for internal reference and internal power circuit
15
MUTE
Drive mute control input
16
CH3OUT F
Drive channel 3 forward output
17
CH3OUT R
Drive channel 3 reverse output
18
RC IN3
Connect to attach resistor/capacitor(3)
19
CH3 RIN
Drive channel 3 reverse input
20
CH3 FIN
Drive channel 3 forward input
21 Vcc
Power
supply
22 Vcc
Power
supply
23
VBIN
Drive channel 4 bias input*
24
VSIN
Drive channel 4 input
25
VBIN
Drive channel 4 bias input*
26
CH4OUT R
Drive channel 4 reverse output
27
CH4OUT F
Drive channel 4 forward output
28
GND
Ground for internal reference and internal power circuit
*Pin23 and Pin25 are shorted internally.
UTC UA9392 LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO. LTD
3
QW-R109-010,A
BLOCK DIAGRAM
CH1OUTF
1
CH1OUTR
2
3
RCIN1
CH1RIN
4
5
CH1FIN
VREFIN
6
VREFOUT
7
GND
8
CH2FIN
CH2RIN
RCIN2
CH2OUTR
CH2OUTF
GND
9
10
11
12
13
14
F
R
REV
FWD
INTER
FACE
+ -
REV
FWD
INTER
FACE
F
R
DRIVE
MUTE
THERMAL
SHUTDOWN
CIRCUIT
LEVEL
SHIFT
190k
+ -
100k
28
27
26
25
24
23
22
21
20
19
18
17
16
15 MUTE
CH2OUTF
CH3OUTR
RCIN3
CH3RIN
CH3FIN
VCC
VCC
VBIN
VSIN
VBIN
CH4OUTR
CH4OUTF
GND
INTER
FACE
FWD
REV
F
R
25k
25k
UTC UA9392 LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO. LTD
4
QW-R109-010,A
ABSOLUTE MAXIMUM RATINGS
(Ta=25)
PARAMETER SYMBOL
RATINGS
UNIT
Power supply voltage
Vcc
16
V
Power dissipation
Pd
1.6 *
1
W
Operating temperature
Topr
-30 ~ +80
Storage temperature
Tstg
-55 ~ +150
*1: Reduce by 13.6mW for each increase in Ta of 1 over 25,When mounted on a 50 * 50 * 1.0 mm phenol paper
PCB.
RECOMMENDED OPEATING CONDITIONS
(Ta=25)
PARAMETER SYMBOL
RATING
UNIT
Supply voltage
Vcc
5 ~ 10 *
2
V
*2 Set the power supply voltage according to power dissipation.
ELECTRICAL CHARACTERISTICS
(Ta=25,Vcc=8V,f=1kHz,RL=8, unless otherwise specified)
ITEMS SYMBOL
TEST
CONDITIONS
MIN
TYP.
MAX
UNIT
Quiescent current
I
Q
No
load
5
12 18 mA
Bias pin voltage
V
BIAS
3.4
3.68 4.00 V
Bias pin voltage reguration
V
BIAS
1mA source, sink
-30
30
mV
Mute-off voltage
V
MOFF
2.0
V
Mute-on voltage
V
MON
0.5
V
<Drive(other than spindle)>
Input high level voltage
V
IH
2.4
V
Input low level voltage
V
IL
0.5 V
Input high level current
IH
V
IN
=5V 170
310
450
A
Input low level current
IL
V
IN
=0V -10
0
A
Output voltage,offset
V
OO
(Same for spindle)
-30
30
mV
Output high level voltage
V
OHD
F
IN
=5V, R
IN
=0V 4.90
5.40
V
Output low level voltage
V
OLD
F
IN
=0V, R
IN
=5V
1.50
2.00
V
Constant current
Ic
ONST
14
22
30
A
Internal integral capacitance
C
24
pF
Current pulse rise time 1
tr
At startup
0.08
1
s
Current pulse fall time 2
tf
At shutdown
0.55
1
s
Current pulse time differential
tr-f
-160
160
s
Driver linearity
LIN
V
IN
=V
REF
0.5,1,1.5*
1
90 100
110 %
Ripple rejection
RR
V
IN
=100mVrms,100Hz
70
dB
<Spindle driver>
Input bias current
I
B
10 300 nA
Synchronous input voltage
V
ICM
1.6
6.4
V
Max.output voltage high
V
OHD
4.90 5.40
V
Max.output voltage low
V
OLD
1.50
2.00
V
Voltage gain
G
VC
8.0 10.5
13
dB
Slew
rate
SR
2
V/s
Ripple rejection
RR
S
V
IN
=100mVrms,
100Hz
70 dB
*1: if Vo=V01 when V
IN
=V
REF
0.5V,Vo=V02 when V
IN
=V
REF
1.0V,and Vo=V03 when V
IN
=V
REF
1.5V,then
L
IN
=(V03 * V02)/(V02 * V01) *100%.
UTC UA9392 LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO. LTD
5
QW-R109-010,A
CIRCUIT OPERATION
(1) Fig. 2 shows the inputs from the digital servo IC for CH1-CH3 drivers(all drivers except the spindle).SW1 is on
when the forward input signal(HIGH level, over 2.4V) is present,SW2 I on when the reverse input signal is
present (Fig. 1) The constant current (I
1
) at this time enters the RC and generates an integral waveform based
on the duty of the input waveform. The BTL is output from BUF1 and BUF2 (Fig.3).
INTER-
FACE
F
R
SW1
SW2
I
1
I
2
24pF
100K
BUF1
BUF2
OUT R
OUT F
Fig. 1
To maintain the HIGH level with forward (or reverse) in-put, the DC voltage generated at point A is:
I
1
R 2.5V (reverse : - 2.5V)
5V
0V
0V
F (R)
R (F)
INPUT
Fig. 2
This is the voltage generated relative V
REF
. The setting is such that a voltage differential of 5V is generated
be-tween output pins. The time constant is:
RC = 2.4sec
This can be increased by inserting a capacitor between point A (pin3,11and 18) and V
REF
The constant current
(Iconst) given in the electrical characteristics refers to I
1
and I
2
in Fig.1.
(2) CH4 driver (spindle driver) Pins 23 and 25 are shorted inside the IC.Bias amplitudes are the primarytype of
inputs assumed.
F R
SW2
SW1
L L
OFF
OFF
L H
OFF
ON
H L ON
OFF
H H
OFF
OFF
H: 2.4V Max.
L: 0.5V Min.
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