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KA3014
Spindle + 4-CH Motor Driver
Features
* * * * * * * * * * * * Built-in power save circuit Built-in current limit circuit Built-in thermal shutdown circuit (TSD) Built-in hall bias Built-in FG signal output circuit Built-in rotational direction detecting circuit Built-in protection circuit for reverse rotation Built-in short brake circuit Built-in variable-regulator Built-in 4-CH balanced transformerless (BTL) driver Built-in BTL mute circuit (CH1/2, CH3 and CH4) Corresponds to 3.3V DSP
Description
The KA3014 is a monolithic integrated circuit suitable for a 4-ch motor driver which drives the tracking actuator, focus actuator, sled motor, loading motor and 3-phase BLDC spindle motor of the MDP/CAR-MD/CAR-NAVIGATION system.
48-QFPH-1414
Target Application
* * * * Mini disk player Digital video disk player Car mini disk player Car navigation system
Ordering Information
Device KA3014 Package 48-QFPH-1414 Operating Temp. -35C ~ +85C
Rev. 1.0.2 May. 2000.
(c)2000 Fairchild Semiconductor International
1
KA3014
Pin Assignments
BTLSNGD
MUTE12
MUTE3 38
48
47
46
45
44
43
42
41
BIAS
H3 +
H2 +
H1 +
H3 -
H2 -
H1 -
FIN (GND)
40
39
37
VH
MUTE4
AVM4
1
36
DO4 + DO4 - AVM3
FG ECR
2
35
3
34
EC
4
33
DO3 + DO3 - BTLPGND2
VCC2 PC1 (GND)
5
32
6
31
FIN
KA3014
7 30
SIGGND
VM CS1
8
29
9
28
SS
10 11
27
DIR SB
26
12
25
13 PWRGND
14 A3
15 A2
16 A1
17 RESX
18 VREGX (GND) FIN
19 REGOX
20 VCC1
21 AVM12
22 DI4
23 DI3
24 DI2
2
(GND) FIN BTLPGND1 DO2 + DO2 - DO1 + DO1 - DI1
KA3014
Pin Definitions
Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Pin Name VH FG ECR EC VCC2 PC1 SIGGND VM CS1 S/S DIR SB PWRGND A3 A2 A1 RESX VREGX REGOX VCC1 AVM12 DI4 DI3 DI2 DI1 DO1- DO1+ DO2- DO2+ BTLPGND1 BTLPGND2 I/O I O I I I I O I O O O I O O I I I I O O O O - Hall bias FG signal output Torque control reference Torque control signal Supply voltage Phase compensation capacitor Signal ground Motor supply voltage Current sensor Start/stop 3-phase rotational direction output Short brake Power ground 3-phase output 3 3-phase output 2 3-phase output 1 Variable regulator reset Variable regulator Variable regulator output Supply voltage BTL CH-1, 2 motor supply voltage BTL drive input 4 BTL drive input 3 BTL drive input 2 BTL drive input 1 BTL drive 1 output (-) BTL drive 1 output (+) BTL drive 2 output (-) BTL drive 2 output (+) BTL power ground 1 BTL power ground 2 Pin Function Descrition
3
KA3014
Pin Definitions (Continued)
Pin Number 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Pin Name DO3- DO3+ AVM3 DO4- DO4+ MUTE4 MUTE3 MUTE12 AVM4 BIAS BTLSGND H1- H1+ H2- H2+ H3- H3+ I/O O O - O O I I I - - - I I I I I I Pin Function Descrition BTL drive 3 output (-) BTL drive 3 output (+) BTL CH3 motor supply voltage BTL drive 4 output (-) BTL drive 4 output (+) BTL drive mute CH 4 BTL drive mute CH 3 BTL drive mute CH 1, 2 BTL CH 4 motor supply voltage BTL bias voltage BTL drive signal ground Hall1(-) input Hall1(+) input Hall2(-) input Hall2(+) input Hall3(-) input Hall3(+) input
4
KA3014
Internal Block Diagram
SIGGND
VCC2
VM
FG 2
EC
12 Short vrake PWRGND 13
11
10
9
8
7
6
5
4 +-
3
VH 1 Hall bias 48 H3+ 47 H3- 46 H2+ 45 H2- 44 H1+ 43 H1- FIN (GND) 42 BTLSGND 41 BIAS 10k 40 AVM4 39 MUTE12 MUTE MUTE MUTE 38 MUTE3 37 MUTE4 36 DO4 +
SB
Power Save
SS
FIN (GND)
A3 14
Absolute Values FG Comparator Detector 2P - Hall amp matrix + + - 10k + - + - + - x2 x2 x2 x2 x2 2P 2P 2P 33 DO3 + 34 AVM3 31 BTLPGND2 FIN (GND) 32 DO3 - 2P 35
A2 15
+-
A1 16 Lower Distributor
Direction Detector
RESX 17
VREGX 18 FIN (GND)
+-
REGOX 19
VCC1 20 + AVM12 21 + - - + -
10k
+
-
DI4 22
x2 x2
x2
DI3 23
2P
2P
2P
DI2 24 25 DI1 26 DO1 - 27 DO1 + 28 DO2 - 29 DO2 + 30 BTLPGND1
2P
10k
Upper Distributor
Direction select
TSD
ECR
PC1
CS1
DIR
5
DO4 -
KA3014
Equivalent Circuits
Hall bias FG signal output
10k 1 5 50 2
50k
Torque control reference & signal
Phase compensation capacitor
2k 3 4 50 1k 6
2k
Current detector
Start / Stop
2.7k 9 10
50
50k 30k
120
6
KA3014
Equivalent Circuits (Continued)
3-phase rotational direction output Short brake
25k 50 11 50 17 80k 1k
3-phase output
Variable regulator reset
60k
14 15 16
50 12
50k 30k
Variable regulator
Variable regulator output
18 50 19 50
7
KA3014
Equivalent Circuits (Continued)
BTL drive input BTL drive output
26 27 22 23 24 25 20k 50 100 10k 28 29 32 33 35 36
BTL drive mute
BTL bias voltage
37 38 39
50
50k 41 30k 50 200
Hall input
43 45 47 50 1k 1k 50
44 46 48
8
KA3014
Absolute Maximum Ratings ( Ta=25C)
Parameter Supply voltage (BTL signal) Supply voltage (Spindle signal) Supply voltage (Spindle motor) Supply voltage (BTL motor) Power dissipation Operating temperature Storage temperature range Maximum output current (Spindle part) Maximum output current (BTL part) Symbol VCC1MAX VCC2MAX VMMAX VMBTLMAX PD TOPR TSTG IOMAXS IOMAXB Value 15 7 15 15 3.0
note
Unit V V V V W C C A A
-35 ~ +85 -55 ~ +150 1.3 1
Notes: 1. When mounted on 70mm x 70mm x 1.6mm PCB (Phenolic resin material) 2. Power dissipation is reduced 24mW / C for using above Ta=25C 3. Do not exceed Pd and SOA (Safe Operating Area)
Pd (mW) 3,000 2,000
1,000 0
0
25
50
75
100
125
150
175
Ambient temperature, Ta [C]
Recommended Operating Conditions ( Ta=25C)
Parameter Operating supply voltage (BTL signal) Operating supply voltage (Spindle signal) Operating supply voltage (Spindle motor) Operating supply voltage (BTL motor) Symbol VCC1 VCC2 VM VMBTL Min. 4.5 4.5 4.5 4.5 Typ. Max. 13.2 5.5 13.2 5.5 Unit V V V V
9
KA3014
Electrical Charateristics
(SPINDLE PART, Ta=25C, VCC2=5V, VM=12V) Parameter Circuit current 1 Circuit current 2 START / STOP On voltage range Off voltage range HALL BIAS Hall bias voltage HALL AMP Hall bias current In-phase in voltage range Minimum in level TORQUE CONTROL In voltage range Offset voltage (-) Offset voltage (+) In current In/output gain FG FG output voltage (H) FG output voltage (L) Input voltage range OUTPUT BLOCK Saturation voltage (upper TR) Saturation voltage (lower TR) Torque limit current DIRECTION DETECTOR Dir output voltage (H) Dir output voltage (L) SHORT BRAKE On voltage range Off voltage range VSBON VSBOFF - - 2.5 0 - - VCC 0.5 V V VDIRH VDIRL IFG=-10A IFG=10A 3.0 - - - VCC 0.5 V V VOH VOL ITL IO= -300mA IO=300mA RCS=0.5 - - 560 0.9 0.2 700 1.6 0.6 840 V V mA VFGH VFHL VFGR IFG= -10A IFG=10A Hn+, Hn- input D-range 3.0 - 1.5 - - - VCC 0.5 4.0 V V V EC ECOFF- ECOFF+ ECIN GEC ECR=2.5V ECR=2.5V EC=ECR=2.5V ECR=2.5V, RCS=0.5 - 0.5 -80 20 -5 0.41 - -50 50 -1 0.51 3.3 -20 80 - 0.61 V mV mV A A/V IHA VHAR VINH - - - - 1.5 60 1 - - 5 4.0 - A V mVpp VHB IHB=20mA - 1.2 1.8 V VPSON VPSOFF L-H circuit on H-L circuit off 2.5 - - - - 0.5 V V Symbol ICC 1 ICC2 Condition Power save=0V Power save=5V Min. - - Typ. 0 8.0 Max. 0.1 - Units mA mA
10
KA3014
Electrical Charateristics (Continued)
(BTL DRIVE PART, Ta=25C, VCC1=12V, VMBTL=12V, RL=24) Parameter Quiescent circuit current Output offset voltage Maximum output Amplitude voltage Voltage gain Ripple rejection ratio Slew rate Mute off voltage Mute on voltage VARIABLE-REGULATOR Regulator output range Load regulation Line regulation Regulator output voltage 1 Regulator output voltage 2 VREG VR1 VCC VREG1 VREG2 IL=100mA IL=0 200mA IL=200mA, VCC=6V 9V IL=100mA IL=100mA 2.0 -40 -20 4.75 3.135 - 0 0 5.0 3.3 5.25 10 30 5.25 3.465 V mV mV V V Symbol ICC VOO VOM GVC RR SR VMOFF VMON Condition - - - VIN=0.1VRMS, 1kHz VIN=0.1VRMS, 120kHz 120Hz, 2Vpp - - Min. - -30 9.5 10.5 - - - 2.5 Typ. 9 - 10.5 12.0 60 1.0 - - Max. 12 30 - 13.5 - - 0.5 - Units mA mV V dB dB V/s V V
BTL DRIVE PART (Ta=25C, VCC1=12V, VMBTL=12V, RL=24)
Calculation of Gain & Torque Limit Current
VM IO VM - VS Output Current sense + CS1 (Pin 9)
RS Current / Voltage Convertor - Vin EC ECR + - Gm Absolute Values + + + + Vmax - VM Max. output current limiting H1 Driver R1 -
Negative Feedback loop U V W IO
Power Transistors
Commutation Distributor
H2
H3
0.255 is GM times R1 and it is a fixed value within IC.
0.255 Gain = -------------RS
Vmax (see above block diagram) is set to 350mV.
Vmax 350 [ mV ] Itl [ mA ] = --------------- = ----------------------RS RS
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KA3014
Application Information
1. MUTE FUNCTION * Mute control voltage condition When using the mute function, the applied control voltage condition is as follows. Mute on voltage Mute off voltage 2.5[V] above Open or 0.5[V] below Mute function operation Normal operation
* Individual channel mute function These pins are used for individual channel mute operation. - When the mute pins (pin 37, 38 and 39) are open or the voltages at the mute pins are below 0.5[V], the mute circuit is stopped and BTL output circuits operate normally. - When the mute pins (pin 37, 38 and 39) are above 2.5[V], the mute circuits are activated so that the BTL output circuit is muted. - If the junction temperature rises above 175C, then the thermal shutdown (TSD) circuit is activated and all the output circuits (4-CH BTL drivers and 3-phase BLDC driver) are muted.
2. 4-CH BALANCED TRANSFORMERLESS (BTL) DRIVER
VCC
Q1 DRIVE AMP X2 27 29 33 Q3 36 M 26 28 32 35
Q2
DRIVE AMP X2
Q4
GND
41 Vbias Vin Rextern 22 23 24 25 10k + AMP1 - LEVEL SHIFT
* The voltage, Vbias, is the reference voltage given by the external bias voltage of pin 41. * The input signals, Vin, through the pins (pin 22, 23, 24 and 25) are amplified 10k/rextern times and then fed to the level shift. * The level shift produces the current due to the difference between the input signal (Vin) and the arbitrary reference voltage (Vbias). The current produced as + I and - I are fed into the drive buffers. * The drive buffer operates the power TR of the output stage according to the state of the input signal (Vin). * The output stage is the BTL driver, and the motor (or actuator) rotates in forward direction when TR Q1 and TR Q4 are on. On the other hand, if TR Q2 and TR Q3 are on, the motor (or actuator) is rotating in reverse direction. * When the input signal Vin, through the pin (pin 22, 23, 24 and 25) is below the Vbias, then the motor (actuator) moves in forward direction. * When the input signal Vin, through the pin (pin 22, 23, 24 and 25) is above the Vbias, then the motor (actuator) moves in reverse direction. * To change the gain, Modify the external resistor's value (Rextern) 12
KA3014
3. TORQUE & OUTPUT CURRENT CONTROL Torque & output current control
VM
VM RNF
+ Torque sense amp VAMP EC + - + - TSD ECR Current sense amp
-
VRNF IO Driver M
Gain Controller
* By amplifying the voltage difference between EC and ECR from the servo IC, the torque sense amp produces the input (VAMP) for the current sense amp. * The current sense amp produces the input for the gain controller to allow the output current (IO) of the driver to be controlled by the input voltage (VAMP), where the output current (IO) is detected by the sense resistor (RNF) and is converted into VRNF. * In the end, the signals of the servo IC control the velocity of the motor by controlling the output current (IO) of the driver. * When the junction temperature rises up to about 175C, then the output drive circuit will shut down. * The range of the torque control input voltage is as shown below.
VRNF [V] Reverse Forward
Rotation Ec < ECR Forward rotation Stop after detecting reverse rotation
Ecoff-
Ecoff+
Ec > ECR
3 mV 0 ECR-EC[V]
The input range (EC) of the torque sense amp is 0.5V ~ 3.3V.
13
KA3014
4. POWER SAVE FUNCTION *.
Bias block VCC 100k Start Stop 12K 10 30K Q1
* The power save circuit is activated by operating TR Q1. * When the SS (Start / Stop) pin 10 is high (VCC), the TR Q1 is turned on and the bias circuit is enabled. On the other hand, when the SS (Start/Stop) pin 10 is open or low (GND), the TR Q1 is turned off and the bias circuit is disabled. * The power save operation controlled by SS (pin 10) input conditions is as follows; Pin #10 High Opin / Low KA3014 Start Stop
14
KA3014
5. SHORT BRAKE FUNCTION
VM
Drive logic VCC
OFF
MOTOR
14 ON OFF 80K 12 1K Q1 ON 15 16
When the pick-up moves from the inner to the outer spindle of the MD(Mini Disk), the brake function of the reverse voltage is commonly employed to rate the rotational velocity of the spindle motor. However, if the spindle motor rotates rapidly, the brake function of the reverse voltage may produce too much heat at the drive IC. To remove these shortcomings and to enhance efficiency, the short brake function is added to KA3014. When the short brake function is active, all upper power transistors are turned off and the lower power transistors turned on, so as to reduce the rotational velocity of the motor. The short brake operation controlled by SB (pin 12), and the input conditions are as follows.
Pin #12 High Low
Short brake On Off
6. THERMAL SHUTDOWN (TSD) FUNCTION When the junction temperature rises up to 175C, then the output drive circuit shuts down, when the junction temperature falls off to 160C, the output drive circuit operates normally. It has the temperature hysteresis of about 15C.
15
KA3014
7. ROTATING DIRECTION DETECTION FUNCTION
VCC
H2+ H2-
+ - D R 11 Q DIR
11
Rotation EC < ECR Forward Reverse
DIR Low High
CK H3+ H3- + - D-F/F
EC > ECR
* The forward and reverse rotations of the MD are detected by the circuit, as shown in the above table. * The rotational direction of the MD can be learned by the output waveforms of the hall sensor and/or the driver. If the hall sensors turn on in the order, H1H2H3, then this indicates reverse rotation. The output waveforms of the hall sensors are as shown below.
H1
H2
H3
( a)
Inversely, if the hall sensors turn on in the order, H3 H2 H1, then this shows forward rotation. The output waveforms of the hall sensors are as shown below\.
H1
H2
H3
( b)
.
16
KA3014
8. REVERSE ROTATION PREVENTING FUNCTION
EC ECR
+ - Current Sense Amp
H2+ H2-
+ - D CK D-F/F Gain Controller Driver M Q
H3+ H3-
+ -
* The forward and reverse rotation of the motor are detected, as shown in the table below. Consequently at reverse rotation, the D-F/F output Q becomes low and cuts off the output current sense amp, resulting in the stoppage of the gain controller function. * When the MD is rotating in forward direction, EC>ECR is sometimes controlled to retard and/or stop the MD. As the controlling time of EC>ECR gets longer, MD slows down, stops, and then rotates in the reverse direction. To prevent the MD from rotating in the reverse direction, a reverse rotation preventing function is required. Its operational principles are discussed below. Rotation Forward Reverse H2 H L H3 HL HL D-F/F H L Reverse rotation preventer ECECR Brake and stop stop
9. FG OUTPUT FUNCTION The FG output detects the number of rotations of the MD. This is generated from zero-crossing of the hall sensor output waveforms. The FG output circuit is as shown below.
+ H1 -
+ H2 - FG OUTPUT + H3 -
17
KA3014
10. HALL SENSOR CONNECTION External hall sensors are used in series or in parallel connection as shown below.
VCC VCC
HALL 1 HALL 1 HALL 2 HALL 3
HALL 2
HALL 3
1
VH
1
VH
18
KA3014
11. HALL INPUT OUTPUT TIMING CHART The 3-phase hall signal is amplified in the hall amplifiers and sent to the matrix section, where the signal is further amplified. After the signal is converted to a current in the amplitude control circuit, the current is supplied to the output driver, which then provides a motor drive current. The phases of the hall input signal, output voltage, and output current are shown below.
H1 +
H2 +
H3 +
A1 output current
A1 output voltage
A2 output current
A2 output voltage
A3 output current
A3 output voltage
19
KA3014
Typical Performance Characteristics
Icc1(A) 0.015 Vcc vs Icc1
Icc2(A) 10 8 Vcc vs Icc2
0.010 6 4 0.005 2 0.000 0 2 4 6 8 10 12 14 16 18 20 Vcc(V) Icc1(mA) 11.0 10.9 10.8 10.7 10.6 10.5 10.4 10.3 10.2 10.1 10.0 -35 -25 0 25 50 75 90 Temp (C) Vom(V) 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 10.0 4.0 4.5 5.0 5.5 6.0 6.5 7.0 Vcc(V) Input = 0.5V, 4.5V Bias = 2.5V Rin = 10K 11.0 10.5 Vcc1 = 5V Vin = 0.1V rms f = 1KHz Rin=10K 12.5 12.0 11.5 Vcc vs Vom Gvo(dB) 13.0 Vcc vs Gvo (5V) 7.0 -35 -25 0 25 50 Vcc = 12V 7.2 Vcc =12V SS = 5V 7.4 7.6 7.8 Temp vs Icc1 Icc2(mA) 8.0 Temp vs Icc2 0 0 2 4 6 8 10 Vcc(V) SS = 5V
75
90
Temp (C)
Vcc(V)
20
KA3014
Typical Performance Characteristics (Continued)
Gvo(dB) 13.0 12.5 12.0 11.5 11.0 10.5 10.0 9 Vout(V) 15 10 5 0 -5 -10 -15 0 1 2 3 4 5 6 7 8 Vin(V) Voh(V) 1.2 1.0 0.8 300 0.6 200 0.4 0.2 0 50 Io = source current 100 0 150 225 275 325 375 450 Io(mA) 50 100 150 200 250 300 350 400 450 500 Io(mA) Io = source current Io vs Voh Vol(mV) 500 400 Io vs Vol Vcc1 = 12V Bias = 2.5V Rin=10K Vin vs Vout (12V) Vcc1 = 12V Vin = 0.1V rms f = 1KHz Rin=10K 10 11 12 13 14 15 Vcc(V) Vcc1 vs Gvo(12V) Vout(V) 4 3 2 1 0 -1 -2 -3 -4 0 1 2 3 4 5 6 7 8 Vin(V) Vcc1 = 5V Bias = 2.5V Rin=10K Vin vs Vout (5V)
21
KA3014
Typical Performance Characteristics (Continued)
Vrnf(mV) 350 300 250 200 150 100 50 0 0 1 2 3 4 5 Ec(V) Ecr = 2.5V RNF=0.5 Ec vs Vrnf Vrnf(mV) 350 300 250 200 150 100 50 0 0 Ecr = 1.6V RNF=0.5 Ec vs Vrnf
1
2
3
4
5 Ec(V)
22
KA3014
Test Circuits 1
BTL Drive Part
10F 12V
VMUTE
VMUTE 39 MUTE12 38 MUTE3
2.5V 48 H3+ 47 H3- 46 H2+ 45 H2- 44 H1+ 43 H1- 42 BTLSGND 41 BIAS 40 AVM4
VMUTE 37 MUE4 V RL4' 36 SW4 12V 10F RL4 DO4+ DO4- 35 AVM3 34 DO3+ 33 SW3 DO3- 32 BTLPGND2 31 V V BTLPGND1 30 SW2 DO2+ 29 DO2- 28 DO1+ 27 DO1- 26 SW1 RL1 V RL2 RL3' RL3 DI1 25 DI3 23 24 DI2
1 2 3 4 5 6
VH FG ECR EC VCC2 PC1
KA3014
7 8 9 SIGGND VM CS1
10 SS 11 DIR PWRGND AVM12 21 RESX VCC1 12 SB REGOX VREFX
13
14
15
16
17
18
19
20
A 10F 12V BTL SVCC 12V CONTROL TRAY 10F
DI4 22
A3
A2
A1
SERVO AMP TRACKING FOCUS SLED
23
KA3014
Test Circuits 2
Spindle Motor Drive Part
H3+ H3- H2+ H2- H1+ H1-
A V V 48 H3+ SW12 1 2 2.5V SW13 3 EC SW14 5 5V A 6 4 VH FG ECR EC VCC2 PC1
A
A
A
A
A
47 H3-
46 H2+
45 H2-
44 H1+
43 H1-
42 BTLSGND
41 BIAS
40 AVM4
39 MUTE12
38 MUTE3
37 MUE4 DO4+ 36 DO4- 35 AVM3 34 DO3+ 33 DO3- 32 DO2+ 29 DO2- 28 DO1+ 27 DO1- 26 DI1 25 DI2 24
BTLPGND2 31
KA3014
SW15 12V 7 8 V 9 SW16 10 SS V SW17 11 DIR PWRGND REGOX VREFX RESX VCC1 12 SB AVM12 SIGGND VM CS1 BTLPGND1 30
DI4 22
IFR
SW18
13
14
15
16
17
18
19
20
21
VSB
SW19 SW20
24
DI3 23
A3
A2
A1
KA3014
Application Circuits
FOCUS TRACKING MUTE
HALL3
HALL2
HALL1
BTL BIAS VOLTAGE
+5V
48 H3+
47 H3-
46 H2+
45 H2-
44 H1+
43 H1-
42 BTLSGND
41 BIAS
40 AVM4
39 MUTE12
38 MUTE3
37 MUE4
1 10K FG SIGNAL 100pF SERVO TORQUE CONTROL VCC 2 3 4 5 6 0.1F
VH FG ECR EC VCC2 PC1
TRAY MUTE DO4+ 36 DO4- 35 AVM3 34 +5V DO3+ 33 DO3- 32 SLED MOTOR TRAY MOTOR DO2+ 29 DO2- 28 DO1+ 27 DO1- 26
KA3014
7 12V 8 9 SYSTEM CONTROL ROTATE DIRECTION SHORT BREAK SIGGND VM CS1 BTLPGND1 30 FOCUS ACTUATOR
10 SS 11 DIR PWRGND REGOX VREFX AVM12 RESX VCC1 12 SB
SLED MUTE
BTLPGND2 31
TRACKING ACTUATOR
DI1 25 DI4 DI3 23 DI2 24 SERVO AMP
A3
A2 15
13
14
16
A1
17
18
19
20
21
22
VCC xxV RESET
+5V
TRACKING FOCUS SLED CONTROL TRAY
S/S
VCC
VARIABLE VOLTAGE
25
KA3014
DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR INTERNATIONAL. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.
www.fairchildsemi.com 12/1/00 0.0m 001 Stock#DSxxxxxxxx 2000 Fairchild Semiconductor International
2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.

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