UTC UA9392 LINEAR INTEGRATED CIRCUIT 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 HSOP-28 *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. CH3OUT R CH3OUT F MUTE 18 17 16 15 6 7 8 9 10 11 12 13 14 CH2OUT F GND CH1 FIN 19 CH2OUT R CH1 RIN RC IN3 RC IN1 20 RC IN2 CH1OUT R UTC CH3 RIN 5 21 CH2 RIN 4 CH3 FIN 3 22 CH2 FIN 2 Vcc 1 23 GND VSIN 24 Vcc VBIN 25 VREF OUT CH4OUT R 26 VBIN CH4OUT F 27 VREF IN GND 28 CH1OUT F PIN CONFIGURATION UNISONIC TECHNOLOGIES CO. LTD 1 QW-R109-010,A UTC UA9392 LINEAR INTEGRATED CIRCUIT PIN DESCRIPTIONS PIN NO. PIN NAME 1 CH1OUT F 2 CH1OUT R 3 RC IN1 4 CH1 RIN 5 CH1 FIN 6 VREF IN 7 VREF OUT 8 GND 9 CH2 FIN 10 CH2 RIN 11 RC IN2 12 CH2OUT R 13 CH2OUT F 14 GND 15 MUTE 16 CH3OUT F 17 CH3OUT R 18 RC IN3 19 CH3 RIN 20 CH3 FIN 21 Vcc 22 Vcc 23 VBIN 24 VSIN 25 VBIN 26 CH4OUT R 27 CH4OUT F 28 GND *Pin23 and Pin25 are shorted internally. UTC DESCRIPTION Drive channel 1 forward output Drive channel 1 reverse output Connect to attach resistor/capacitor(1) Drive channel 1 reverse input Drive channel 1 forward input Internal reference amplifier input Internal reference amplifier output Ground for internal reference and internal power circuit Drive channel 2 forward input Drive channel 2 reverse input Connect to attach resistor/capacitor(2) Drive channel 2 reverse output Drive channel 2 forward output Ground for internal reference and internal power circuit Drive mute control input Drive channel 3 forward output Drive channel 3 reverse output Connect to attach resistor/capacitor(3) Drive channel 3 reverse input Drive channel 3 forward input Power supply Power supply Drive channel 4 bias input* Drive channel 4 input Drive channel 4 bias input* Drive channel 4 reverse output Drive channel 4 forward output Ground for internal reference and internal power circuit UNISONIC TECHNOLOGIES CO. LTD 2 QW-R109-010,A UTC UA9392 LINEAR INTEGRATED CIRCUIT BLOCK DIAGRAM CH1OUTF 1 CH1OUTR 2 RCIN1 CH1RIN 28 GND 27 CH4OUTF F LEVEL SHIFT 3 4 CH1FIN 5 VREFIN 6 VREFOUT 7 REV FWD 26 CH4OUTR R INTER FACE + 25 VBIN 190k - 24 VSIN 100k 23 VBIN + 22 VCC THERMAL SHUTDOWN CIRCUIT GND 8 CH2FIN 9 CH2RIN 10 21 VCC FWD FWD REV INTER FACE INTER FACE R R RCIN2 11 CH2OUTR 12 UTC 19 CH3RIN 18 RCIN3 F F 17 CH3OUTR CH2OUTF 13 GND 14 REV 20 CH3FIN 16 CH2OUTF DRIVE MUTE 25k UNISONIC TECHNOLOGIES 25k 15 MUTE CO. LTD 3 QW-R109-010,A UTC UA9392 LINEAR INTEGRATED CIRCUIT 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 Supply voltage RATING Vcc 5 ~ 10 * UNIT 2 V *2 Set the power supply voltage according to power dissipation. ELECTRICAL CHARACTERISTICS(Ta=25℃,Vcc=8V,f=1kHz,RL=8Ω, unless otherwise specified) ITEMS SYMBOL Quiescent current Bias pin voltage Bias pin voltage reguration Mute-off voltage Mute-on voltage <Drive(other than spindle)> IQ Input high level voltage VBIAS △VBIAS VMOFF VMON VIH TEST CONDITIONS No load 1mA source, sink MIN TYP. MAX UNIT 5 3.4 -30 2.0 12 3.68 18 4.00 30 mA V mV V V 0.5 V 2.4 Input low level voltage VIL 0.5 ⅠIH Input high level current 170 310 450 VIN=5V ⅠIL Input low level current -10 0 VIN=0V Output voltage,offset VOO (Same for spindle) -30 30 Output high level voltage VOHD FIN=5V, RIN=0V 4.90 5.40 Output low level voltage VOLD FIN=0V, RIN=5V 1.50 2.00 Constant current IcONST 14 22 30 Internal integral capacitance C 24 △tr Current pulse rise time 1 At startup 0.08 1 △tf Current pulse fall time 2 At shutdown 0.55 1 △tr-f Current pulse time differential -160 160 VIN=VREF±0.5,1,1.5*1 Driver linearity LIN 90 100 110 Ripple rejection RR VIN=100mVrms,100Hz 70 <Spindle driver> Input bias current IB 10 300 Synchronous input voltage VICM 1.6 6.4 Max.output voltage high VOHD 4.90 5.40 Max.output voltage low VOLD 1.50 2.00 Voltage gain GVC 8.0 10.5 13 Slew rate SR 2 Ripple rejection RRS VIN=100mVrms, 100Hz 70 *1: if Vo=V01 when VIN=VREF±0.5V,Vo=V02 when VIN=VREF±1.0V,and Vo=V03 when VIN=VREF±1.5V,then LIN=(V03 * V02)/(V02 * V01) *100%. UTC UNISONIC TECHNOLOGIES CO. LTD V μA μA mV V V μA pF μs μs μs % dB nA V V V dB V/μs dB 4 QW-R109-010,A UTC UA9392 LINEAR INTEGRATED CIRCUIT 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 (I1) 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). I1 BUF1 SW1 F R 24pF INTERFACE OUT R OUT F 100K BUF2 SW2 I2 Fig. 1 To maintain the HIGH level with forward (or reverse) in-put, the DC voltage generated at point A is: I1×R ≒ 2.5V (reverse : - 2.5V) F (R) INPUT 5V 0V R (F) 0V Fig. 2 This is the voltage generated relative VREF. The setting is such that a voltage differential of 5V is generated be-tween output pins. The time constant is: R×C = 2.4μsec This can be increased by inserting a capacitor between point A (pin3,11and 18) and VREF·The constant current (Iconst) given in the electrical characteristics refers to I1 and I2 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. UTC UNISONIC TECHNOLOGIES CO. LTD 5 QW-R109-010,A UTC UA9392 LINEAR INTEGRATED CIRCUIT OUT F(R) OUT R(F) Output Vref 0V Fig. 3 The level shift circuit converts the pre-stage amplifier output (centered on the bias level and impressed on pins 23 and 25) to positive and negative amplitudes centered on VREF. The level shift circuit's output is BTL-output from the buffer amplifier. Because of the high input impedance, the IC is designed to accommodate filter comprising attached resistors and capacitors. (Example) For secondary filters 190K 100K Servo output 2.5V Fig. 4 OPERATION NOTES (1) (2) (3) The UTC UA9392 has an internal thermal shutdown circuit. Output current is muted when the chip temperature exceeds 180℃(typically). The output current can also be muted by lower the mute pin (pin 15) voltage below 0.5V. All four driver output channels are muted during thermal shutdown, muting and a drop in bias pin voltage. No other components are muted. UTC UNISONIC TECHNOLOGIES CO. LTD 6 QW-R109-010,A UTC UA9392 LINEAR INTEGRATED CIRCUIT I/O ELECTRICAL CHARACTERISTICS 190K pin 23,25 pin 27 100K - + VIN + - - RL pin 24 1/2 VCC VOUT + pin 26 CH4 Output Drive 5 RL=8Ω RL=12Ω 4 3 2 1 0 -1 -2 -3 -4 -5 -2 UTC -1.5 -1 -0.5 0 0.5 1 1.5 UNISONIC TECHNOLOGIES 2 CO. LTD 7 QW-R109-010,A UTC UA9392 LINEAR INTEGRATED CIRCUIT 100K pin 3,11,18 100K pin 1,13,16 - + VIN + - RL pin 7 VrefOut VOUT + pin 2,12,17 CH1/2/3 Output Drive 5 4 RL=8Ω RL=12Ω 3 2 1 0 -1 -2 -3 -4 -5 -3 UTC -2 -1 0 1 2 UNISONIC TECHNOLOGIES 3 CO. LTD 8 QW-R109-010,A UTC UA9392 LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT Focus Error OUT Reverse Forward MUTE Reverse Bias 2.5V Forward Reverse Forward Splindle OUT Tracking Error OUT BLED OUT Digital Servo +8V SPLINDLE MOTOR BLED MOTOR M 28 M 27 26 25 24 23 22 21 20 19 18 17 16 15 8 9 10 11 12 13 14 UTC UA9392 1 2 3 4 5 6 7 FOCUS COIL UTC UNISONIC TECHNOLOGIES TRACKING COIL CO. LTD 9 QW-R109-010,A UTC UA9392 LINEAR INTEGRATED CIRCUIT VCD PLAYER MOTOR DRIVER CIRCUIT From Digital Servo VC R149 150K SPLINDLE MOTOR From Digital Servo 30 C141 100 2 C117 1.65nF +9V R130 150K BLED MOTOR M SP- M SL- SP+ SL+ 81 28 27 26 25 24 23 22 21 20 19 18 17 16 15 8 9 10 11 12 13 14 From Digital Servo UTC UA9392 1 2 3 4 5 6 7 C178 0.1μ F FOCUS COIL C179 30pF C176 30pF 4 5 From Digital Servo UTC C142 1μF 8 TRACKING COIL R103 470K 10 From Digital Servo UNISONIC TECHNOLOGIES CO. LTD 10 QW-R109-010,A UTC UA9392 LINEAR INTEGRATED CIRCUIT POWER DISSIPATION Pd (W) 3 Ta=25℃ mount on 50×50mm2 t=1.0mm paper phenol PCB 2 1 0 25 50 75 100 125 150 Ambient Temperature, Ta (℃) UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UTC UNISONIC TECHNOLOGIES CO. LTD 11 QW-R109-010,A