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| SA1469XH 4-CH BTL DRIVER FOR CD PLAYER WITH 5.0V OUTPUT VOLTAGE DESCRIPTION The SA1469XH, an IC for CD players, has a 4-channel BTL driver, 5V regulator (attached PNP transistor required), standard operational amplifier, and internal reset output linked to an internal thermal shutdown circuit. The driver has gain adjustment input pins for each channel, allowing gain to be set to the desired value. Also, the internal level shift circuit helps reduce the number of attached components. FEATURES * 1-phase, full-wave, linear DC motor driver * Gain is adjustable with an attached resistor. * Internal standard operational amplifier. * Internal 5V regulator. (required attached PNP transistor) * Internal thermal shutdown circuit with hysteresis capabilities. ORDERING INFORMATION Device SA1469XH Package HSOP-28-375-0.8 BLOCK DIAGRAM OUT4B OPIN(+) GND VREF IN4A IN4B GND OUT4A IN3A VCC VCC 10K 50K 50K HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn OPOUT OUT1A OUT1B OUT2B OUT2A IN1A IN1B MUTE IN2B IN2A GND REG REO OPIN(-) OUT3B OUT3A IN3B REV:1.4 2008.07.23 Page 1 of 11 SA1469XH ABSOLUTE MAXIMUM RATING (Tamb=25C, unless otherwise specified) Characteristics Supply Voltage Power Dissipation Operating Temperature Storage Temperature Maximum Output Current Symbol VCC PD Topr Tstg Imax Value 12 1.7(Note) -40~85 -55~150 1 Unit V W C C A Note: 1. When mounted on 76mm x 114mm x 1.57mm PCB (Phenolic resin material). 2. Power dissipation reduces 13.6mW / C for using above Tamb=25 C. 3. Do not exceed Pd and SOA (Safe Operating Area). 2.0 1.5 1.0 0.5 0 0 25 50 75 100 125 150 175 Ambient temperature: ( Tamb ) ELECTRICAL CHARACTERISTICS (Tamb=25C, VCC=8.0V, unless otherwise specified) Characteristics A REGULATOR PART Regulator Output Voltage Load Regulation Line Regulation B DRIVER PART Quiescent Circuit Current Input Offset Voltage Output Offset Voltage Maximum Sink Current Maximum Source Current Maximum Output Voltage Closed Loop Voltage Gain Ripple Rejection Ratio Slew Rate ICCQ VOF VOO ISINK ISOU VOM A/F RR SR VI=0 RL=4, VCC RL=4, GND VI=2VRMS, 1kHz VI=0.1VRMS, 1kHz VI=-20dB, 120Hz 100Hz, squarewave 5.5 -5.0 -30 0.5 0.5 2.5 7.0 60.0 1.0 9.5 0 0 0.8 0.8 3.0 8.0 80.0 2.0 13.5 5.0 30 ---9.0 --mA mV mV A A V dB dB V/s VREG VRL VCC IL=100mA IL=0mA to 200mA IL=200mA, VCC=6 to 9V 4.75 -40.0 -10.0 5 0 0 5.25 10.0 20.0 V mV mV Symbol Test conditions Min. Typ. Max. Unit (To be continued) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.4 2008.07.23 Page 2 of 11 SA1469XH (Continued) Characteristics C OP AMP Input Offset Voltage Input Bias Current High Level Output Voltage Low Level Output Voltage Output Sink Current Output Source Current Open Loop Voltage Gain Ripple Rejection Ratio Slew Rate Common Mode Rejection Ratio Symbol Test conditions Min. Typ. Max. Unit VOF1 IB1 VOH1 VOL1 ISINK1 RL=50, GND -5.0 -6 10 10 65 50 0.5 70 0 -40 50 78 70 1 84 5.0 300 1.8 - mV nA V V mA mA dB dB V/s dB ISOURCE1 RL=50, VCC GVO1 RR1 SR CMRR1 VIN=-75dB, f=1kHz VIN=-20dB, 120Hz Square, VOUT=2Vp-p, f=120KHz VIN=-20dB, 1kHz PIN CONFIGURATION OPIN(+) GND 28 27 26 25 24 23 22 21 20 19 18 17 16 15 SA1469XH 1 OUT1A 2 OUT1B 3 IN1A 4 IN1B 5 REG 6 REO 7 MUTE 8 GND 9 IN2B 10 11 12 13 14 OPOUT IN2A OUT2B OUT2A PIN DESCRIPTION Pin No. 1 2 3 4 5 6 7 8 Symbol OUT1A OUT1B IN1A IN1B REG REO MUTE GND O I -I/O O O I I Drive output Drive output Drive input Drive input Regulator Regulator output Mute Ground (To be continued) Description HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn OPIN(-) OUT4A OUT4B OUT3B OUT3A VREF IN4A IN4B IN3B IN3A GND VCC VCC REV:1.4 2008.07.23 Page 3 of 11 SA1469XH (Continued) Pin No. 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Symbol IN2B IN2A OUT2B OUT2A GND OPOUT OPIN (-) OPIN (+) OUT3A OUT3B IN3A IN3B VCC VCC VREF IN4B IN4A OUT4B OUT4A GND I/O I I O O -O I I O O I I --I I I O O -Drive input Drive input Drive output Drive output Ground Opamp output Opamp input (-) Opamp input (+) Drive output Drive output Drive input Drive input Supply voltage Supply voltage 2.5V bias voltage Drive input Drive input Drive output Drive output Ground Description FUNCTIONAL DESCRIPTION 1. MUTE Function Thermal shutdown External muting Mute T175C V(mute) 1.4V or open Operation conditions 1) The circuit is muted during thermal shutdown and during the mute-on state.In each case, only the drivers are muted. 2) 3) During mute ,the output pins remain at the internal bias voltage, roughly (Vcc-Vf)/2. When the mute pin # 7 is open or the voltage of the mute pin # 7 is below 0.5V, the mute circuit is activated so that the output circuit will be muted. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.4 2008.07.23 Page 4 of 11 SA1469XH 4) 5) When the voltage of the mute pin is above 2V, the mute circuit is stopped and the output circuit is operated normally. If the chip temperature rises above 175C, then the TSD (Thermal Shutdown) circuit is activated and the output circuit is muted. 2. TSD (THERMAL SHUTDOWN) VREF Output Driver Bias Qn R2 R1 1) 2) 3) The VREF is the output voltage of the band-gap-referenced biasing circuit and acts as the input voltage of the TSD circuit. The base-emitter voltage of the TR, Qn is designed to turn-on at below voltage. VBE=VREF * R2/(R1+R2)=460mV When the chip temperature rises up to 175C, then the turn-on voltage of the Qn would drop down to 460mV. (Hysteresis: 25) and, the Qn would turn on so the output circuit will be muted. 3. OP-AMP OP-Amp is integrated in the IC for user convenuence. OPIN(+) OPIN(-) Pins 14, 15 and 16 may be left open when the operational amplifier is not used. 4. DRIVER 1) 2) 3) 4) The voltage, VREF, is the reference voltage given by the BIAS voltage of the pin # 23. The input signal through the pin # 3 is amplified by 13K/10K times and then fed to the level shift. The level shift produces the current due to the difference between the input signal and the arbitrary reference signal. The current produced as +V and -V is fed into the driver buffer. Driver buffer operates the power TR of the output stage according to the state of the input signal. HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn +- OPOUT REV:1.4 2008.07.23 Page 5 of 11 SA1469XH 5) 6) 7) 8) The output stage is the BTL driver and the motor is rotating in forward direction by operating TR Q1 and TR Q4. on the other hand, if TR Q2 and TR Q3 is operating, the motor is rotating in reverse direction. When the input voltage through the pin # 3 is below the VREF, then the direction of the motor in forward direction. When the input voltage through the pin # 3 is above the VREF, then the direction of the motor in reverse direction. If it is desired to change the gain, then the pin # 4 or # 24 can be used. 5. RADIATION FIN IS CONNECTING TO THE INTERNAL GND OF THE PACKAGE. Connect the fin to the external GND. 6. REGULATOR This is a typical series regulator that generates a reference voltage internally. A PNP low saturation type transistor must be connected. REG Attached PNP VOUT +- VREF REO Oscillation prevention HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.4 2008.07.23 Page 6 of 11 SA1469XH TEST CIRCUIT HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.4 2008.07.23 Page 7 of 11 SA1469XH TYPICAL APPLICATION CIRCUIT 15 16 Sled Motor 17 18 19 Spindle SERVO Sled 20 21 14 13 12 11 10 9 8 Sprindle Motor SA1469XH BIAS VCC ON: Low OFF: High Tracking AMP Focus 22 23 24 25 Tracking Actuator 26 27 28 7 6 5 4 3 2 1 Mute 5V REG.OUT 22F KSB772 VCC Focus Actuator ELECTRICAL CHARACTERISTICS CURVES Fig.1 Driver I/O characteristics (variable load) Fig.2 Driver I/O characteristics (variable power supply) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.4 2008.07.23 Page 8 of 11 SA1469XH Fig. 3 Power supply voltage vs. output offset voltage Fig. 4 Driver gain vs. temperature (RIN connected via gain adjustment pin) Fig. 5 Regulator voltage vs. temperature Fig. 6 Load current vs. regulator voltage Fig. 7 Operational amplifier vs. open loop 80 180 60 90 G 0 -90 0 -180 1k 10k 100k 1M -20 100M 20 40 Frequency: f (Hz) HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.4 2008.07.23 Page 9 of 11 SA1469XH PACKAGE OUTLINE HSOP-28-375-0.8 UNIT: mm 10.20.3 7.50.2 HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn 0.15 REV:1.4 2.300.20 +0.10 -0.05 2008.07.23 Page 10 of 11 9.5250.2 SA1469XH ATTACH Revision History Data 2003.05.26 2007.03.12 2007.08.13 2007.10.25 2008.07.23 REV 1.0 1.1 1.2 1.3 1.4 Original Modify the "Operating Temperature " Modify the " Block Diagram", "Supply Voltage" and "Functional Description" Add the "Power dissipation curve" Modify the "Power dissipation curve" 1 1,2,4 2 Description Page HANGZHOU SILAN MICROELECTRONICS CO.,LTD Http://www.silan.com.cn REV:1.4 2008.07.23 Page 11 of 11 |
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