AN41908A Lens Driver IC for camcorder and security-camera incorporating Iris control DESCRIPTION FEATURES Voltage drive system 256-step microstep drivers AN41908A is a lens motor driver IC for camcorder and security-camera featuring the functions of Iris control. (2 systems) Voltage drive system and several torque ripple (Super low noise Zoom and Focus drive) correction techniques enable super- low noise microstep Built-in Iris controller drive. Motor control by 4-line serial data communication 2 systems of open-drain for driving LED PCB space saving. Low power consumption of Iris drive by PWM 44 pin Plastic Quad Flat Non-leaded Package (QFN Type) APPLICATIONS Camcorder, Security-camera SIMPLIFIED APPLICATION Super low noise Zoom and Focus drive. V+ Hall H+ Sensor H V 0.01 F No Correction 35 30 25 20 OP3INP SCK 1 33 15 SENS CS 2 32 10 OP3OUT SOUT 3 31 5 AVDD3 10 k DVDD REF DVDD 4 30 (3.1 V) (3.1 V) 0 AVDD3 OSCIN 5 29 -5 ADTESTIN GNDD 6 28 -10 TEST LED2 7 27 -15 OUTE2 LED1 Frequency (Hz) 8 26 VDD5 OUTA1 VDD5 9 25 (4.8 V) M MGNDA GND5 10 24 With Correction OUTE1 N.C. 11 23 35 30 10 dB 25 MVCCA MVCCB 20 (4.8 V) (4.8 V) 15 10 5 0 -5 Notes) -10 This application circuit is an example. The operation of mass -15 production set is not guaranteed. You should perform enough Frequency (Hz) evaluation and verification on the design of mass production set. You are fully responsible for the incorporation of the above application circuit and information in the design of your equipment. Ver. BEB Publication date: November 2012 1 N.C. OP4OUT 12 44 0.1 F OUTD2 OP4INN 13 43 MVCCB VREF 14 100 pF 42 OUTD1 CREFIN 15 41 0.1 F OUTC2 GNDA 16 40 MGNDB RSTB 17 39 OUTC1 PLS2 18 38 PLS1 OUTB2 19 37 MVCCA VD FZ 20 36 VD IS OUTB1 21 35 OUTA2 SIN 22 34 Noise Level (dB) Noise Level (dB) 2.50Hz 2.50Hz 32.50Hz 32.50Hz 62.50Hz 62.50Hz 92.50Hz 92.50Hz 122.50Hz 122.50Hz 152.50Hz 152.50Hz 182.50Hz 182.50Hz 212.50Hz 212.50Hz 242.50Hz 242.50Hz 272.50Hz 272.50Hz 302.50Hz 302.50Hz 332.50Hz 332.50Hz 362.50Hz 362.50Hz 392.50Hz 392.50Hz 422.50Hz 422.50Hz 452.50Hz 452.50Hz 482.50Hz 482.50Hz 512.50Hz 512.50Hz 542.50Hz 542.50Hz 572.50Hz 572.50Hz 602.50Hz 602.50Hz 632.50Hz 632.50Hz 662.50Hz 662.50Hz 692.50Hz 692.50Hz 722.50Hz 722.50Hz 752.50Hz 752.50Hz 782.50Hz 782.50Hz 812.50Hz 812.50Hz 842.50Hz 842.50Hz 872.50Hz 872.50Hz 902.50Hz 902.50Hz 932.50Hz 932.50Hz 962.50Hz 962.50Hz 992.50Hz 992.50HzAN41908A ABSOLUTE MAXIMUM RATINGS Parameter Symbol Rating Unit Note AVDD3 0.3 to + 4.0 Controller supply voltage V *1 DVDD 0.3 to + 4.0 Supply voltage for motor controller MVCCA, MVCCB 0.3 to + 6.0 V *1 1 Supply voltage for motor controller VDD5 0.3 to + 6.0 V *1 2 Operating ambient temperature T 20 to + 85 C *2, *4 opr Operating junction temperature T 20 to + 125 C *2 j Storage temperature T 55 to + 125 C *2 stg OUTA1, OUTA2, Motor driver 1 (focus, zoom) OUTB1, OUTB2, H bridge drive current 0.25 A/ch OUTC1, OUTC2, (DC current) OUTD1, OUTD2 Motor driver 2 (iris) H bridge drive current OUTE1, OUTE2 0.15 A/ch (DC current) Instantaneous H bridge drive I 0.4 A/ch M(pulse) current OP3INP, OP4INN, ADTESTIN, 0.3 to (AVDD3 + 0.3) V *3 REF, CREFIN Input Voltage Range TEST, OSCIN, CS, SCK, SIN, 0.3 to (DVDD + 0.3) V *3 VD IS, VD FZ, RSTB OP3OUT, OP4OUT, 0.3 to (AVDD3 + 0.3) V *3 SENS,VREF Output Voltage Range PLS1, PLS2, SOUT 0.3 to (DVDD + 0.3) V *3 Output Current Range LED1, LED2 30 mA HBM (Human Body Model) 2 kV ESD CDM (Charge Device Model) 1 kV Notes). This product may sustain permanent damage if subjected to conditions higher than the above stated absolute maximum rating. This rating is the maximum rating and device operating at this range is not guaranteeable as it is higher than our stated recommended operating range. When subjected under the absolute maximum rating for a long time, the reliability of the product may be affected. *1:The values under the condition not exceeding the above absolute maximum ratings and the power dissipation. *2:Except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for Ta = 25C. *3: (DVDD + 0.3 ) V must not be exceeded 4.0 V and (AVDD + 0.3 ) V must not be exceeded 4.0 V. *4:The power dissipation shown is the value at Ta = 85C for the independent (unmounted) IC package without a heat sink. When using this IC, refer to the PD-Ta diagram of the package standard and design the heat radiation with sufficient margin so that the allowable value might not be exceeded based on the conditions of power supply voltage, load, and ambient temperature. Ver. BEB 2