AN41908A

AN41908A Lens Driver IC for camcorder and security-camera incorporating Iris control FEATURES ・ Voltage drive system 256-step microstep drivers (2 systems) (Super low noise Zoom and Focus drive) ・ Built-in Iris controller ・ 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) DESCRIPTION AN41908A is a lens motor driver IC for camcorder and security-camera featuring the functions of Iris control. Voltage drive system and several torque ripple correction techniques enable super- low noise microstep drive. APPLICATIONS ・Camcorder, Security-camera SIMPLIFIED APPLICATION Noise Level (dB) 2.50Hz 32.50Hz 62.50Hz 92.50Hz 122.50Hz 152.50Hz 182.50Hz 212.50Hz 242.50Hz 272.50Hz 302.50Hz 332.50Hz 362.50Hz 392.50Hz 422.50Hz 452.50Hz 482.50Hz 512.50Hz 542.50Hz 572.50Hz 602.50Hz 632.50Hz 662.50Hz 692.50Hz 722.50Hz 752.50Hz...