specifications of any and all sanyo semiconductor co.,ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer ' s products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer ' s products or equipment. any and all sanyo semiconductor co.,ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment. the products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appli ances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliab ility and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for new introduction or other application different from current conditions on the usage of automotive device, communication device, office equipment, industrial equipment etc. , please consult with us about usage condition (temperature, operation time etc.) prior to the intended use. if there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 91212hk/82912hkpc 20111107-s00001 no.a2118-1/5 LC898212XA overview the af control device, LC898212XA (LC898212XA-mh), pr ovides an ideal way to implement the reduced power consumption and the improved autofocus precision and speed (reduced convergence time) required in high-pixel- count camera modules for use in smartphones. the LC898212XA integrates on a single chip an equalizer circuit employing digital calculation, and it can be combined with position sensors to build a closed-loop actuator control system. since closed-loop control provides better ability to maintain the control object than conventional open-loop systems and is not affected by position differences, the LC898212XA is ideal for use in af systems us ed in a wide variety of cameras. a closed-loop system uses position sensors for position control, and power consum ption is lower than with conventional open-loop control, which uses current values for position control. in addition, a new pwm drive system employed suppresses noise that could affect image quality while achieving reduced power consumption, making this ic ideal for use in mobile devices such as smartphones. the filter coefficients of the equalizer circuit can be adjusted to any values desired by making register settings via i 2 c communication. this makes it possible to build a control circuit optimized to the various types of actuators and thereby achieve faster autofocus (re duced convergence time) performance. the integrated adc provides up to 10-bit precision for high ly accurate af position contro l. also integrated on-chip are a constant current supply dac for drive and an op-amp with adjustable gain for use with the position sensors indispensable for building a closed-loop control system. ordering number : ena2118a cmos lsi af control lsi * i 2 c bus is a trademark of philips corporation.
LC898212XA no.a2118-2/5 features ? built-in equalizer circuit using digital operation af control equalize circuit any coefficient can be specified by i 2 c i/f ? i 2 c interface ? built-in a/d converter maximum 10-bit input 2 channel ? built-in d/a converter 8-bit output 2-channel (hall offset, constant current bias) ? built-in op amp 1 channel hall amp ? built-in osc 48mhz (frequency adjustment function) ? built-in pwm pulse generator circuit pwm circuit for af control ? 1-chip motor driver saturation drive h bridge 1 channel ? package wl-csp 12-pin lead-free, halogen-free ? supply voltage logic unit: internal core typ 1.2v (1.08v to 1.32v), av dd (2.6v to 3.6v) driver unit: vm (2.6v to 3.6v) package dimensions unit : mm (typ) 3440 sanyo : wlp12(1.77x1.37) top view side view side view bottom view 0.26 1.77 1.37 cba 0.285 0.4 0.285 0.4 1234 0.69 max 0.21 (0.43)
LC898212XA no.a2118-3/5 block diagram out1 out2 ad eq output control logic hbridge driver biaso opinp opinm da v dd vm pgnd pwm modulation v ss osc por reg av dd av dd v ddo hall i2cdt i2cck i 2 c i/f
LC898212XA no.a2118-4/5 pin description type i input p power supply, gnd nc not connect o output b bidirection i 2 c interface i2cck b i 2 c clock pin i2cdt b i 2 c data pin d/a interface biaso o d/a output (hall bias input) op-amp interface opinp i op-amp input opinm i op-amp input driver interface out1 o actuator output pin out2 o actuator output pin power supply pin v dd p digital power supply v ss p digital gnd v ddo p ldo power supply out vm p motor power supply pgnd p power gnd pin type ?o? ? ensure that it is set to open. pin type ?i? ? open is inhibited. en sure that it is connected to the v dd or v ss even when it is unused. (please contact sanyo electric co., ltd. fo r more information about selection of v dd or v ss .) pin type ?b? ? if you are unsure about processing method on the pin description of pin layout table, please contact us. note that incorrect processing of unused pins may result in defects. if you have any question, please feel free to contact us. pin layout circuit name number of pins circuit name number of pins analog 4 driver 4 logic 4 backside pin layout diagram (top view from the mold side) 4 v ddo vm pgnd 3 av dd i2cdt out1 2 opinp i2cck out2 1 v ss opinm biaso a b c
LC898212XA no.a2118-5/5 ps this catalog provides information as of september, 2012. specifications and information herein are subject to change without notice. sanyo semiconductor co.,ltd. 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 specif ications of any and all sanyo semiconductor co.,ltd. products described or contained herein. regarding monolithic semiconductors, if you should intend to use this ic continuously under high temperature, high current, high voltage, or drastic temperature change, even if it is used within the range of absolute maximum ratings or operating conditions, there is a possibility of decrease reliability. please contact us for a confirmation. sanyo semiconductor co.,ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. it is possible that these probabilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause damage to other property. when designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. in the event that any or all sanyo semiconductor co.,ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equ ipment, refer to the "delivery specification" for the sanyo semiconductor co.,ltd. product that you intend to use. upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of sanyo semiconductor co.,ltd. or any third party. sanyo semiconductor co.,ltd. shall not be liable for any claim or suits with regard to a third party's intellectual property rights which has resulted from the use of the technical information and products mentioned above.
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