LC898212XA SANYO [Sanyo Semicon Device], LC898212XA Datasheet

LC898212XA

Manufacturer Part Number

LC898212XA

Description

AF Control LSI

Manufacturer

SANYO [Sanyo Semicon Device]

Datasheet

1.LC898212XA.pdf (5 pages)

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Ordering number : ENA2118A

LC898212XA

Overview

The AF control device, LC898212XA (LC898212XA-MH), provides 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 used in a wide variety of cameras. A closed-loop system

uses position sensors for position control, and power consumption 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

communication. This makes it possible to build a control circuit optimized to the various types of actuators and

thereby achieve faster autofocus (reduced convergence time) performance.

The integrated ADC provides up to 10-bit precision for highly accurate AF position control. 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.

* I

"standard application", intended for the use as general electronics equipment. The products mentioned herein

C Bus is a trademark of Philips Corporation.

Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to

shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life,

aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system,

safety equipment etc.) that shall require extremely high level of reliability 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.

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

device, the customer should always evaluate and test devices mounted in the customer

equipment.

s products or equipment. To verify symptoms and states that cannot be evaluated in an independent

CMOS LSI

AF Control LSI

91212HK/82912HKPC 20111107-S00001 No.A2118-1/5

s products or

Related parts for LC898212XA

LC898212XA Summary of contents

Page 1

... LC898212XA is ideal for use in AF systems used in a wide variety of cameras. A closed-loop system uses position sensors for position control, and power consumption is lower than with conventional open-loop control, which uses current values for position control ...

Page 2

... Package WL-CSP 12-pin Lead-free, halogen-free  Supply voltage Logic unit: Internal core typ 1.2V (1.08V to 1.32V (2.6V to 3.6V) Driver unit: VM (2.6V to 3.6V) Package Dimensions unit : mm (typ) 3440 TOP VIEW SIDE VIEW 1.37 0.26 SIDE VIEW SANYO : WLP12(1.77x1.37) LC898212XA 2 C I/F BOTTOM VIEW 0.4 0.285 No.A2118-2/5 ...

Page 3

... Block Diagram I2CDT I2CCK AV DD BIASO OPINP Hall OPINM LC898212XA I/F DA PWM AD EQ Modulation OSC VM PGND OUT1 H Bridge OUT2 Driver Output Control logic POR REG V DDO V SS No.A2118-3/5 ...

Page 4

... Backside pin layout diagram (Top View from the mold side DDO I2CDT 2 OPINP I2CCK OPINM A B LC898212XA TYPE Power supply, GND NC NOT CONNECT Clock pin Data pin D/A output (Hall bias input) Op-Amp input Op-Amp input Actuator output pin ...

Page 5

... 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. This catalog provides information as of September, 2012. Specifications and information herein are subject to change without notice. LC898212XA PS No.A2118-5/5 ...

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