Path: EDN Asia >> Product Centre >> IC/Board/Systems Design >> ON Semi designs auto focus driver for small camera modules
IC/Board/Systems Design Share print

ON Semi designs auto focus driver for small camera modules

18 Jul 2014

Share this page with your friends

ON Semiconductor has unveiled an all-in-one type auto-focus driver that integrates current driver, control logic, Hall-sensor, and EEPROM, designed for small camera modules.

The LC898214XC features digital loop filter and provides fast, accurate auto focus convergence with temperature compensation, while consuming minimal power. The integrated constant current driver provides lower electro interference noise than competing solutions. In addition, the space-saving design enables thinner and lighter smartphones.

"There is a strong and growing demand for improved smartphone camera features – specifically for fast, accurate, power-friendly auto-focus," said Ikuya Kawasaki, GM of the Intelligent Power Solution division at ON Semi. "We developed this highly integrated, all-in-one auto focus controller for the specific demands of smartphone applications."

The closed auto focus system provides for more accurate auto focus control, while also lowering power consumption compared with open loop systems. The loop filter coefficients are adjustable via an I2C interface, allowing the device to be programmed for optimal convergence time when paired with various different actuators. All these features support a closed auto focus system, and can provide higher auto focus performance from one integrated circuit.

The driver is housed in a lead-free, Halide-free WLCSP-8 package and is priced at $0.88 in 4,000-unit quantities.

image name

LC898214XC block diagram. Source: ON Semi




Want to more of this to be delivered to you for FREE?

Subscribe to EDN Asia alerts and receive the latest design ideas and product news in your inbox.

Got to make sure you're not a robot. Please enter the code displayed on the right.

Time to activate your subscription - it's easy!

We have sent an activate request to your registerd e-email. Simply click on the link to activate your subscription.

We're doing this to protect your privacy and ensure you successfully receive your e-mail alerts.


Add New Comment
Visitor (To avoid code verification, simply login or register with us. It is fast and free!)
*Verify code:
Tech Impact

Regional Roundup
Control this smart glass with the blink of an eye
K-Glass 2 detects users' eye movements to point the cursor to recognise computer icons or objects in the Internet, and uses winks for commands. The researchers call this interface the "i-Mouse."

GlobalFoundries extends grants to Singapore students
ARM, Tencent Games team up to improve mobile gaming


News | Products | Design Features | Regional Roundup | Tech Impact