VB6851 [STMICROELECTRONICS]

QXGA camera module with auto focus; 支持自动对焦QXGA相机模块


型号：	VB6851
厂家：	ST
描述：	QXGA camera module with auto focus 支持自动对焦QXGA相机模块
文件：	总4页 (文件大小：141K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

VB6851

QXGA camera module with auto focus

Data Brief

Features

■ 3.15 megapixel resolution sensor

(2048 x 1536)

■ Integrated auto-focus mechanism

■ High level autofocus control interface

■ 4 element lens

■ Compact size: 8.5 mm x 8.5 mm x 5.9 mm

■ Compatible with SMIA 1.0 profile 2 functional

specification

PC00

■ Video data interface - CCP2.0

■ Command interface - CCI

accelerator (e.g. STV0986 ) or application engine

(e.g. STn8815) device can be incorporated in the

phone system to run the algorithms in hardware.

The specifications of these devices are contained

in a separate document.

■ Analog power supply from 2.4 V to 2.9 V

■ Digital power supply from 1.7 V to 2.9 V

■ On-board 10 bit ADC

■ Integral EMC shielding and EMI reduction

The module design is optimized for both footprint

and height. The auto-focus mechanism combined

with a multi-element lens provides excellent

image quality at focus distances from less than

10 cm to infinity. All external components,

including the auto-focus actuator drivers, are

integrated inside the camera module, apart from

two CCI pull-up resistors.

techniques

■ Ultra low power standby mode

■ Analog binning (2x2, 2x4) for low power video

mode

Description

This databrief outlines a high performance

3.15 megapixel auto-focus camera module

(VB6851) for use across a range of mobile phone

handsets and accessories. It is designed to be

used for both high quality stills capture and video

modes. The module is SMIA 1.0 profile 2

compatible and is capable of generating raw

bayer 3 MP images up to 20 fps. The VB6851

supports the CCI control and CCP 2.0 data

interfaces.

VB6851 offers an ultra low power consumption

hardware standby mode consuming less than

30 µW (typ.).

As different phone platforms have different

baseband processors with varying capabilities, it

may not be possible for all phones to support the

associated image processing and auto-focus

algorithms. Where the baseband cannot support

this processing load, a separate hardware

February 2008

Rev 1

1/4

For further information contact your local STMicroelectronics sales office.

www.st.com

Overview

VB6851

Overview

Figure 1.

System diagram

Figure 2.

Block diagram

VB6851

EXTCLK

XSHUTDOWN

PLL and clock management

VDIG

DGND

Power Mgmt Power-on reset

EXTCLK

XSHUTDOWN

STV0986 Imaging

system controller

VB6851

3 megapixel

auto-focus

camera

Line SRAM

Sensor

control

registers

VCAP

SCL

SDA

X Decoder

CCI

VANA

AGND

Column ADC

baseband

(SLC + SDA)

module

Dark Cal

Scaling

2056 x 1544

Pixel array

CCP 2.0

application

processor

(STn8815)

(CLKP, CLKN)

CLKP

CLKN

DATAP

DATAN

Defect

Correction

Output

Column ADC

X Decoder

De-rating

Output

Formatter

Line SRAM

Table 1.

Technical specifications

Parameter

Description

Pixel resolution

Sensor technology

Pixel size

2048 x 1536 (QXGA)

ST IMG175 process

1.75 µm x 1.75 µm

+ 81 dB

Exposure control

Analog gain

+ 24 dB (max)

+ 6 dB (max)

Digital gain

Dynamic range

Signal to noise

60 dB

36 dB (@ 100 lux)

Analog: 2.4 V - 2.9 V

Digital: 1.7 V - 1.9 V

Supply voltages

<150 mW in infinity

Average power consumption 20fps

<350 mW at macro including actuator current

8.5 mm x 8.5 mm x 5.9 mm

51° +/- 2 HFOV F/2.8

<|1.0%|

Package size (lxwxh)

Lens

TV distortion

Relative illumination

Package type

System attach

45 % (typ.)

SMIA85 auto-focus

SMIA85 socket

2/4

VB6851

Ordering information

Table 2.

Order codes

Order code

Package

Packing

VB6851S0VO/T2⁽¹⁾

SMIA85AF with CCP2 I/F with socket Tape and reel

1. ECOPACK® package

Revision history

Table 3.

Date

07-Feb-2008

Document revision history

Revision

Changes

Initial release.

3/4

VB6851

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