- 您现在的位置：买卖IC网 > Sheet目录311 > AS1122B-BQFT (ams)IC LED DVR 12-CH 24-TQFN
AS1122
Datasheet - D e t a i l e d D e s c r i p t i o n
For n devices in a chain only one identifier needs to be send to set all n devices to the same register setting.
Figure 30. Command Data for n-devices
Setting Dot Correction
The AS1122 can perform independent fine-adjustments to the output current of each channel. Dot correction is used to adjust brightness devia-
tions of LEDs connected to the output channels (OUT0:OUT11).
The device powers up with the following default settings: DC = 0 and GS = 0.
The 12 channels can be individually programmed with a 6-bit word for Dot Correction. The channel output can be adjusted in 64 steps from 0 to
100% of the maximum output current (I MAX ). The output current for each OUT n channel can be calculated as:
I OUT n = I MAX x
DC n
63
(EQ 1)
Where:
I MAX is the maximum programmable output current for each output;
DC n is the programmed dot correction value for output (DC n = 0 to 63);
n = 0 to 11
Dot correction data are simultaneously entered for all channels. The complete dot correction data format consists of 12 x 6-bit words, which
forms a 72-bit serial data packet (see Figure 31) and 8-bit for the identifier. Channel data is put on one by one, and the data is clocked in with the
MSB first.
Figure 31. Dot Correction Data Packet Format
The Dot Correction data is only valid if the exact identifier byte was send. Otherwise the data will be ignored.
Setting Greyscale Brightness (PWM)
The brightness of each channel output can be adjusted using a 12 bits-per-channel PWM control scheme which results in 4096 brightness steps,
from 0% to 100% brightness. The brightness level for each output is calculated as:
%Brightness =
GS n
4095
x 100
(EQ 2)
Where:
GS n is the programmed greyscale value for OUT n (GS n = 0 to 4095);
n = 0 to 11 greyscale data for all outputs.
The device powers up with the following default settings: GS = 0 and DC = 0.
www.austriamicrosystems.com/LED-Driver-ICs
Revision 1.00
13 - 22
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
AS1123-BTST
IC LED DVR 16-CH 40MA 24-QSOP
AS1390A-ZQFT
IC BOOST CTLR/BUCK CONV 20-QFN
AS212-L
SOCKET 12V AUTO SAFETY CAP MNT
AS212C
AUTO 12V SOCKET W/SAFETY CAP
AS212
SOCKET AUTO LOCKING BLACK
AS3635-ZWLT
IC PHOTOFLASH CHARGER 9WLCSP
AS3642-ZWLT
IC WHITE LED FLASH DRIVER 6WLCSP
AS3643-ZWLT
IC LED DVR CAMERA FLASH 13WLCSP
相关代理商/技术参数
AS1122-BQFM
功能描述:IC LED DRIVER LINEAR 40MA 24QFN 制造商:ams 系列:- 包装:剪切带（CT） 零件状态:在售 类型:线性 拓扑:- 内部开关:是 输出数:12 电压 - 供电（最低）:2.7V 电压 -?供电（最高）:3.6V 电压 - 输出:30V 电流 - 输出/通道:40mA 频率:- 调光:- 应用:背光，标牌 工作温度:-40°C ~ 85°C（TA） 安装类型:表面贴装 封装/外壳:24-TQFN 裸露焊盘 供应商器件封装:24-QFN（4x4） 标准包装:1
AS1122-BQFT
功能描述:IC LED DVR 12-CH W/DELAY 24-TQFN RoHS:是 类别:集成电路 (IC) >> PMIC - LED 驱动器 系列:* 产品培训模块:Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program 标准包装:2,500 系列:- 恒定电流:- 恒定电压:- 拓扑:升压（升压），切换式电容器（充电泵） 输出数:1 内部驱动器:是 类型 - 主要:背光 类型 - 次要:白色 LED 频率:625kHz ~ 875kHz 电源电压:2.7 V ~ 5.3 V 输出电压:5V 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽） 供应商设备封装:10-µMAX 包装:带卷 (TR) 工作温度:-40°C ~ 85°C
AS1122-XXX-I-A1-D
制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Filter
AS1122-XXX-I-A1-S
制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Filter
AS1122-XXX-I-A2-D
制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Filter
AS1122-XXX-I-A2-S
制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Filter
AS1122-XXX-I-A3-D
制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Filter
AS1122-XXX-I-A3-S
制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Filter