收藏本站
AS1112
Datasheet - D e t a i l e d D e s c r i p t i o n
Power Dissipation
To ensure proper operation of the device, the total power dissipation of the AS1112 must be below the power dissipation rating of the device
package. Total power dissipation is calculated as:
PD = (V CC x I CC ) + (V OUT x I MAX x n x
DC n
63
d PWM )
(EQ 2)
Where:
V CC is the device supply voltage;
I CC is the device supply current;
V OUT is the device OUT n voltage when driving LED current;
I MAX is the LED current adjusted by R IREF ;
DC n is the maximum dot correction value for OUT n ;
n is the number of OUT n driving LED at the same time;
d PWM is the duty cycle defined by pin OEN or the greyscale PWM value.
Operating Modes
The AS1112 operates in two modes (see Table 10) . Greyscale operating mode (see Figure 14 on page 13) and the shift registers are in reset
state at power-up.
Table 10. Operating Modes
Mode
0
1
Input Shift Register
192-bit
96-bit
Operating Mode
Greyscale PWM Mode
Dot Correction Data Input Mode
Setting Dot Correction
The AS1112 can perform independent fine-adjustments to the output current of each channel, i.e., dot correction. Dot correction is used to adjust
brightness deviations of LEDs connected to the output channels (OUT0:OUT15).
The device powers up with the following default seetings: DC = 63 and GS = 4095.
The 16 channels can be individually programmed with a 6-bit word. The channel output can be adjusted in 64 steps from 0 to 100% of the maxi-
mum 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 3)
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 15
Dot correction data are simultaneously entered for all channels. The complete dot correction data format consists of 16 x 6-bit words, which
forms a 96-bit serial data packet (see Figure 11) . Channel data is put on one by one, and the data is clocked in with the MSB first.
Figure 11. Dot Correction Data Packet Format
MSB
LSB
95
90
89
6
5
0
DC15.5
...
DC15.0
DC14.5
...
DC1.0
DC0.5
...
DC0.0
DC OUT15
www.austriamicrosystems.com/LED-Driver-ICs/AS1112
DC OUT14:DC OUT1
Revision 1.13
DC OUT0
11 - 19
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
AS1113-BSST IC DRIVER LED 16-CHAN 24-SSOP
AS1117-BQFT IC DRIVER 64LED MOBILE 24-TQFN
AS1118-BQFT IC DRIVER 64LED W/DELAY 24-TQFN
AS1121B-BQFT IC DRIVER 16-CH 32-TQFN
AS1122B-BQFT IC LED DVR 12-CH 24-TQFN
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
相关代理商/技术参数
AS1112-EB 制造商:ams 功能描述:AS1112 Evaluation Board
AS1112-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
AS1112-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
AS1112-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
AS1112-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
AS1112-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
AS1112-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
AS1112-XXX-I-L-A1-D 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Filter