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参数资料
| 型号： | AS1112 EB |
| 厂商： | ams |
| 文件页数： | 12/20页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL AS1112 |
| 标准包装： | 1 |
| 电流 - 输出 / 通道： | 0.5 ~ 100 mA |
| 输出及类型： | 16，非隔离 |
| 输出电压： | 0 ~ 15 V |
| 特点： | 过热保护，开路 LED，短路 LED，诊断 |
| 输入电压： | 3 ~ 5.5 V |
| 已供物品： | 板 |
| 已用 IC / 零件： | AS1112 |
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
DC OUT14:DC OUT1
Revision 1.13
DC OUT0
11 - 19
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PDF描述 |
|---|---|
| AS1115 DB-YELLOW | BOARD DEMO AS1115 YELLOW |
| AS1116 DB-YELLOW | BOARD DEMO AS1116 YELLOW |
| AS3691A EB | BOARD EVAL AS3691A |
| AS5030 DB | BOARD DEMO AS5030 |
| AS5048-DB-1.0 | BOARD DEMO AS5048 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
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