Datasheet > AS1112B

AS1112B

更新时间： 2024-02-26 03:34:41

品牌	Logo	应用领域
艾迈斯 - AMSCO		驱动器
页数	文件大小	规格书
18页	611K
描述
16-Channel LED Driver with Dot Correction and Greyscale PWM

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AS1112B 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Contact Manufacturer	Reach Compliance Code：	unknown
风险等级：	5.62	Is Samacsys：	N
Base Number Matches：	1

AS1112B 数据手册

Datasheet

AS1112

16-Channel LED Driver with Dot Correction and

Greyscale PWM

1 General Description

2 Key Features

ꢀ

16 Channels

The AS1112 is a 16-channel, constant current-sink LED

driver. Each of the 16 channels can be individually

adjusted by 4096-step greyscale PWM brightness con-

trol and 64-step constant-current sink (dot correction).

Greyscale PWM Control: 12-Bit (4096 Steps)

Dot Correction: 6-Bit (64 Steps)

The dot correction circuitry adjusts the brightness varia-

tions between the AS1112 channels and other LED driv-

ers. Greyscale control and dot correction circuitry are

accessible via the SPI-compatible serial interface. A sin-

gle external resistor sets the maximum current value of

all 16 channels.

Drive Capability (Constant-Current Sink): 0 to 80mA

LED Power Supply Voltage: Up to 15V

Supply Voltage Range: 3.0 to 5.5 V

SPI-Compatible Serial Interface

The open & short LED detection function indicates a

broken, shorted or disconnected LED at one or more of

the outputs. The overtemperature flag indicates that the

Controlled In-Rush Current

Data Transfer & PWM Clock Rate: up to 30 MHz

CMOS Level I/O

device is in an overtemperature condition.

Table 1. Standard Products

Diagnostic Features

- LED Open/Short Detection

- Overtemperature Flag

Model

AS1112

AS1112B

Power-Down

TEST pin

Yes

Connect to GND

Connect to VCC

ꢀ

32-pin TQFN 5x5 mm Package

An additional power-down pin puts the AS1112 into a

40nA standby-mode.

3 Applications

The device is ideal for mono-, multi-, and full-color LED

displays, LED signboards, and display backlights.

The AS1112 is available in a 32-pin TQFN 5x5 mm

package.

Figure 1. Block Diagram

CLK 2 SDI

32 LD

29 PD

Constant Current

Driver

Control

Max OUTn

Current

VREF =

1.24V

IREF

Greyscale

12-Bit Greyscale

PWM Control

Delay

OUT0

Dot Correction

6-Bit Dot

Correction

Greyscale

Counter

GSCLK

Control

Input

Shift

Open&Short LED Detection

OEN

Constant Current

Driver

Control

Status

Open LED Detect,

Overtemperature

Flag, Dot

Greyscale

12 Register 23

12-Bit Greyscale

PWM Control

Delay

OUT1

Correction Data

Dot Correction

6-Bit Dot

Correction

MODE

Open&Short LED Detection

Open

Thermal

LED

Constant Current

Driver

Control

VCC

Flag

Detect

Input

Shift

Greyscale

180 Register191

12-Bit Greyscale

PWM Control

Delay

x15

OUT15

Dot Correction

90 Register 95

6-Bit Dot

Correction

XERR

Open&Short LED Detection

AS1112

GND

SDO

www.austriamicrosystems.com

Revision 1.06

1 - 18

12 3 4 5 6 7...18

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与AS1112B相关器件

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AS1112B-BQFT	AMSCO	16-Channel LED Dr iver wi th Dot Cor rect ion and Greyscale PWM	获取价格
AS1112-BQFT	AMSCO	16-Channel LED Dr iver wi th Dot Cor rect ion and Greyscale PWM	获取价格
AS1112C-BQFT	AMSCO	16-Channel LED Dr iver wi th Dot Cor rect ion and Greyscale PWM	获取价格
AS1112-XXX-I-A1-D	ETC	Analog Filter	获取价格
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