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参数资料
| 型号： | AS1100 DB |
| 厂商： | ams |
| 文件页数： | 12/17页 |
| 文件大小： | 0K |
| 描述： | BOARD DEMO AS1100 |
| 标准包装： | 1 |
| 输出及类型： | 8，非隔离 |
| 输出电压： | 2.3V |
| 特点： | 8 位数，7 段显示器 |
| 输入电压： | 1.5 ~ 3.5 V |
| 已供物品： | 板 |
| 已用 IC / 零件： | AS1100 |
AS1100
Datasheet - A p p l i c a t i o n I n f o r m a t i o n
9 Application Information
9.1 Supply Bypassing and Wiring
In order to achieve optimal performance the AS1100 shall be placed very close to the LED display to minimize effects of electromagnetic
interference and wiring inductance. Furthermore, it is recommended to connect a 10 F electrolytic and a 0.1 F ceramic capacitor between V DD
and GND to avoid power supply ripple. Also, both GNDs must be connected to ground.
9.2 Selecting R SET Resistor and Using External Drivers
The current through the segments is controlled via the external resistor R SET . Segment current is about 100 times the current in ISET. The right
values for ISET are given in Table 15 . The maximum current the AS1100 can drive is 40mA. If higher currents are needed, external drivers must
be used. In that case it is no longer necessary that the AS1100 drives high currents. A recommended value for R SET is 47k ? . In cases that the
AS1100 only drives few digits, Table 12 specifies the maximum currents and R SET must be set accordingly. Refer to absolute maximum ratings
to calculate acceptable limits for ambient temperature, segment current, and the LED forward-voltage drop.
Table 15. R SET vs. Segment Current and LED Forward Voltage
I SEG (mA)
40
30
20
10
1.5
12.2k ?
17.8k ?
29.8k ?
66.7k ?
2.0
11.8k ?
17.1k ?
28.0k ?
63.7k ?
V LED (V)
2.5
11.0k ?
15.8k ?
25.9k ?
59.3k ?
3.0
10.6k ?
15.0k ?
24.5k ?
55.4k ?
3.5
9.69k ?
14.0k ?
22.6k ?
51.2k ?
9.3 8x8 LED Dot Matrix Driver
The example in Figure 7 uses the AS1100 to drive an 8x8 LED dot matrix. The LED columns have common cathode and are connected to the
DIG0-7 outputs. The rows are connected to the segment drivers. Each of the 64 LEDs can be addressed separately. The columns are selected
via the digits as shown in Table 5 . The decode mode register (0xX9) has to be programmed to ‘00000000’ as stated in Table 4. The single LEDs
in a column can be addressed as stated in Table 9 , where D0 corresponds to segment G and D7 corresponds to segment DP.
Note: For a multiple-digit dot matrix, multiple AS1100 devices must be cascaded.
Figure 7. Application Example as LED Dot Matrix Driver
SEG G
SEG F
SEG E
SEG D
SEG C
SEG B
SEG A
SEG DP
DIG 0
DIG 7
SEG G
SEG F
SEG E
SEG D
SEG C
SEG B
SEG A
SEG DP
DIG 0
DIG 7
SEG A:G
SEG DP
DIG0:7
DOUT
VDD
24
19
SEG A:G
SEG DP
DIG0:7
P
1
12
DIN
LOAD
AS1100
9.53k ?
1
DIN
VDD
19
13
9
CLK
GND
GND
4
ISET
18
12
13
9
LOAD
CLK
GND
AS1100
ISET
18
9.53k ?
GND
4
www.austriamicrosystems.com/LED-Driver-ICs/AS1100
Revision 1.37
11 - 16
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PDF描述 |
|---|---|
| AS1107 DB | BOARD DEMO AS1107 |
| AS1109 EB | BOARD EVAL AS1109 |
| AS1110 EB | BOARD EVAL AS1110 |
| AS1112 EB | BOARD EVAL AS1112 |
| AS1115 DB-YELLOW | BOARD DEMO AS1115 YELLOW |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1100K04 | 制造商:MISCELLANEOUS 功能描述: |
| AS1100K06 | 制造商:MISCELLANEOUS 功能描述: |
| AS1100PE | 功能描述:IC LED 8-DIGIT DRIVER 24-PDIP RoHS:是 类别:集成电路 (IC) >> PMIC - 显示器驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 显示器类型:真空荧光 (VF) 配置:5 x 7（矩阵） 接口:串行 数字或字符:- 电流 - 电源:3.5mA 电源电压:2.7 V ~ 3.6 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-SSOP（0.154"，3.90mm 宽） 供应商设备封装:16-QSOP 包装:带卷 (TR) |
| AS1100PE-Z | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:Serially Interfaced, 8-Digit LED Driver |
| AS1100PL | 功能描述:IC LED 8-DIGIT DRIVER 24-PDIP RoHS:是 类别:集成电路 (IC) >> PMIC - 显示器驱动器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 显示器类型:真空荧光 (VF) 配置:5 x 7（矩阵） 接口:串行 数字或字符:- 电流 - 电源:3.5mA 电源电压:2.7 V ~ 3.6 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-SSOP（0.154"，3.90mm 宽） 供应商设备封装:16-QSOP 包装:带卷 (TR) |
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