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AS1109 데이터시트 PDF




AMSCO에서 제조한 전자 부품 AS1109은 전자 산업 및 응용 분야에서
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부품번호 AS1109 기능
기능 Constant-Current 8-Bit LED Driver with Diagnostics
제조업체 AMSCO
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AS1109 데이터시트, 핀배열, 회로
www.DataSheet4U.com
austriamicrosystems
AS1109
Preliminary
Constant-Current, 8-Bit LED Driver with Diagnostics ProductBrief
1 General Description
2 Key Features
The AS1109 was designed to drive up to 8 LEDs
through a fast serial interface and features 8 output con-
stant current drivers and an on-chip diagnostic read-
back function.
The high clock-frequency (up to 30MHz), adjustable out-
put current, and flexible serial interface makes the
device perfectly suited for high-volume transmission
applications.
! 8 Constant-Current Output Channels
! Excellent Output Current Accuracy
- Between Channels: <±2%
- Between AS1109 Devices: <±2%
! Output Current Per Channel: 0.5 to 100mA
! Controlled In-Rush Current
Output current is adjustable (up to 100mA/channel)
using an external resistor (REXT).
! Over-Temperature, Open-LED, Shorted-LED
Diagnostics Functions
The serial interface includes an integrated shift register
with Schmitt trigger inputs allows display data to be
shifted-in. Additionally, an internal data register stores
the currently displayed data.
The device features integrated diagnostics for over-
temperature, open-LED, and shorted-LED conditions.
Integrated shift registers store global fault status infor-
mation during load as well as the detailed temperature/
open-LED/shorted-LED diagnostics results.
! Low-Current Test Mode
! Global Fault Monitoring
! Low Shutdown Mode Current: 10µA
! Fast Serial Interface: 30MHz
! Cascaded Configuration
! Extremely Fast Output Drivers Suitable for PWM
The AS1109 also features a low-current diagnostDicataSheet4U!.c1o6m-pin SOIC-150 and 16-pin SSOP Package
mode to minimize display flicker during fault testing.
The AS1109 is available in a 16-pin SOIC-150 package
and the 16-pin SSOP Package.
3 Applications
The device is ideal for fixed- or slow-rolling displays
using static or multiplexed LED matrix and dimming
functions, large LED matrix displays, mixed LED display
and switch monitoring, displays in elevators, public
transports (underground, trains, buses, taxis, airplanes,
etc.), large displays in stadiums and public areas, price
indicators in retail stores, promotional panels, bar-graph
displays, industrial controller displays, white good pan-
els, emergency light indicators, and traffic signs.
Figure 1. Main Diagram and Pin Assignments
+VLED
OUTN0 OUTN1 OUTN2 OUTN3 OUTN4 OUTN5 OUTN6 OUTN7
SDI AS1109 SDO
CLK
LD
OEN
REXT
GND
VDD
GND 1
SDI 2
CLK 3
LD 4
OUTN0 5
OUTN1 6
OUTN2 7
OUTN3 8
AS1109
16 VDD
15 REXT
14 SDO
13 OEN
12 OUTN7
11 OUTN6
10 OUTN5
9 OUTN4
DataShee
DataSheet4U.com
www.austriamicrosystems.com
DataSheet4 U .com
Revision 1.05
1-2





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