AS1113-BQFT austriamicrosystems, AS1113-BQFT Datasheet
AS1113-BQFT
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AS1113-BQFT Summary of contents
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... heet AS1113 50mA, 16-Channel LED Driv General Description The AS1113 is designed to drive LEDs through a fast serial interface and features 16 output constant current drivers and an on-chip diagnostic read-back function. The high clock-frequency (up to 50MHz), adjustable out- put current, and flexible serial interface makes the device perfectly suited for high-volume transmission applications ...
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... Shutdown Mode .................................................................................................................................................... 16 9 Application Information ......................................................................................................................... 17 Error Detection ..................................................................................................................................................... 17 Error Detection On-The-Fly ........................................................................................................................... 17 Error Detection with Low-Current Diagnosis Mode ....................................................................................... 17 Cascading Devices ............................................................................................................................................... 18 Constant Current .................................................................................................................................................. 19 Adjusting Output Current ...................................................................................................................................... 19 Package Power Dissipation .................................................................................................................................. 19 Delayed Outputs ................................................................................................................................................... 19 Switching-Noise Reduction .................................................................................................................................. 19 Load Supply Voltage ............................................................................................................................................. 19 10 Package Drawings and Markings ....................................................................................................... 21 11 Ordering Information ........................................................................................................................... 23 www.austriamicrosystems.com/LED-Driver-ICs/AS1113 Revision 1. ...
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... Ground Serial Data Input Serial Data Clock. The rising edge of the CLK signal is used to clock data into and out of the AS1113 shift register. In error mode, the rising edge of the CLK signal is used to switch error modes. Serial Data Load Output Current Drivers. These pins are used as LED drivers or for input sense for diagnostic modes ...
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... Output Voltage GND Pin Current Thermal Resistance Θ JA Ambient Temperature Storage Temperature Humidity Digital Outputs Electrostatic Discharge All Other Pins Latch-Up Immunity Package Body Temperature www.austriamicrosystems.com/LED-Driver-ICs/AS1113 may cause permanent damage to the device. These are stress ratings only, Min Max Units -0.4 V +0.4 -0 ...
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... IN(DOWN) V Error Detection Threshold Voltage THL V Error Detection Threshold Voltage THH T Overtemperature Threshold Flag OV1 I DD(OFF)0 I Off DD(OFF)1 Supply I DD(OFF)2 Current I DD(ON DD(ON)2 www.austriamicrosystems.com/LED-Driver-ICs/AS1113 Condition Min 3.0 OUTN0:15 OUTN0:15 0.5 SDO -1.0 SDO 1.0 0 CLK, OEN, LD, SDI -0.3 OEN = 15. +1.0mA -1.0mA OH 0 ...
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... Operation) t Low-Current Test Mode P3,ON Propagation Delay Time t P3,OFF External Resistor Reaction Time t REXT2,1 External Resistor Reaction Time t REXT2 multiple AS1113 devices are cascaded and t transfer between two cascaded LED drivers. www.austriamicrosystems.com/LED-Driver-ICs/AS1113 , V = GND 372Ω 4.0V EXT LOAD = 5V DD Conditions ...
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... AMB 60 50 REXT = 376Ω 40 REXT = 470Ω 30 REXT = 627Ω 20 REXT = 940Ω (V) DS www.austriamicrosystems.com/LED-Driver-ICs/AS1113 Figure 4. Relative Output Current Error vs. V Iout/Iout@VDD= 1.5 1 0.5 REXT = 744Ω; VDS = 0.5V 0 -0.5 REXT = 372Ω; VDS = 0. 3.5 10000 Figure 6. Output Current vs. V ...
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... AS1113 Datasheet - Detailed Description The AS1113 is designed to drive LEDs through a fast serial interface and 16 constant-current output drivers. Furthermore, the AS1113 provides diagnostics for detecting open- or shorted-LEDs, as well as over-temperature con- ditions for LED display systems, especially LED traffic sign applications. The AS1113 contains an 16-bit shift register and an 16-bit data register, which convert serial input data into parallel out- put format ...
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... This section contains timing diagrams referenced in other sections of this data sheet. Figure 8. Normal Mode Timing Diagram t W(CLK) 50% CLK t t SU(D) H(D) SDI 50% SDO LD t SU(L) OEN OUTNx Figure 9. Output Delay Timing Diagram OEN OUTN0 OUTN1 OUTN15 www.austriamicrosystems.com/LED-Driver-ICs/AS1113 50% 50% 50% 50 W(L) 50% 50% t H(L) OEN Low = Output Enabled 50 W(OE) 50 90% ...
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... LD OEN OUTN0 OUTN1 OUTN2 OUTN3 OUTN4 OUTN5 OUTN6 OUTN7 OUTN8 OUTN9 OUTN10 OUTN11 OUTN12 OUTN13 OUTN14 OUTN15 www.austriamicrosystems.com/LED-Driver-ICs/AS1113 16 CLK Pulses t SU(D) Data Bit Data Bit Data Bit Data Bit Data Bit Old Data Old Data Old Data Old Data Old Data ...
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... LEDs that are switched on during test time. To switch between error-detection modes clock pulses are needed (see Table Note: To test all LEDs, a test pattern that turns on all LEDs must be input to the AS1113. Global Error Mode Global error mode is entered when error-detection mode is started. Clock pulses during this period are used to select ...
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... AS1113 Datasheet - there are multiple AS1113s in a chain, the error flag will be gated through all devices. To get a valid result at the end of the chain, a logic 1 must be applied to the SDI input of the first device of the chain. If one device produces an error this error will show up after n*t ...
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... AS1113s in a chain) via pin SDO. At the same time new data can be written into the shift register, which is loaded on the next rising edge of pin LD. This pattern is shown at the output drivers, at the falling edge of OEN. ...
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... Timing Diagrams on page Detailed Open-LED Error Report Example Consider a case where three AS1113s are cascaded in one chain indicates a LED is on indicates a LED is off, and an X indicates an open LED. The open-LED test is only applied to LEDs that are turned on. This test is used with a test pattern where all LEDs are on at test time ...
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... For detailed timing information see Timing Diagrams on page Detailed Shorted-LED Error Report Example Consider a case where three AS1113s are cascaded in one chain indicates a LED is on indicates a LED is off, and an X indicates a shorted LED. This test is used on-the-fly. IC1:[11111XX111111111] IC2:[1111111111111111] IC3:[X100011111111111] IC1 has two shorted LEDs which are switched on, IC3 has one shorted LED switched off due to input ...
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... To disable shutdown mode a 1 must be placed at SDI after the 3rd clock pulse. The shutdown/wakeup information will be latched through if multiple AS1113 devices are in a chain. At the rising edge of the 4th clock pulse the shutdown bit will be read out and the AS1113 will shutdown or wakeup. ...
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... Current Error Detection with Low-Current Diagnosis Mode This unique feature of the AS1113 uses an internal all 1s test pattern for a flicker free diagnosis of all LEDs. This error detection mode can be started at the end of each input cycle Figure 19. Low-Current Diagnosis Mode with Internal All 1s Test Pattern – 64 Cascaded AS1113s ...
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... Cascading Devices To cascade multiple AS1113 devices, pin SDO must be connected to pin SDI of the next AS1113 each rising edge of CLK the LSB of the shift register will be written into the shift register SDI of the next AS1113 in the chain. Note: When n*AS1113 devices are in one chain, n*16 clock pulses are needed to latch-in the input data. ...
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... Switching-Noise Reduction LED drivers are frequently used in switch-mode applications which normally exhibit switching noise due to parasitic inductance on the PCB. Load Supply Voltage Considering the package power dissipation limits (see EQ 4:6), the AS1113 should be operated within the range 0.4 to 1.0V. DS For example ...
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... AS1113 Datasheet - Figure 22. Voltage Reducer using Resistor (Left) and Zener Diode (Right) Voltage Supply } V DROP V LED AS1113 www.austriamicrosystems.com/LED-Driver-ICs/AS1113 Voltage Supply { V DROP AS1113 Revision 1.04 V LED ...
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... AS1113 Datasheet - Package Drawings and Markings The AS1113 is available in a 28-pin QFN (5x5mm) package and a 24-pin SSOP package. Figure 23. 28-pin QFN (5x5mm) Packagee D INDEX AREA D/2 (D/2 xE/2) 4 aaa C 2x TOP VIEW Datum Terminal Tip ODD TERMINAL SIDE Symbol Min Typ A 0 ...
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... AS1113 Datasheet - Figure 24. 24-pin SSOP Package Symbol Min Max A 1.35 1.75 A1 0.10 0.25 A2 1.37 1.57 b 0.20 0.30 C 0.19 0.25 D 8.55 8.74 E 5.79 6.20 E1 3.81 3.99 e 0.635 BSC h 0.22 0.49 L 0.40 1.27 θ 0º 8º www.austriamicrosystems.com/LED-Driver-ICs/AS1113 Revision 1. ...
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... AS1113-BSST 50mA, 16-Channel LED Driver with Diagnostics AS1113-BQFR 50mA, 16-Channel LED Driver with Diagnostics AS1113-BQFT 50mA, 16-Channel LED Driver with Diagnostics Note: All products are RoHS compliant and Pb-free. Buy our products or get free samples online at ICdirect: For further information and requests, please contact us or find your local distributor at www ...
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... No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information Headquarters austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 Fax: +43 (0) 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com/contact www.austriamicrosystems.com/LED-Driver-ICs/AS1113 Revision 1. ...