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AS1109-BSSU Datasheet(PDF) 6 Page - ams AG |
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AS1109-BSSU Datasheet(HTML) 6 Page - ams AG |
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6 / 26 page  www.austriamicrosystems.com Revision 1.18 6 - 26 AS1109 Data Sheet - E l e c t r i c a l C h a r a c t e r i s t i c s Switching Characteristics VDD = 3.0 to 5.5V, VDS = 0.8V, VIH = VDD, VIL = GND, REXT = 372 Ω, VLOAD = 4.0V, RLOAD = 64Ω, CLOAD = 10pF; guar- anteed by design. * If multiple AS1109 devices are cascaded and tr or tf is large, it may be critical to achieve the timing required for data transfer between two cascaded LED drivers. IDD(OFF)0 Supply Current Off REXT = Open‚ OUTN0:7 = Off 1.3 2 mA IDD(OFF)1 REXT = 744 Ω‚ OUTN0:7 = Off 3.0 3.68 IDD(OFF)2 REXT = 372 Ω‚ OUTN0:7 = Off 4.7 5.37 IDD(OFF)3 REXT = 186 Ω, OUTN0:7 = Off 8.1 8.73 IDD(ON)1 On REXT = 744 Ω‚ OUTN0:7 = On 4.5 5 IDD(ON)2 REXT = 372 Ω‚ OUTN0:7 = On 7.5 8 IDD(ON)3 REXT = 186 Ω‚ OUTN0:7 = On 13.7 15 Table 4. Switching Characteristics Symbol Parameter Conditions Min Typ Max Unit tP1 Propagation Delay Time CLK - SDO 5 10 ns tP2 Propagation Delay Time (Without Staggered Output Delay) LD - OUTNn 100 200 tP3 OEN - OUTNn 100 200 tP4 Propagation Delay Time 10 ns tW(CLK) Pulse Width CLK 15 ns tW(L) LD 15 tW(OE) OEN (@IOUT < 60mA) 200 tR * Maximum CLK Rise Time 500 ns tF * Maximum CLK Fall Time 500 ns tOR Output Rise Time of VOUT (Turn Off) 100 200 ns tOF Output Fall Time of VOUT (Turn On) 100 300 ns tSU(D) Setup Time for SDI 5 ns tH(D) Hold Time for SDI 5 ns tSU(L) Setup Time for LD 5 ns tH(L) Hold Time for LD 5 ns tTESTING Minimum OEN Time for Error Detection 2000 ns tSTAG Staggered Output Delay 20 40 ns tSU(OE) Output Enable Setup Time 20 ns tGSW(ERROR) Global Error Switching Setup Time 10 ns tSU(ERROR) Global Error Detection Setup Time 10 ns tP(I/O) Propagation Delay Global Error Flag 5 ns tSW(ERROR) Switching Time Global Error Flag 10 ns fCLK Maximum Clock Frequency (Cascade Operation) 30 50 MHz tP3,ON Low-Current Test Mode Propagation Delay Time Turn ON 3 5 µs tTP3,OFF Turn OFF 0.05 0.1 µs tREXT2,1 External Resistor Reaction Time Change from REXT1 = 372 Ω, IOUT1 = 50.52mA to REXT2 = 37.2k Ω, IOUT2 < 1mA 0.5 1 µs tREXT2,1 External Resistor Reaction Time Change from REXT1 = 37.2k Ω, IOUT1 = 0.5mA to REXT2 = 372 Ω, IOUT2 > 25mA 0.5 1 µs Table 3. Electrical Characteristics (Continued) Symbol Parameter Condition Min Typ Max Unit |
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