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AS1920 数据表(PDF) 4 Page - ams AG |
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AS1920 数据表(HTML) 4 Page - ams AG |
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4 / 14 page ![]() www.austriamicrosystems.com Revision 1.00 4 - 14 AS1920/AS1922 Datasheet - 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 6 Electrical Characteristics VCC18 = 1.8V, VCC3 = 3V, VCCA = VCC3, TAMB = -40 to +85ºC (unless otherwise specified). Table 4. Electrical Characteristics Symbol Parameter Conditions Min Typ Max Unit VRT18 Reset Threshold VCC18 1.653 1.683 1.713 V VRT3 Reset Threshold VCC3 2.763 2.805 2.847 V VRTA Reset Threshold VCCA 0.982 1.00 1.018 V VCC3, VCC18 Operating Voltage RESETN in Correct Logic State 1 3.3 V IVCC18 VCC18 Supply Current VCC18 < VCC3, VCC18 = 1.8V 0.7 2 µA IVCC3 VCC3 Supply Current VCC18 < VCC3, VCC3 = 3V 6.2 15 µA IVCCA 1 1. Guaranteed by design. VCCA Input Current VCCA = 1V -15 0 15 nA IOUT Open-Drain RESETN Output Current Reset Not Asserted, Forced to 0V 2 4 13 µA ILEAK Open-Drain RESETN Output Leakage Current Reset Not Asserted, RESETN Forced to 5.5V, TAMB = 25ºC -0.1 0.1 µA tRST Reset Pulse Width RESETN Low, TAMB = 25ºC 2 2. Measured from the time (t1) when the input passes through the input threshold voltage (VRTX) to the time (t2) when RESETN passes through 1.5V. 140 200 280 ms tUV VCC Undervoltage Detect to RESETN VCC18, VCC3, or VCCA < Reset Threshold by > 1% 2 TAMB = 25ºC 130 µs VOL Output Voltage Low, RESETN ISINK = 2.5mA, VCC3 = 3V, VCC18 = 0V 0.15 0.4 V ISINK = 100µA, VCC3 = 1V, VCC18 = 0V 0.05 0.3 ISINK = 100µA, VCC3 = 0V, VCC18 = 1V 0.05 0.3 ISINK = 100µA, VCC3 = 1V, VCC18 = 1V 0.05 0.3 VOH Output Voltage High, RESETN ISOURCE = 1µA (AS1922-xx) VCC3 - 1 VCC3 - 0.65 V |
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