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AD876JR Datasheet(PDF) 3 Page - Analog Devices |
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AD876JR Datasheet(HTML) 3 Page - Analog Devices |
3 / 16 page AD876 REV. B –3– DIGITAL SPECIFICATIONS AD876 Parameter Symbol DRVDD Min Typ Max Units LOGIC INPUT High Level Input Voltage VIH 3.0 2.4 V 5.0 4.0 V 5.25 4.2 V Low Level Input Voltage VIL 3.0 0.6 V 5.0 1.0 V 5.25 1.05 V High Level Input Current IIH 5.0 –10 +10 µA Low Level Input Current IIL 5.0 –50 +50 µA Low Level Input Current (CLK Only) IIL 5.0 –10 +10 µA Input Capacitance CIN 5pF LOGIC OUTPUTS High Level Output Voltage VOH (IOH = 50 µA) 3.0 2.4 V 5.0 3.8 V (IOH = 0.5 mA) 5.0 2.4 V Low Level Output Voltage VOL (IOL = 50 µA) 3.6 0.7 V 5.25 1.05 V (IOL = 0.6 mA) 5.25 0.4 V Output Capacitance COUT 5pF Output Leakage Current IOZ –10 10 µA Specifications subject to change without notice. TIMING SPECIFICATIONS Symbol Min Typ Max Units Maximum Conversion Rate1 20 MHz Clock Period tC 50 ns Clock High tCH 23 25 ns Clock Low tCL 23 25 ns Output Delay tOD 10 20 ns Pipeline Delay (Latency) 3.5 Clock Cycles Aperture Delay Time 4 ns Aperture Jitter 22 ps NOTE 1Conversion rate is operational down to 10 kHz without degradation in specified performance. OUT DATA N-4 DATA N-3 DATA N-2 DATA N-1 DATA N SAMPLE N SAMPLE N+1 SAMPLE N+2 AIN CLK tCL tCH tC tOD Figure 1. Timing Diagram (TMIN to TMAX with AVDD = +5.0 V, DVDD = +5.0 V, DRVDD = +3.3 V, VREFT = +4.0 V, VREFB = +2.0 V, fCLOCK = 20 MSPS, CL = 20 pF unless otherwise noted) |
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