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LM9800 Datasheet(PDF) 4 Page - National Semiconductor (TI) |
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LM9800 Datasheet(HTML) 4 Page - National Semiconductor (TI) |
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4 / 34 page ![]() DC and Logic Electrical Characteristics The following specifications apply for AGND = DGND = DGND (I/O) = 0V, VA = VD = +5.0VDC,VD(I/O) = +5.0 or +3.0VDC, REF IN = +1.225V DC,fMCLK = 20MHz, Rs = 25Ω. Boldface limits apply for TA = TJ = TMIN to TMAX; all other limits TA = TJ = 25˚C. Symbol Parameter Conditions Typical Limits Units (Note 9) (Note 10) (Limits) CD0–CD6, MCLK, SYNC, SDI, SCLK, CS , RD Digital Input Characteristics V IN(1) Logical “1” Input Voltage V D(I/O) = 5.25V 2.0 V (min) V D(I/O) = 3.6V 2.0 V (min) V IN(0) Logical “0” Input Voltage V D(I/O) = 4.75V 0.8 V (max) V D(I/O) = 2.7V 0.7 V (max) I IN Input Leakage Current V IN = VD 0.1 µA V IN = DGND −0.1 µA C IN Input Capacitance 5 pF DD0–DD7, EOC , CCLK, SDO Digital Output Characteristics V OUT(1) Logical “1” Output Voltage V D(I/O) = 4.75V, IOUT = −360 µA 2.4 V (min) V D(I/O) = 4.75V, IOUT = −10 µA 4.4 V (min) V D(I/O) = 2.7V, IOUT = −360 µA 2.1 V (min) V D(I/O) = 2.7V, IOUT = −10 µA 2.5 V (min) V OUT(0) Logical “0” Output Voltage V D(I/O) = 5.25V, IOUT = 1.6 mA 0.4 V (max) V D(I/O) = 3.6V, IOUT = 1.6 mA 0.4 V (max) I OUT TRI-STATE® Output Current V OUT = DGND 0.1 µA (DD0–DD7 only) V OUT = VD −0.1 µA C OUT TRI-STATE Output Capacitance 5 pF φ1, φ2, RS, TR Digital Output Characteristics V OUT(1) Logical “1” Output Voltage V D = 4.75V, IOUT = −360 µA 2.4 V (min) V D = 4.75V, IOUT = −10 µA 4.4 V (min) V OUT(0) Logical “0” Output Voltage V D = 5.25V, IOUT = 1.6 mA 0.4 V (max) Power Supply Characteristics I A Analog Supply Current Operating 32 42 mA (max) Standby 20 µA I D Digital Supply Current Operating 6 10 mA (max) Standby 4 mA I D(I/O) Digital I/O Supply Current Operating, V D(I/O) = 5.0V 3.5 6 mA (max) Operating, V D(I/O) = 3.0V 1.6 2 mA (max) Standby, V D(I/O) = 5.0V or 3.0V 0.5 mA AC Electrical Characteristics, MCLK Independent The following specifications apply for AGND = DGND = DGND (I/O) = 0V, VA = VD = VD(I/O) = +5.0VDC, REF IN = +1.225VDC, f MCLK = 20MHz, tMCLK = 1/fMCLK,tr = tf = 5ns, Rs = 25Ω,CL (databus loading) = 50 pF/pin. Boldface limits apply for TA = T J = TMIN to TMAX; all other limits TA = TJ = 25˚C. Symbol Parameter Conditions Typical Limits Units (Note 9) (Note 10) (Limits) f MCLK Maximum MCLK Frequency 20 MHz (min) Minimum MCLK Frequency 5 MHz (max) MCLK Duty Cycle 30 40 % (min) 70 60 % (max) t A SYNC setup of MCLK 5 10 ns (min) t CDSETUP Correction Data valid to CLK Setup 14 20 ns (min) t CDHOLD Correction Data valid to CLK Hold −12 0 ns (min) t D1H,tD0H RD High to DD0–DD7 TRI-STATE 7 15 ns (max) www.national.com 4 |
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