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ADC081500EVAL Datasheet(PDF) 8 Page - National Semiconductor (TI) |
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ADC081500EVAL Datasheet(HTML) 8 Page - National Semiconductor (TI) |
8 / 32 page Converter Electrical Characteristics (Continued) The following specifications apply after calibration for V A =VDR = +1.9VDC, OutV = 1.9V, VIN (a.c. coupled) Full Scale Range = differential 870mV P-P,CL = 10 pF, Differential (a.c. coupled) sinewave input clock, fCLK = 1.5 GHz at 0.5VP-P with 50% duty cycle, V BG = Floating, Normal Control Mode, Single Data Rate Mode, REXT = 3300 Ω ±0.1%, Analog Signal Source Impedance = 100 Ω Differential. Boldface limits apply for T A =TMIN to TMAX. All other limits TA = 25˚C, unless otherwise noted. (Notes 6, 7) Symbol Parameter Conditions Typical (Note 8) Limits (Note 8) Units (Limits) DYNAMIC CONVERTER CHARACTERISTICS THD Total Harmonic Distortion f IN = 373 MHz, VIN = FSR − 0.5 dB -54.5 -47 dB (max) f IN = 748 MHz, VIN = FSR − 0.5 dB -53 dB (max) 2nd Harm Second Harmonic Distortion f IN = 373 MHz, VIN = FSR − 0.5 dB −60 dB f IN = 748 MHz, VIN = FSR − 0.5 dB -57 dB 3rd Harm Third Harmonic Distortion f IN = 373 MHz, VIN = FSR − 0.5 dB −62 dB f IN = 748 MHz, VIN = FSR − 0.5 dB -65 dB SFDR Spurious-Free dynamic Range f IN = 373 MHz, VIN = FSR − 0.5 dB 56 48.5 dB (min) f IN = 748 MHz, VIN = FSR − 0.5 dB 53 dB (min) IMD Intermodulation Distortion f IN1 = 321 MHz, VIN =FSR−7dB f IN2 = 326 MHz, VIN =FSR−7dB -50 dB Out of Range Output Code (In addition to OR Output high) (V IN+)−(VIN−) > + Full Scale 255 (V IN+)−(VIN−) < − Full Scale 0 ANALOG INPUT AND REFERENCE CHARACTERISTICS V IN Full Scale Analog Differential Input Range FSR pin 14 Low 650 570 mV P-P (min) 730 mV P-P (max) FSR pin 14 High 870 790 mV P-P (min) 950 mV P-P (max) V CMI Analog Input Common Mode Voltage V CMO V CMO −50 V CMO +50 mV (min) mV (max) C IN Analog Input Capacitance (Notes 10, 11) Differential 0.02 pF Each input pin to ground 1.6 pF R IN Differential Input Resistance 100 94 Ω (min) 106 Ω (max) ANALOG OUTPUT CHARACTERISTICS V CMO Common Mode Output Voltage 1.26 0.95 1.45 V (min) V (max) TC V CMO Common Mode Output Voltage Temperature Coefficient T A = −40˚C to +85˚C 118 ppm/˚C V CMO_LVL V CMO input threshold to set DC Coupling mode V A = 1.8V 0.60 V V A = 2.0V 0.66 V C LOAD V CMO Maximum V CMO load Capacitance 80 pF V BG Bandgap Reference Output Voltage I BG = ±100 µA 1.26 1.20 1.33 V (min) V (max) TC V BG Bandgap Reference Voltage Temperature Coefficient T A = −40˚C to +85˚C, I BG = ±100 µA 28 ppm/˚C C LOAD V BG Maximum Bandgap Reference load Capacitance 80 pF TEMPERATURE DIODE CHARACTERISTICS ∆V BE Temperature Diode Voltage 192 µA vs. 12 µA, T J = 25˚C 71.23 mV 192 µA vs. 12 µA, T J = 85˚C 85.54 mV www.national.com 8 |
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