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ADC08500 Fiches technique(PDF) 10 Page - Texas Instruments |
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ADC08500 Fiches technique(HTML) 10 Page - Texas Instruments |
10 / 46 page ADC08500 SNAS373E – MAY 2007 – REVISED APRIL 2013 www.ti.com Converter Electrical Characteristics (continued) The following specifications apply after calibration for VA = VDR = +1.9VDC, OutV = 1.9V, VIN FSR (a.c. coupled) = differential 870 mVP-P, CL = 10 pF, Differential, a.c. coupled Sinewave Input Clock, fCLK = 500 MHz at 0.5VP-P with 50% duty cycle, VBG = Floating, Non-Extended Control Mode, SDR Mode, REXT = 3300Ω ±0.1%, Analog Signal Source Impedance = 100Ω Differential. Boldface limits apply for TA = TMIN to TMAX. All other limits TA = 25°C, unless otherwise noted. See (1)(2) Units Symbol Parameter Conditions Typical (3) Limits (3) (Limits) fIN = 50 MHz, VIN = FSR − 0.5 dB −60 dB 2nd Harm Second Harmonic Distortion fIN = 124 MHz, VIN = FSR − 0.5 dB −60 dB fIN = 248 MHz, VIN = FSR − 0.5 dB −60 dB fIN = 50 MHz, VIN = FSR − 0.5 dB −65 dB 3rd Harm Third Harmonic Distortion fIN = 124 MHz, VIN = FSR − 0.5 dB −65 dB fIN = 248 MHz, VIN = FSR − 0.5 dB −65 dB fIN = 50 MHz, VIN = FSR − 0.5 dB 55 dB SFDR Spurious-Free dynamic Range fIN = 124 MHz, VIN = FSR − 0.5 dB 56 47.5 dB (min) fIN = 248 MHz, VIN = FSR − 0.5 dB 56 47.5 dB (min) fIN1 = 121 MHz, VIN = FSR − 7 dB IMD Intermodulation Distortion -50 dB fIN2 = 126 MHz, VIN = FSR − 7 dB (VIN+) − (VIN−) > + Full Scale 255 Out of Range Output Code (In addition to OR Output high) (VIN+) − (VIN−) < − Full Scale 0 ANALOG INPUT AND REFERENCE CHARACTERISTICS 570 mVP-P (min) FSR pin 14 Low 650 730 mVP-P (max) Full Scale Analog Differential Input VIN Range 790 mVP-P (min) FSR pin 14 High 870 950 mVP-P (max) VCMO − 50 mV (min) VCMI Analog Input Common Mode Voltage VCMO VCMO + 50 mV (max) Differential 0.02 pF Analog Input Capacitance, Normal CIN operation (5)(6) Each input pin to ground 1.6 pF 94 Ω (min) RIN Differential Input Resistance 100 106 Ω (max) ANALOG OUTPUT CHARACTERISTICS 0.95 V (min) VCMO Common Mode Output Voltage ICMO = ±100 µA 1.26 1.45 V (max) VA = 1.8V 0.60 V VCMO input threshold to set DC VCMO_LVL Coupling mode VA = 2.0V 0.66 V Common Mode Output Voltage TC VCMO TA = −40°C to +85°C 118 ppm/°C Temperature Coefficient CLOAD Maximum VCMO load Capacitance 80 pF VCMO 1.20 V (min) VBG Bandgap Reference Output Voltage IBG = ±100 µA 1.26 1.33 V (max) Bandgap Reference Voltage TA = −40°C to +85°C TC VBG 28 ppm/°C Temperature Coefficient IBG = ±100 µA Maximum Bandgap Reference Load CLOAD VBG 80 pF Capacitance TEMPERATURE DIODE CHARACTERISTICS 192 µA vs. 12 µA, 71.23 mV TJ = 25°C ΔVBE Temperature Diode Voltage 192 µA vs. 12 µA, 85.54 mV TJ = 85°C (5) The analog and clock input capacitances are die capacitances only. Additional package capacitances of 0.65 pF differential and 0.95 pF each pin to ground are isolated from the die capacitances by lead and bond wire inductances. (6) This parameter is specified by design and is not tested in production. 10 Submit Documentation Feedback Copyright © 2007–2013, Texas Instruments Incorporated Product Folder Links: ADC08500 |
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