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ADC10065 Datasheet(PDF) 8 Page - Texas Instruments |
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ADC10065 Datasheet(HTML) 8 Page - Texas Instruments |
8 / 27 page ADC10065 SNAS225H – JULY 2003 – REVISED APRIL 2013 www.ti.com AC Electrical Characteristics (continued) Unless otherwise specified, the following specifications apply for VSSA = VSSIO = 0V, VDDA = +3.0V, VDDIO = +2.5V, VIN = 2 VP-P, STBY = 0V, VREF = 1.20V (External), fCLK = 65 MHz, 50% Duty Cycle, CL = 10 pF/pin. Boldface limits apply for TA = TMIN to TMAX: all other limits TA = 25°C. (1) Parameter Test Conditions Min (2) Typ (2) Max (2) Units T = 25°C 2 3.4 5 ns Data Output Delay after a Rising Clock tOD Edge 1 6 ns tAD Aperture Delay 1 ns tAJ Aperture Jitter 2 ps (RMS) Differential VIN step from ±3V Over Range Recovery Time to 0V to get accurate 1 Clock Cycle conversion tSTBY Standby Mode Exit Cycle 20 Cycles Figure 2. Specification Definitions APERTURE DELAY is the time after the rising edge of the clock to when the input signal is acquired or held for conversion. APERTURE JITTER (APERTURE UNCERTAINTY) is the variation in aperture delay from sample to sample. Aperture jitter manifests itself as noise in the output. COMMON MODE VOLTAGE (VCM) is the d.c. potential present at both signal inputs to the ADC. CONVERSION LATENCY See PIPELINE DELAY. DIFFERENTIAL NON-LINEARITY (DNL) is the measure of the maximum deviation from the ideal step size of 1 LSB. DUTY CYCLE is the ratio of the time that a repetitive digital waveform is high to the total time of one period. The specification here refers to the ADC clock input signal. EFFECTIVE NUMBER OF BITS (ENOB, or EFFECTIVE BITS) is another method of specifying Signal-to-Noise and Distortion or SINAD. ENOB is defined as (SINAD - 1.76) / 6.02 and states that the converter is equivalent to a perfect ADC of this (ENOB) number of bits. FULL POWER BANDWIDTH is a measure of the frequency at which the reconstructed output fundamental drops 3 dB below its low frequency value for a full scale input. GAIN ERROR is the deviation from the ideal slope of the transfer function. It can be calculated as: Gain Error = Positive Full-Scale Error − Negative Full-Scale Error (1) INTEGRAL NON LINEARITY (INL) is a measure of the deviation of each individual code from a line drawn from negative full scale through positive full scale. The deviation of any given code from this straight line is measured from the center of that code value. MISSING CODES are those output codes that will never appear at the ADC outputs. The ADC10065 is specified not to have any missing codes. NEGATIVE FULL SCALE ERROR is the difference between the input voltage (VIN + − V IN −) just causing a transition from negative full scale to the first code and its ideal value of 0.5 LSB. 8 Submit Documentation Feedback Copyright © 2003–2013, Texas Instruments Incorporated Product Folder Links: ADC10065 |
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