Datenblatt-Suchmaschine für elektronische Bauteile |
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DAC712PB Datenblatt(PDF) 11 Page - Texas Instruments |
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DAC712PB Datenblatt(HTML) 11 Page - Texas Instruments |
11 / 23 page DISCUSSION OF SPECIFICATIONS LINEARITY ERROR TOTAL HARMONIC DISTORTION + NOISE DIFFERENTIAL LINEARITY ERROR SIGNAL-TO-NOISE AND DISTORTION RATIO MONOTONICITY DIGITAL-TO-ANALOG GLITCH IMPULSE DIGITAL FEEDTHROUGH SETTLING TIME DAC712 www.ti.com ................................................................................................................................................. SBAS023A – SEPTEMBER 2000 – REVISED JULY 2009 Linearity error is defined as the deviation of the Total harmonic distortion + noise is defined as the analog output from a straight line drawn between the ratio of the square root of the sum of the squares of end points of the transfer characteristic. the values of the harmonics and noise to the value of the fundamental frequency. It is expressed in % of the fundamental frequency amplitude at sampling rate fS. Differential linearity error (DLE) is the deviation from 1LSB of an output change from one adjacent state to the next. A DLE specification of ±1/2LSB means that (SINAD) the output step size can range from 1/2LSB to 3/2LSB when the digital input code changes from one SINAD includes all the harmonic and outstanding code word to the adjacent code word. If the DLE is spurious components in the definition of output noise more positive than –1LSB, the D/A converter is said power in addition to quantizing and internal random to be monotonic. noise power. SINAD is expressed in dB at a specified input frequency and sampling rate, fS. A D/A converter is monotonic if the output either increases or remains the same for increasing digital The amount of charge injected into the analog output input values. Monotonicity of the DAC712 is ensured from the digital inputs when the inputs change state. over the specified temperature range to 13, 14, 15, It is measured at half-scale at the input codes where and 16 bits for performance grades DAC712P/U, as many switches as possible change state—from DAC712PB/UB, DAC712PK/UK, and DAC712PL/UL, 7FFFh to 8000h. respectively. When the analog-to-digital (A/D) converter is not Settling time is the total time (including slew time) for selected, high-frequency logic activity on the digital the D/A output to settle to within an error band inputs is coupled through the device and shows up as around its final value after a change in input. Settling output noise. This noise is digital feedthrough. times are specified to within ±0.003% of Full-Scale Range (FSR) for an output step change of 20V and 1LSB. The 1LSB change is measured at the Major Carry (FFFFh to 0000h, and 0000h to FFFFh: BTC codes), the input transition at which worst-case settling time occurs. Copyright © 2000–2009, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Link(s): DAC712 |
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Ähnliche Beschreibung - DAC712PB |
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