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AD7013ARS датащи(PDF) 4 Page - Analog Devices |
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AD7013ARS датащи(HTML) 4 Page - Analog Devices |
4 / 20 page –4– REV. A AD7013 ABSOLUTE MAXIMUM RATINGS1 (T A = +25°C unless otherwise noted) V AA, VDD to GND ......................... –0.3 V to +7 V AGND to DGND ........................ –0.3 V to +0.3 V Digital I/O Voltage to DGND ........... –0.3 V to V DD +0.3 V Analog I/O Voltage to AGND ........... –0.3 V to V DD +0.3 V Operating Temperature Range Industrial (A Version) ................... –40 °C to +85°C Storage Temperature Range ............... –65 °C to +150°C Maximum Junction Temperature ................... +150 °C SSOP θ JA Thermal Impedance .................... +122°C/W Lead Temperature Soldering Vapor Phase (60 sec) ........................... +215 °C Infrared (15 sec) .............................. +220 °C NOTES 1Stresses above those listed under “Absolute Maximum Ratings” may cause perma- nent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions extended periods may affect device reliability. TERMINOLOGY Sampling Rate This is the rate at which the modulators on the receive channels sample the analog input. Output Rate This is the rate at which data words are made available at the RxDATA pin. Integral Nonlinearity This is the maximum deviation from a straight line passing through the endpoints of the DAC or ADC transfer function. Differential Nonlinearity This is the difference between the measured and the ideal 1 LSB change between any two adjacent codes in the DAC or ADC. Dynamic Range Dynamic Range is the ratio of the maximum rms input signal to the rms noise of the converter, expressed logarithmically, in decibels (dB = 20 log 10 [ratio]). Signal to (Noise + Distortion) Ratio This is the measured ratio of signal to (noise + distortion) at the output of the receive channel. The signal is the rms amplitude of the fundamental. Noise is the rms sum of all nonfundamental signals up to half the sampling frequency (f S/2), excluding dc. The ratio is dependent upon the number of quantization levels in the digitization process; the more levels, the smaller the quantization noise. The theoretical signal to (noise + distortion) ratio for a sine wave is given by: Signal to (Noise + Distortion) = (6.02N + 1.76) dB Settling Time This is the digital filter settling time in the AD7013 receive section. Bias Offset Error This is the amount of offset in the receive channel ADC when the differential inputs are tied together. Receive Error Vector Magnitude This is a measure of the rms signal error vector introduced by the receive Root-Raised Cosine digital filter. This is measured by applying an ideal transmit signal (i.e., an ideal π/4 DQPSK modulator and an ideal transmit Root-Raised Cosine filter) to the receive channel and measuring the resulting rms error vector. Offset Vector Magnitude This is a measure of the offset vector introduced by the AD7013 as illustrated in the figure below. The offset vector is calculated so as to minimize the rms error vector for each of the constellation points. ERROR VECTOR SIGNAL VECTOR OFFSET VECTOR Q I PIN CONFIGURATION VAA IRx BYPASS AGND AUX IRx QRx AUX QRx AUX DAC1 AUX DAC2 AUX DAC3 AUX IRx IRx FS ADJUST AGND QRx VDD AUX QRx MCLK AGND DxCLK MODE1 DATA IN Rx FRAME FRAME IN Rx DATA DGND Rx CLK FRAME OUT 13 1 2 5 6 7 3 4 8 9 10 11 12 14 18 28 27 24 23 22 26 25 21 20 19 17 16 15 TOP VIEW (Not to Scale) AD7013 ORDERING GUIDE Model Temperature Range Package Option* AD7013ARS –40 °C to +85°C RS-28 *RS = SSOP. WARNING! ESD SENSITIVE DEVICE CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this device features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recom- mended to avoid performance degradation or loss of functionality. |
Аналогичный номер детали - AD7013ARS |
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Аналогичное описание - AD7013ARS |
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