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ADSQ-1410 Datasheet(PDF) 8 Page - Murata Power Solutions Inc. |
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ADSQ-1410 Datasheet(HTML) 8 Page - Murata Power Solutions Inc. |
8 / 11 page ADSQ-1410 Quad 14-Bit, 10 MSPS Sampling A/D Converter MDA_ADSQ.B01 Page 8 of 11 www.murata-ps.com Technical enquiries email: data.acquisition@murata-ps.com, tel: +1 508 339 3000 Typical Performance Curves and Plots Dynamic DNL Fs: 4.85 MHz Fs: 10MHz Range Voltage: 2.5V Grounded Input Histogram 16384 points RANGE pin = 1V Grounded Input Histogram 16384 points RANGE pin = 2.5V -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0% 10% 20% 30% 40% 50% 60% 70% 80% 8193 More 8194 0.00% 10.00% 20.00% 30.00% 40.00% 50.00% 8196 8197 8198 8199 8200 8201 8202 8203 More SPECIFICATION DEFINITIONS Total Harmonic Distortion (THD): Ratio of total RMS harmonic power to RMS fundamental power THD = 10 X log (RMS of all harmonics/RMS of fundamental) SNR With Distortion (SINAD): Ratio of RMS power present in output, excluding fundamental: to the RMS fundamental power SINAD = 10 X log (fundamental RMS / RMS of remaining output); expressed in db SNR without Distortion (SNR): Ratio of RMS power present in output, excluding fundamental and harmonics: to the RMS power of the funda- mental SNR = 10 X log (fundamental RMS / RMS of power present in output, excluding fundamental and harmonics, to the fundamental; expressed in db Spurious Free Dynamic Range (SFDR): Difference between fundamental peak value and the value of highest spike present in the output (harmonic or spur). SFRD = Fundamental (dB) – Highest Spur (dB) ; expressed in db PSSR: Survo-loop is employed applying an input voltage that forces output codes to FS-1LSB. One supply voltage is changed to the specified limits and any change in input voltage recorded. The change in input volt- age is divided by the full scale voltage and then divided by percent change in power supplies. The resulting units are % / %. Zero Error: Survo-loop is employed applying an input voltage that forces output codes to: Unipolar devices - LSB on half of the time and all other bits off. Bipolar devices - MSB on, the LSB on half the time and all other bits off. The input voltage is compared to 0V. The result is = Input voltage - 0.5 LSB. Offset Error: Survo-loop is employed applying an input voltage that forces output codes to LSB on half of the time, and all other bits off. The input voltage is compared to 0V for unipolar devices, and -0.5 X full scale for bipolar devices. The result is this difference - 0.5 LSBs. Full Scale Absolute Accuracy: Survo-loop is employed applying an input voltage that forces output codes to LSB on half of the time and all other bits on. The input voltage is compared to full scale for unipolar devices, and 0.5 X full scale for bipolar devices. The result is this difference + 1.5 LSBs. Gain Error: The result is the difference between the Offset Error result and the Full Scale Absolute Accuracy result. Dynamic DNL Min: An AC signal is input to the device. 2n x 128 (2.1e6 for 14 bit converter) samples are taken, and the number of times each code appears is recorded. The data is normalized using ideal sine wave values. The result is the most negative and most positive numbers in the array. Grounded Input RMS Noise: Input to the device is tied to Signal Ground. 2n x 128 (2.1e6 for 14 bit converter) samples are taken and stored in an array. The result is the RMS value of this array. |
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