数据搜索系统,热门电子元器件搜索 |
|
DAC7562SDSCR 数据表(PDF) 40 Page - Texas Instruments |
|
|
DAC7562SDSCR 数据表(HTML) 40 Page - Texas Instruments |
40 / 60 page REF_PRE REF_POST 6 HYST REF_NOM V V V = 10 (ppm/°C) V é ù - ´ ê ú ê ú ë û Output Pin Meter Load Force Line Sense Line Contact and Trace Resistance I L V OUT DAC7562, DAC7563, DAC8162 DAC8163, DAC8562, DAC8563 SLAS719E – AUGUST 2010 – REVISED JUNE 2015 www.ti.com Application Information (continued) 9.1.1.3 Noise Performance Typical 0.1-Hz to 10-Hz voltage noise and noise spectral density performance are listed in the Electrical Characteristics. Additional filtering can be used to improve output noise levels, although care should be taken to ensure the output impedance does not degrade the ac performance. The output noise spectrum at the VREFIN/VREFOUT pin, both unloaded and with an external 4.7-µF load capacitor, is shown in Figure 6. Internal reference noise impacts the DAC output noise when the internal reference is used. 9.1.1.4 Load Regulation Load regulation is defined as the change in reference output voltage as a result of changes in load current. The load regulation of the internal reference is measured using force and sense contacts as shown in Figure 95. The force and sense lines reduce the impact of contact and trace resistance, resulting in accurate measurement of the load regulation contributed solely by the internal reference. Measurement results are shown in Figure 4. Force and sense lines should be used for applications that require improved load regulation. Figure 95. Accurate Load Regulation of the DAC756x, DAC816x, and DAC856x Internal Reference 9.1.1.4.1 Long-Term Stability Long-term stability or aging refers to the change of the output voltage of a reference over a period of months or years. This effect lessens as time progresses. The typical drift value for the internal reference is listed in the Electrical Charateristics and measurement results are shown in Figure 5. This parameter is characterized by powering up multiple devices and measuring them at regular intervals. 9.1.1.5 Thermal Hysteresis Thermal hysteresis for a reference is defined as the change in output voltage after operating the device at 25°C, cycling the device through the operating temperature range, and returning to 25°C. Hysteresis is expressed by Equation 4: (4) where: VHYST = thermal hysteresis. VREF_PRE = output voltage measured at 25°C pre-temperature cycling. VREF_POST = output voltage measured after the device cycles through the temperature range of –40°C to aaa 125°C, and returns to 25°C. VREF_NOM = 2.5 V, target value for reference output voltage. 9.1.2 DAC Noise Performance Output noise spectral density at the VOUT-n pin versus frequency is depicted in Figure 45 and Figure 46 for full- scale, mid-scale, and zero-scale input codes. The typical noise density for mid-scale code is 90 nV/ √Hz at 1 kHz. High-frequency noise can be improved by filtering the reference noise. Integrated output noise between 0.1 Hz and 10 Hz is close to 2.5 µVPP (mid-scale), as shown in Figure 47. 40 Submit Documentation Feedback Copyright © 2010–2015, Texas Instruments Incorporated Product Folder Links: DAC7562 DAC7563 DAC8162 DAC8163 DAC8562 DAC8563 |
类似零件编号 - DAC7562SDSCR |
|
类似说明 - DAC7562SDSCR |
|
|
链接网址 |
隐私政策 |
ALLDATASHEETCN.COM |
ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |