データシートサーチシステム |
|
TMCS1100 データシート(PDF) 32 Page - Texas Instruments |
|
TMCS1100 データシート(HTML) 32 Page - Texas Instruments |
32 / 50 page S PSRR IN PSRR * (V 5) S e (%) I CM CMRR IN CMRR * V e (%) I OS OS I IN I e (%) I Input Current (A) 0 5 10 15 20 25 0 1 2 3 4 5 6 7 8 9 10 D007 RSS Max Error, 25°C 566 0D[ (UURU ± ƒ&WRƒ& 566 0D[ (UURU ± ƒ&WR ƒ& 32 TMCS1100 SBOS820A – SEPTEMBER 2019 – REVISED JUNE 2020 www.ti.com Product Folder Links: TMCS1100 Submit Documentation Feedback Copyright © 2019–2020, Texas Instruments Incorporated Application Information (continued) The total error calculation has a strong dependence on the actual input current; therefore, always calculate total error across the dynamic range that is required. These curves asymptotically approach the sensitivity and nonlinearity error at high current levels, and approach infinity at low current levels due to offset error terms with input current in the denominator. Key figures of merit for any current-measurement system include the total error percentage at full-scale current, as well as the dynamic range of input current over which the error remains below some key level. Figure 47 illustrates the RSS maximum total error as a function of input current for a TMCS1100A2 at room temperature and across the full temperature range with VS of 5 V. Figure 47. RSS Error vs Input Current 10.1.1.1 Room Temperature Error Calculations For room-temperature total-error calculations, specifications across temperature and drift are ignored. As an example, consider a TMCS1100A1 with a supply voltage (VS) of 3.3 V, a VREF of 1.5 V, and a worst-case common-mode excursion of 600 V to calculate operating-point-specific parameters. Consider a measurement error due to an external magnetic field of 30 µT, roughly the Earth's magnetic field strength. The full-scale current range of the device in specified conditions is slightly greater than 28 A; therefore, calculate error at both 25 A and 12.5 A to highlight error dependence on the input-current level. Table 1 shows the individual error components and RSS maximum total error calculations at room temperature under the conditions specified. Relative to other errors, the additional error from CMRR is negligible, and can typically be ignored for total error calculations. Table 1. Total Error Calculation: Room Temperature Example ERROR COMPONENT SYMBOL EQUATION % MAX TOTAL ERROR AT IIN = 25 A % MAX TOTAL ERROR AT IIN = 12.5 A Input offset error eIos 0.24% 0.48% CMRR error eCMRR 0.01% 0.02% PSRR error ePSRR 0.27% 0.54% |
同様の部品番号 - TMCS1100_V01 |
|
同様の説明 - TMCS1100_V01 |
|
|
リンク URL |
プライバシーポリシー |
ALLDATASHEET.JP |
ALLDATASHEETはお客様のビジネスに役立ちますか? [ DONATE ] |
Alldatasheetは | 広告 | お問い合わせ | プライバシーポリシー | リンク交換 | メーカーリスト 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 |