Motore di ricerca datesheet componenti elettronici |
|
TS1001 Scheda tecnica(PDF) 2 Page - Silicon Laboratories |
|
TS1001 Scheda tecnica(HTML) 2 Page - Silicon Laboratories |
2 / 5 page AN833 2 Rev. 1.1 Figure 2. Measured V_iload vs. Input Current Amplifier input offset voltages need to be considered carefully in this circuit. The TS1001 op amp is specified with ±3 mV maximum input offset voltage at 25 °C, which corresponds to ±3 mA of error. Figure 2 shows an offset of approximately 2.5 mA. Another consideration is that Q1 exhibits drain-source leakage current of a few 10s of nanoamps at 25 °C and can approach 1µA over the commercial temperature range. Since the current through Q1 is effectively controlled by the TS1001’s loop, any drain-source leakage from Q1 appears as a current floor and generates a corresponding minimum voltage output across R3 below which current cannot be measured until the op amp “takes over” at higher measured currents. Therefore, normal methods of removing the current sense amplifier input offset voltage by subtracting the zero-load voltage at V_iin will not work, since the offset voltage due to the op amp’s Vos and the current floor from Q1’s drain-source leakage cannot be separated. Table 1. Current Sense Amplifier Circuit Supply Current vs. Load Current Load Current Current Used by the Current Sense Amplifier 0 860 nA 50 mA 48.1 µA |
Codice articolo simile - TS1001 |
|
Descrizione simile - TS1001 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEETIT.COM |
Lei ha avuto il aiuto da alldatasheet? [ DONATE ] |
Di alldatasheet | Richest di pubblicita | contatti | Privacy Policy | scambio Link | Ricerca produttore 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 |