Electronic Components Datasheet Search |
|
AS8501 Datasheet(PDF) 11 Page - ams AG |
|
AS8501 Datasheet(HTML) 11 Page - ams AG |
11 / 41 page AS8501 - Data Sheet austriamicrosystems Revision 1.1, 04-April-06 www.austriamicrosystems.com Page 10 of 40 7.2.1 Reference voltage The ASSP contains a highly sophisticated precision reference voltage. Its typical temperature dependence is a slight parabola shaped curve and is shown in figure 21. This reference voltage is used mainly for the internal AD-converter, but can also be used for external purposes if the impedance of the external circuitry is high enough. The absolute value and its temperature coefficient (TC) is given by the content of the TRR register. This opens the possibility to calibrate the reference voltage to the optimum absolute value (i.e. 1.28 V) and the TC value to zero thus eliminating fully the production spread. Writing into subregister TRIMBV of TRR changes the absolute value linearly by 5.1 mV per digit as shown in the following graph and described in full detail in 7.5.7 Trimming the TC value is similarly done by writing into subregister TRIMBTC. Since the TC trimming is also changing the absolute value it is important to trim the TC first and then the absolute value. 1,1 6 1,2 0 1,2 4 1,2 8 1,3 2 1,3 6 0 5 1 0 15 20 25 3 0 c onte n t of TR IM B V in bits 75 ° C 24 °C 1,12 1,14 1,16 1,18 1,20 1,22 1,24 1,26 10 30 50 70 90 110 resistan ce lo ad in kO h m m eas u rem en t o p en lo o p va lu e Figure 4: Reference voltage as function of resistance load Figure 5: Reference voltage as function of temperature |
Similar Part No. - AS8501_06 |
|
Similar Description - AS8501_06 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |