Zakładka z wyszukiwarką danych komponentów |
|
AD9289BBC-65 Arkusz danych(PDF) 10 Page - Analog Devices |
|
AD9289BBC-65 Arkusz danych(HTML) 10 Page - Analog Devices |
10 / 16 page AD9289 Preliminary Technical Data Rev. PrJ | Page 10 of 16 6/25/2004 Internal Reference Connection A comparator within the AD9289 detects the potential at the SENSE pin and configures the reference into four possible states, which are summarized in Table I. If SENSE is grounded, the reference amplifier switch is connected to the internal resistor divider (see Figure 2), setting VREF to 1 V. Connecting the SENSE pin to VREF switches the reference amplifier output to the SENSE pin, completing the loop and providing a 0.5 V reference output. If a resistor divider is connected as shown in Figure 3, the switch will again be set to the SENSE pin. This will put the reference amplifier in a non-inverting mode with the VREF output defined as follows: VREF = .5 * (1 +R2/R1) In all reference configurations, REFT and REFB drive the ADC core and establish its input span. The input range of the ADC always equals twice the voltage at the reference pin for either an internal or an external reference. Figure 4. Internal Reference Connection Figure 5. Programmable Reference Connection External Reference Operation The use of an external reference may be necessary to enhance the gain accuracy of the ADC or improve thermal drift characteristics. When multiple ADCs track one another, a single reference (internal or external) may be necessary to reduce gain matching errors to an acceptable level. A high precision external reference may also be selected to provide lower gain and offset temperature drift. External reference mode is chosen by tying SENSE pin to AVDD and driving VREF with external reference. |
Podobny numer części - AD9289BBC-65 |
|
Podobny opis - AD9289BBC-65 |
|
|
Link URL |
Polityka prywatności |
ALLDATASHEET.PL |
Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Linki | Lista producentów 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 |