Electronic Components Datasheet Search |
|
ADS1192IRSMR Datasheet(PDF) 24 Page - Texas Instruments |
|
|
ADS1192IRSMR Datasheet(HTML) 24 Page - Texas Instruments |
24 / 67 page fCLK fMOD CLK_DIV (Bit 6 of LOFF_STAT Register) Frequency Divider Divide-By-4 Frequency Divider Divide-By-16 ADS1191 ADS1192 SBAS566A – DECEMBER 2011 – REVISED SEPTEMBER 2012 www.ti.com CLOCK The ADS1191/2 provide two different methods for device clocking: internal and external. Internal clocking is ideally suited for low-power, battery-powered systems. The internal oscillator is trimmed for accuracy at room temperature. Over the specified temperature range the accuracy varies; see the Electrical Characteristics. Clock selection is controlled by the CLKSEL pin and the CLK_EN register bit. The CLKSEL pin selects either the internal or external clock. The CLK_EN bit in the CONFIG1 register enables and disables the oscillator clock to be output in the CLK pin. A truth table for these two pins is shown in Table 3. The CLK_EN bit is useful when multiple devices are used in a daisy-chain configuration. It is recommended that during power-down the external clock be shut down to save power. Table 3. CLKSEL Pin and CLK_EN Bit CONFIG1.CLK_EN CLKSEL PIN BIT CLOCK SOURCE CLK PIN STATUS 0 X External clock Input: external clock 1 0 Internal clock oscillator 3-state 1 1 Internal clock oscillator Output: internal clock oscillator The ADS1191/2 have the option to choose between two different external clock frequencies (512 kHz or 2.048 MHz). This frequency is selected by setting the CLK_DIV bit (bit 6) in the LOFF_STAT register. The modulator must be clocked at 128 kHz, regardless of the external clock frequency. Figure 28 shows the relationship between the external clock (fCLK) and the modulator clock (fMOD). The default mode of operation is fCLK = 512 kHz. The higher frequency option has only been provided to allow the SPI to run at a higher speed. SCLK can be only twice the speed of fCLK during a register read and/or write. Figure 28. Relationship Between External Clock (fCLK) and Modulator Clock (fMOD) 24 Submit Documentation Feedback Copyright © 2011–2012, Texas Instruments Incorporated Product Folder Links: ADS1191 ADS1192 |
Similar Part No. - ADS1192IRSMR |
|
Similar Description - ADS1192IRSMR |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | 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 |