 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
SIT1618B Datasheet(PDF) 9 Page - SiTime Corp. |
|
|
|||||||||||||||||||||||||||||
SIT1618B Datasheet(HTML) 9 Page - SiTime Corp. |
|
|
9 / 18 page  The Smart Timing Choice The Smart Timing Choice SiT1618B Standard Frequency, High Temperature Oscillator Rev. 1.02 Page 9 of 13 www.sitime.com Pin 1 Configuration Options (OE, ST, or NC) Pin 1 of the SiT1618 can be factory-programmed to support three modes: Output Enable (OE), standby (ST) or No Connect (NC). These modes can also be programmed with the Time Machine using field programmable devices. Output Enable (OE) Mode In the OE mode, applying logic Low to the OE pin only disables the output driver and puts it in Hi-Z mode. The core of the device continues to operate normally. Power consumption is reduced due to the inactivity of the output. When the OE pin is pulled High, the output is typically enabled in <1µs. Standby (ST) Mode In the ST mode, a device enters into the standby mode when Pin 1 pulled Low. All internal circuits of the device are turned off. The current is reduced to a standby current, typically in the range of a few µA. When ST is pulled High, the device goes through the “resume” process, which can take up to 5 ms. No Connect (NC) Mode In the NC mode, the device always operates in its normal mode and outputs the specified frequency regardless of the logic level on pin 1. Table 12 below summarizes the key relevant parameters in the operation of the device in OE, ST, or NC mode. Output on Startup and Resume The SiT1618 comes with gated output. Its clock output is accurate to the rated frequency stability within the first pulse from initial device startup or resume from the standby mode. In addition, the SiT1618 features “no runt” pulses and “no glitch” output during startup or resume as shown in the waveform captures in Figure 17 and Figure 18. Figure 17. Startup Waveform vs. Vdd Figure 18. Startup Waveform vs. Vdd (Zoomed-in View of Figure 17) Instant Samples with Time Machine and Field Programmable Oscillators SiTime supports a field programmable version of the SiT1618 standard frequency, high temperature oscillator for fast proto- typing and real time customization of features. The field programmable devices (FP devices) are available for all five standard SiT1618 package sizes and can be configured to one’s exact specification using the Time Machine II, an USB powered MEMS oscillator programmer. Customizable Features of the SiT1618 FP Devices Include • 33 standard frequencies between 7.3728 MHz and 48 MHz (Refer to the frequency list on page 12) • Four frequency stability options, ±20 ppm, ±25 ppm, ±30 ppm, ±50 ppm • Two operating temperatures, -40 to 105°C or -40 to 125°C • Six supply voltage options, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V and 2.25 to 3.63V continuous • Output drive strength For more information regarding SiTime’s field programmable solutions, visit http://www.sitime.com/time-machine and http://www.sitime.com/fp-devices. SiT1618 is factory-programmed per customer ordering codes for volume delivery. Table 12. OE vs. ST vs. NC OE ST NC Active current 20 MHz (max, 1.8V) 4.5 mA 4.5 mA 4.5 mA OE disable current (max. 1.8V) 4.3 mA N/A N/A Standby current (typical 1.8V) N/A 0.6 uA N/A OE enable time at 48 MHz (max) 162 ns N/A N/A Resume time from standby (max, all frequency) N/A 5 ms N/A Output driver in OE disable/standby mode High Z weak pull-down N/A |
Similar Part No. - SIT1618B |
|
Similar Description - SIT1618B |
|
|
|
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 |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
