SiT2025B High Frequency, Automotive AEC-Q100 SOT23 Oscillator
Pin 1 Configuration Options (OE or NC)
Pin 1 of the SiT2025 can be factory-programmed to support
two modes: Output Enable (OE) 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 con-
sumption is reduced due to the inactivity of the output.
When the OE pin is pulled High, the output is typically
enabled in <1µs.
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 or NC mode.
Table 12. OE vs. NC
OE NC
Active current 125 MHz (max, 1.8V) 6 mA 6 mA
OE disable current (max. 1.8V) 4 mA N/A
OE enable time at 110 MHz (max) 130 ns N/A
Output driver in OE disable High Z N/A
Output on Startup and Resume
The SiT2025 comes with gated output. Its clock output is
accurate to the rated frequency stability within the first
pulse from initial device startup.
In addition, the SiT2025 supports “no runt” pulses and “no
glitch” output during startup or when the output driver is
reenabled from the OE disable mode as shown in the
waveform captures in Figure 16 and Figure 17.
Figure 16. Startup Waveform vs. Vdd
Figure 17. Startup Waveform vs. Vdd
(Zoomed-in View of Figure 16)
