SIT1534AC-J5-DCC-00.256E

The SIT1534AI is the first programmable oscillator capable of a frequency range between 32.768 kHz down to 1 Hz for true pulse-per-second (PPS) operation. The silicon MEMS technology enables the smallest footprint and chip-scale packaging. In the chip-scale package (CSP), these devices reduce footprint by as much as 80% compared to existing 2 x 1.2 mm SMD XTAL packages. Unlike XTALs, the SIT1534AI oscillator output enables greater component placement flexibility and eliminates external load capacitors, thus saving additional component count and board space. And unlike standard oscillators, the SIT1534AI features NanoDrive, a factory programmable output that reduces the voltage swing to minimize power.

The MEMS oscillators consist of MEMS resonators and a programmable analog circuit. Our MEMS resonators are built with unique MEMS First process. A key manufacturing step is EpiSeal during which the MEMS resonator is annealed with temperatures over 1000°C. EpiSeal creates an extremely strong, clean, vacuum chamber that encapsulates the MEMS resonator and ensures the best performance and reliability. During EpiSeal, a poly silicon cap is grown on top of the resonator cavity, which eliminates the need for additional cap wafers or other exotic packaging. As a result, MEMS resonator die can be used like any other semiconductor die. One unique result of MEMS First and EpiSeal manufacturing processes is the capability to integrate MEMS die with a SOC, ASIC, microprocessor or analog die within a package to eliminate external timing components and provide a highly integrated, smaller, cheaper solution to the customer.

• Factory programmable from 32.768 kHz down to1 Hz
• <20 ppm frequency tolerance
• Smallest footprint in chip-scale (CSP): 1.5 x 0.8 mm
• Pin-compatible to 2.0 x 1.2 mm XTAL SMD package
• Ultra-low power: <1µ
• Vdd supply range: 1.5V to 3.63V over -40°C to +85°C
• Supports low-voltage battery backup from a coin cell or supercap
• Oscillator output eliminates external load caps
• Internal filtering eliminates external Vdd bypass cap
• NanoDrive programmable output swing for lowest power
• Pb-free, RoHS and REACH compliant
• Temperature range: -40 to 85°C