Datasheet SiTime SiT1881

Datasheet SiTime SiT1881

Automotive ultra-low power, low-jitter, 32.768 kHz programmable oscillator in 1.2 x 1.1 mm package


Datasheet SiT1881
PDF, 472 Kb, Language: en, File uploaded: Oct 20, 2022, Pages: 8
Automotive Ultra-Low Power, Low Jitter 32.768 kHz Oscillator
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China PCB Prototype and Fabrication Manufacturer

Detailed Description

SiT1881 is an ultra-low power automotive-qualified 32-kHz oscillator (XO), designed for ±50 ppm operation up to 105°C.

It is a programmable oscillator with a default frequency of 32.768 kHz with the ability to support 17 other frequencies from 1 Hz to 262.144 kHz. The SiT1881 XO is SiTime’s lowest power XO with a no-load current of only 490 nA. Furthermore, it eliminates any requirement for load capacitors and comes in a small 1.2 X 1.1 mm QFN package. This enables up to 75% smaller footprint compared to 2.0 x 1.2 mm SMD crystal. The SiT1881 can drive up to 100 pf of load, which provides additional system savings by eliminating multiple 32.768 kHz crystals in a design. This device also introduces an innovative new Reduced Swing technology to further minimize overall system power.

Model Line

Series: SiT1881 (1)

Manufacturer's Classification

  • µPower Oscillators 1 Hz to 26 MHz