SiT1534中文资料Ultra-Small µPower, 1 Hz to 32.768 kHz Oscillator数据手册SiTime规格书

描述 Description

The SiT1534 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. SiTime's 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 2.0 x 1.2 mm SMD XTAL packages. Unlike XTALs, the SiT1534 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 SiT1534 features NanoDrive™, a factory-programmable output that reduces the voltage swing to minimize power.

特性 Features

Factory programmable down to 1 Hz
• Significantly reduces power compared to fixed 32.768 kHz XTALs

Smallest footprint in chip-scale (CSP): 1.5 x 0.8 mm
• Saves board space by up to 80% compared to the 2012 SMD XTALs

Small SMD package: 2.0 x 1.2 mm (2012)
• Pin-compatible to 2012 XTAL SMD

NanoPower: 900 nA (typ.)
• Extends battery life

Operates down to 1.2 V
• Supports coin-cell or supercap battery backup

NanoDrive™ reduced swing oscillator output
• Directly interfaces to MCU/PMIC/chipset XTAL IN
• Programmable output swing minimizes power
• Oscillator output eliminates load capacitor

No load or VDD filtering capacitors
• Eliminates any external capacitors
• Eliminates load dependent startup issues

<100 ppm frequency stability over -40 °C to +85 °C temp. range
• 2x better stability compared to quartz
• Improves wireless connectivity and RTC accuracy

应用 Application

• Wireless Mouses
• Wireless Keypads
• Pulse-per-second (PPS) Timekeeping
• RTC Reference Clocks
• Battery Management Timekeeping

简介

SiT1534属于晶体振荡器谐振器的振荡器。由制造生产的SiT1534振荡器振荡器产品用作频率/时间基准源，与常用于类似用途的晶体产品相比，区别在于它们集成了更多功能，用于生成输出的保持和稳定。最简单的振荡器包括晶体或其他谐振元件，并且具备必要的功能，让用户能够获取频率基准，而无需密切关注谐振元件的工作。更先进的器件还集成了温度补偿或控制功能，以获取更稳定的基准或能够进行选择性调节的基准。