Datasheet> 器件分类 > 无源元件> 振荡器> SIT5156AI-FKE25EX-1.000000X

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SIT5156AI-FKE25EX-1.000000X: 产品描述LVCMOS Output Clock Oscillator, 1MHz Nom, CQFN, 10 PIN; 产品类别无源元件振荡器; 文件大小1MB，共38页; 制造商SiTime; 标准

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SIT5156AI-FKE25EX-1.000000X概述

LVCMOS Output Clock Oscillator, 1MHz Nom, CQFN, 10 PIN

SIT5156AI-FKE25EX-1.000000X规格参数

参数名称	属性值
是否Rohs认证	符合
厂商名称	SiTime
包装说明	LCC10,.12X.2,53/47/43
Reach Compliance Code	unknow
其他特性	ENABLE/DISABLE FUNCTION
老化	1 PPM/FIRST YEAR
最长下降时间	1.9 ns
频率调整-机械	NO
频率稳定性	0.5%
安装特点	SURFACE MOUNT
端子数量	10
标称工作频率	1 MHz
最高工作温度	85 °C
最低工作温度	-40 °C
振荡器类型	LVCMOS
输出负载	220 OHM, 550 pF
封装主体材料	CERAMIC
封装等效代码	LCC10,.12X.2,53/47/43
物理尺寸	5.15mm x 3.35mm x 1.06mm
最长上升时间	1.9 ns
最大供电电压	2.75 V
最小供电电压	2.25 V
标称供电电压	2.5 V
表面贴装	YES
最大对称度	55/45 %

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SiT5156

Description

1 MHz to 60 MHz, ±0.5 to ±2.5 ppm, Elite Platform™ Super-TCXO

Features



TCXO that is engineered for best dynamic performance. It

is ideal for high reliability telecom, wireless and networking,

industrial, precision GNSS and audio/video applications.

Leveraging SiTime’s unique DualMEMS™ temperature

sensing and TurboCompensation™ technologies, the

SiT5156 delivers the best dynamic performance for timing

stability in the presence of environmental stressors such as

air flow, temperature perturbation, vibration, shock, and

electromagnetic interference. This device also integrates

multiple on-chip regulators to filter power supply noise,

eliminating the need for a dedicated external LDO.

The SiT5156 offers three device configurations that can be

ordered using

Ordering Codes

for:

1) TCXO with non-pullable output frequency,

2) VCTCXO allowing voltage control of output

frequency, and

3) DCTCXO, enabling digital control of output frequency

using an I C interface, pullable to 5 ppt (parts per

trillion) resolution.

The SiT5156 can be factory programmed for any

combination of frequency, stability, voltage, and pull range.

Programmability enables designers to optimize clock

configurations while eliminating long lead times and

customization costs associated with quartz devices where

each frequency is custom built.

Refer to

Manufacturing Guideline

for proper reflow profile

and PCB cleaning recommendations to ensure best

performance.

The

SiT5156

is a ±0.5 ppm to ±2.5 ppm MEMS Super-



Any frequency from 1 MHz to 60 MHz in 1 Hz steps

Factory programmable options for short lead times

Best dynamic stability under airflow, thermal shock



±0.5 ppm stability across temperature



±15 ppb/

C typical

frequency slope (ΔF/ΔT)

-40°C to +105°C operating temperature

No activity dips or micro jumps

Resistant to shock, vibration and board bending

On-chip regulators eliminate the need for external LDOs

Digital frequency pulling (DCTCXO) via I C



Digital control of output frequency and pull range



Up to

±3200

ppm pull range



Frequency pull resolution down to 5 ppt

2.5V, 2.8V, 3.0V and 3.3V supply voltage

LVCMOS or clipped sinewave output

RoHS and REACH compliant

Pb-free, Halogen-free, Antimony-free

Applications



Precision GNSS systems

Microwave backhaul

Network routers and switches

Professional audio and video equipment

Storage and servers

Test and measurement

Block Diagram

5.0 mm x 3.2 mm Package Pinout

SDA / NC

OE / VC / NC

SCL / NC

GND

VDD

CLK

A0 / NC

Figure 1. SiT5156 Block Diagram

Figure 2. Pin Assignments (Top view)

(Refer to

Table 13

for Pin Descriptions)

Rev 1.05

March 28, 2020

www.sitime.com

SiT5156

1 MHz to 60 MHz, ±0.5 to ±2.5 ppm, Elite Platform™ Super-TCXO

TABLE OF CONTENTS

Description ................................................................................................................................................................................... 1

Features....................................................................................................................................................................................... 1

Applications ................................................................................................................................................................................. 1

Block Diagram ............................................................................................................................................................................. 1

5.0 mm x 3.2 mm Package Pinout ............................................................................................................................................... 1

Ordering Information .................................................................................................................................................................... 2

Electrical Characteristics.............................................................................................................................................................. 4

Device Configurations and Pin-outs ............................................................................................................................................. 9

Pin-out Top Views................................................................................................................................................................. 9

Test Circuit Diagrams for LVCMOS and Clipped Sinewave Outputs ......................................................................................... 10

Waveforms................................................................................................................................................................................. 12

Timing Diagrams ........................................................................................................................................................................ 13

Typical Performance Plots ......................................................................................................................................................... 14

Architecture Overview ................................................................................................................................................................ 16

Frequency Stability ............................................................................................................................................................. 16

Output Frequency and Format............................................................................................................................................ 16

Output Frequency Tuning ................................................................................................................................................... 16

Pin 1 Configuration (OE, VC, or NC) .................................................................................................................................. 17

Device Configurations ................................................................................................................................................................ 17

TCXO Configuration ........................................................................................................................................................... 17

VCTCXO Configuration ...................................................................................................................................................... 18

DCTCXO Configuration ...................................................................................................................................................... 19

VCTCXO-Specific Design Considerations ................................................................................................................................. 20

Linearity .............................................................................................................................................................................. 20

Control Voltage Bandwidth ................................................................................................................................................. 20

FV Characteristic Slope K

................................................................................................................................................. 20

Pull Range, Absolute Pull Range ........................................................................................................................................ 21

DCTCXO-Specific Design Considerations ................................................................................................................................. 22

Pull Range and Average Pull Range .................................................................................................................................. 22

Output Frequency ............................................................................................................................................................... 23

I C Control Registers .......................................................................................................................................................... 25

Register Descriptions.......................................................................................................................................................... 25

Register Address: 0x00. Digital Frequency Control Least Significant Word (LSW) ............................................................ 25

Register Address: 0x01. OE Control, Digital Frequency Control Most Significant Word (MSW)......................................... 26

[15]

....................................................................................... 27

Serial Interface Configuration Description .......................................................................................................................... 28

Serial Signal Format ........................................................................................................................................................... 28

Parallel Signal Format ........................................................................................................................................................ 29

Parallel Data Format ........................................................................................................................................................... 29

I C Timing Specification ...................................................................................................................................................... 31

I C Device Address Modes ................................................................................................................................................. 32

Schematic Example ............................................................................................................................................................ 33

Dimensions and Patterns ........................................................................................................................................................... 34

Layout Guidelines ...................................................................................................................................................................... 35

Manufacturing Guidelines .......................................................................................................................................................... 35

Additional Information ................................................................................................................................................................ 36

Revision History ......................................................................................................................................................................... 37

Rev 1.05

Page 3 of 38

www.sitime.com

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