SIT5156AICFD-25VT-10.000000Y datasheet, PDF

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SIT5156AICFD-25VT-10.000000Y: DescriptionClipped Sine Output Oscillator, 10MHz Nom,; CategoryPassive components oscillator; File Size1MB，34 Pages; ManufacturerSiTime; Environmental Compliance

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SIT5156AICFD-25VT-10.000000Y Overview

Clipped Sine Output Oscillator, 10MHz Nom,

SIT5156AICFD-25VT-10.000000Y Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	SiTime
Reach Compliance Code	compliant
Factory Lead Time	14 weeks
Other features	TR
Ageing	1 PPM/FIRST YEAR
Maximum control voltage	2.25 V
Minimum control voltage	0.25 V
Frequency Adjustment - Mechanical	NO
Frequency offset/pull rate	6.25 ppm
frequency stability	2.5%
JESD-609 code	e4
Installation features	SURFACE MOUNT
Nominal operating frequency	10 MHz
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Oscillator type	CLIPPED SINE
Output impedance	10000 Ω
Output level	0.8 V
physical size	5.15mm x 3.35mm x 1.06mm
Maximum supply voltage	2.75 V
Minimum supply voltage	2.25 V
Nominal supply voltage	2.5 V
surface mount	YES
Terminal surface	GOLD OVER NICKEL
Base Number Matches	1

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SiT5156

Description

PRELIMINARY

1 to 60 MHz,

±0.5

ppm Elite Platform™ Super-TCXO

Features



The

SiT5156

is a ±0.5 to ±2.5 ppm MEMS Super-TCXO

engineered for best dynamic performance. It is ideal for

high reliability telecom, wireless and networking, industrial,

precision GNSS and audio/video applications.

By leveraging SiTime’s unique DualMEMS™ temperature

sensing and TurboCompensation™ technology, the

SiT5156 delivers the most stable timing in the presence of

environmental stressors – air flow, temperature

perturbation, vibration, shock and electromagnetic

interference (EMI). This device also integrates multiple on-

chip regulators, providing power supply noise filtering and

eliminating the need for a dedicated external LDO.

The SiT5156 offers three device configurations that can be

ordered with the associated

ordering codes:

TCXO with non-pullable output frequency

VCTCXO allowing voltage control of output frequency

DCTCXO enabling digital control of the output

frequency through the I C interface



SiT5156 can be factory-programmed to any combination of

frequency, stability, voltage, and pull range. This

programmability enables designers to optimize the clock

configuration while eliminating the long lead time and

customization cost associated with quartz TCXOs where

each frequency is custom built.

Any frequency between 1 MHz and 60 MHz in

1 Hz steps

Excellent dynamic stability under airflow and rapid

temperature change



±500 ppb over-temperature stability



±15

ppb/C frequency slope (ΔF/ΔT)



3e-11 ADEV at 10 second averaging time

No activity dips or micro jumps

Resistant to shock, vibration and board bending

Up to ±3200 ppm pull range (VCTCXO or DCTCXO)

Digital frequency pulling (DCTCXO) via I C



Digital control of output frequency and pull range



Frequency pull resolution as low as 5 ppt (0.005 ppb)

-40°C to +85°C operating temperature, contact

SiTime

for +105C option

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

On-chip regulators, eliminating the need for the

external LDO

LVCMOS or clipped sinewave output

RoHS and REACH compliant, Pb-free, Halogen-free

and Antimony-free

Applications



Precision GNSS

Microwave backhaul

Network switches and routers

Professional audio and video equipment

Storage and servers

Test and measurement

Block Diagram

5.0 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 9 for Pin Descriptions)

Rev 0.51

August 20, 2017

www.sitime.com

SiT5156

1 to 60 MHz,

±0.5

ppm Elite Platform™ Super-TCXO

TABLE OF CONTENTS

PRELIMINARY

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

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

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

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

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

Electrical Characteristics .........................................................................................................................................................3

Modes of Operation and Pin-outs.............................................................................................................................................6

Pin-out Top Views ............................................................................................................................................................ 6

Test Circuit Diagrams for LVCMOS and Clipped Sinewave Outputs .........................................................................................7

Waveforms ..............................................................................................................................................................................9

Timing Diagrams ................................................................................................................................................................... 10

Architecture Overview ........................................................................................................................................................... 11

Functional Overview .............................................................................................................................................................. 11

Frequency Stability ......................................................................................................................................................... 11

Output frequency and format .......................................................................................................................................... 11

Output Frequency Tuning ............................................................................................................................................... 11

Pin 1 Configuration (OE, VC, or NC) ............................................................................................................................... 12

Operating Mode Descriptions ................................................................................................................................................ 13

TCXO Mode ................................................................................................................................................................... 13

VCTCXO Mode .............................................................................................................................................................. 14

Linearity ......................................................................................................................................................................... 15

Control Voltage Bandwidth ............................................................................................................................................. 15

FV Characteristic Slope K

............................................................................................................................................. 15

DCTCXO Mode .............................................................................................................................................................. 16

Pull Range, Absolute Pull Range ........................................................................................................................................... 16

I C Control Registers ............................................................................................................................................................. 21

Register Descriptions ............................................................................................................................................................ 21

Register Address: 0x00. Digital Frequency Control Least Significant Word (LSW) ........................................................... 21

Register Address: 0x01. OE Control, Digital Frequency Control Most Significant Word (MSW) ........................................ 22

Register Address: 0x02. DIGITAL PULL RANGE CONTROL .......................................................................................... 23

Register Address: 0x05. PULL-UP DRIVE STRENGTH CONTROL ................................................................................ 24

Register Address: 0x06. PULL-DOWN DRIVE STRENGTH CONTROL .......................................................................... 25

Serial Interface Configuration Description .............................................................................................................................. 26

Serial Signal Format .............................................................................................................................................................. 26

Parallel Signal Format ........................................................................................................................................................... 27

Parallel Data Format.............................................................................................................................................................. 27

I C Timing Specification......................................................................................................................................................... 29

I C Device Address Modes .................................................................................................................................................... 30

Schematic Example............................................................................................................................................................... 31

Dimensions and Patterns....................................................................................................................................................... 32

Ordering Information.............................................................................................................................................................. 33

Rev 0.51

Page 2 of 34

www.sitime.com

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