SIT5357AI-FN128IY-208.000000 datasheet, PDF

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SIT5357AI-FN128IY-208.000000: DescriptionTCXO, Clock,; CategoryPassive components oscillator; File Size2MB，37 Pages; ManufacturerSiTime; Environmental Compliance

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SIT5357AI-FN128IY-208.000000 Overview

TCXO, Clock,

SIT5357AI-FN128IY-208.000000 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Maker	SiTime
package instruction	LCC10,.12X.2,53/47/43
Reach Compliance Code	unknow
Other features	ENABLE/DISABLE FUNCTION
Ageing	0.23 PPM/FIRST YEAR
maximum descent time	1.9 ns
Frequency Adjustment - Mechanical	NO
frequency stability	0.25%
Installation features	SURFACE MOUNT
Number of terminals	10
Nominal operating frequency	208 MHz
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Oscillator type	LVCMOS
Output load	15 pF
Package body material	CERAMIC
Encapsulate equivalent code	LCC10,.12X.2,53/47/43
physical size	5.15mm x 3.35mm x 1.06mm
longest rise time	1.9 ns
Maximum slew rate	62 mA
Maximum supply voltage	3.08 V
Minimum supply voltage	2.52 V
Nominal supply voltage	2.8 V
surface mount	YES
maximum symmetry	55/42 %

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SiT5357

60 MHz – 220 MHz, ±0.1 to ±0.25 ppm,

Stratum 3, Elite Platform™ Precision Super-TCXO

Description

The

SiT5357

is a ±100 ppb precision MEMS Super-TCXO

that is fully compliant to Telcordia GR-1244-CORE Stratum

3 oscillator specifications. Engineered for best dynamic

performance, the SiT5357 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

SiT5357 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 SiT5357 offers three device configurations that can be

ordered using

Ordering Codes

for:

Features

◼

Output 60–189 MHz, and 208–220 MHz, in 1 Hz steps

Factory programmable options for short lead time

Best dynamic stability under airflow, thermal shock

▪

±100 ppb stability across temperature

▪

±1 ppb/C typical frequency slope (ΔF/ΔT)

▪

1.5e-11 ADEV at 10 second averaging time

-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

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

LVCMOS output

Digital frequency pulling (DCTCXO) via I

▪

Digital control of output frequency and pull range

▪

Up to

±3200

ppm pull range

▪

Frequency pull resolution down to 5 ppt

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

LVCMOS output

RoHS and REACH compliant

Pb-free, Halogen-free, Antimony-free

Applications

◼

The SiT5357 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.

4G/5G radio, Small cell

IEEE1588 boundary and grandmaster clocks

Synchronous Ethernet

Optical transport – SONET/SDH, OTN, Stratum 3

DOCSIS 3.x remote PHY

Precision GNSS systems

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. SiT5357 Block Diagram

Figure 2. Pin Assignments (Top view)

(Refer to

Table 11

for Pin Descriptions)

Rev 1.06

May 10, 2020

www.sitime.com

SiT5357

60 MHz – 220 MHz, ±0.1 to ±0.25 ppm, Stratum 3, Elite Platform™ Precision 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 Outputs .............................................................................................................................. 10

Waveforms................................................................................................................................................................................. 11

Timing Diagrams ........................................................................................................................................................................ 11

Stability Diagrams ...................................................................................................................................................................... 11

Typical Performance Plots ......................................................................................................................................................... 12

Architecture Overview ................................................................................................................................................................ 15

Frequency Stability ............................................................................................................................................................. 15

Output Frequency and Format ............................................................................................................................................ 15

Output Frequency Tuning ................................................................................................................................................... 15

Pin 1 Configuration (OE, VC, or NC) .................................................................................................................................. 16

Device Configurations ................................................................................................................................................................ 16

TCXO Configuration ........................................................................................................................................................... 16

VCTCXO Configuration ...................................................................................................................................................... 17

DCTCXO Configuration ...................................................................................................................................................... 18

VCTCXO-Specific Design Considerations ................................................................................................................................. 19

Linearity .............................................................................................................................................................................. 19

Control Voltage Bandwidth ................................................................................................................................................. 19

FV Characteristic Slope K

................................................................................................................................................. 19

Pull Range, Absolute Pull Range ........................................................................................................................................ 20

DCTCXO-Specific Design Considerations ................................................................................................................................. 21

Pull Range and Absolute Pull Range .................................................................................................................................. 21

Output Frequency ............................................................................................................................................................... 22

C Control Registers .......................................................................................................................................................... 24

Register Descriptions.......................................................................................................................................................... 24

Register Address: 0x00. Digital Frequency Control Least Significant Word (LSW) ............................................................ 24

Register Address: 0x01. OE Control, Digital Frequency Control Most Significant Word (MSW) ......................................... 25

[18]

........................................................................................ 26

Serial Interface Configuration Description .......................................................................................................................... 27

Serial Signal Format ........................................................................................................................................................... 27

Parallel Signal Format ........................................................................................................................................................ 28

Parallel Data Format ........................................................................................................................................................... 28

C Timing Specification ...................................................................................................................................................... 30

C Device Address Modes ................................................................................................................................................. 31

Schematic Example ............................................................................................................................................................ 32

Dimensions and Patterns ........................................................................................................................................................... 33

Layout Guidelines ...................................................................................................................................................................... 34

Manufacturing Guidelines .......................................................................................................................................................... 34

Additional Information ................................................................................................................................................................ 35

Revision History ......................................................................................................................................................................... 36

Rev 1.06

Page 3 of 37

www.sitime.com

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