DataSheetWiki

840002I Datasheet دیتاشیت PDF دانلود

دیتاشیت - IDT - Crystal-to-LVCMOS/LVTTL Frequency Synthesizer

شماره قطعه 840002I
شرح مفصل Crystal-to-LVCMOS/LVTTL Frequency Synthesizer
تولید کننده IDT 
آرم IDT 


1 Page

		

No Preview Available !

840002I شرح
FemtoClocks™ Crystal-to-LVCMOS/
LVTTL Frequency Synthesizer
840002I
DATASHEET
GENERAL DESCRIPTION
The 840002I is a 2 output LVCMOS/LVTTL Synthesizer
optimized to generate Fibre Channel reference clock
frequencies. Using a 26.5625MHz 18pF parallel resonant
crystal, the following frequencies can be generated based on the
2 frequency select pins (F_SEL1:0): 212.5MHz, 159.375MHz,
156.25MHz, 106.25MHz, and 53.125MHz. The 840002I uses
IDT’s 3rd generation low phase noise VCO technology and can
achieve 1ps or lower typical rms phase jitter, easily meeting
Fibre Channel jitter requirements. The 840002I is packaged in
a 16-pin TSSOP package.
FREQUENCY SELECT FUNCTION TABLE
FEATURES
• Two LVCMOS outputs @ 3.3V, 17Ω typical output imped-
ance
• Selectable crystal oscillator interface
or LVCMOS single-ended input
• Output frequency range: 46.66MHz - 233.33MHz
• VCO range: 560MHz - 700MHz
• Supports the following output frequencies: 212.5MHz,
159.375MHz, 156.25MHz, 106.25MHz and 53.125MHz
• RMS phase jitter @ 212.5MHz (637KHz - 10MHz):
0.83ps (typical)
Typical phase noise at 212.5MHz:
Offset
Noise Power
100Hz ................-91.3 dBc/Hz
1KHz ..............-114.3 dBc/Hz
10KHz ..............-120.7 dBc/Hz
100KHz ..............-120.2 dBc/Hz
• Power supply modes:
Core/Output
3.3V/3.3V
3.3V/2.5V
2.5V/2.5V
• -40°C to 85°C ambient operating temperature
• Lead-Free package RoHS compliant
Input Frequency
(MHz)
F_SEL1
26.5625
0
26.5625
0
26.5625
1
26.5625
1
26.04166
0
BLOCK DIAGRAM
F_SEL0
0
1
0
1
1
Inputs
M Divider Value N Divider Value
24 3
24 4
24 6
24 12
24 4
Output Frequency
M/N Ratio Value
(MHz)
8 212.5
6 159.375
4 106.25
2 53.125
6 156.25
PIN ASSIGNMENT
F_SEL0
nXTAL_SEL
TEST_CLK
OE
MR
nPLL_SEL
VDDA
VDD
1
2
3
4
5
6
7
8
16 F_SEL1
15 GND
14 GND
13 Q0
12 Q1
11 VDDO
10 XTAL_IN
9 XTAL_OUT
840002I
16-Lead TSSOP
4.4mm x 5.0mm x 0.92mm
package body
G Package
Top View
840002I REVISION A 3/30/15
1 ©2015 Integrated Device Technology, Inc.

قانون اساسیصفحه 15
دانلود [ 840002I دیتاشیت ]



دیتاشیت توصیه

شماره قطعه شرح مفصل تولید کنندگان
840002I Crystal-to-LVCMOS/LVTTL Frequency Synthesizer IDT
IDT

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2019   |   تماس با ما  |   جستجو