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840002I

Renesas
Part Number 840002I
Manufacturer Renesas
Description Crystal-to-LVCMOS/LVTTL Frequency Synthesizer
Published Sep 27, 2023
Detailed Description FemtoClocks™ Crystal-to-LVCMOS/ LVTTL Frequency Synthesizer 840002I DATASHEET GENERAL DESCRIPTION The 840002I is a 2 o...
Datasheet PDF File 840002I PDF File

840002I
840002I

Overview
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 impedance • 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 1 nXTAL_SEL 2 TEST_CLK 3 OE 4 MR 5 nPLL_SEL 6 VDDA 7 VDD 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, ...


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