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See Technical Specifications

843252AGLF +BOM

Highly accurate frequency synthesizer for crystal-to- LVPECL conversion

Manufacturer:

Renesas Electronics Corporation
Mfr.Part #:

843252AGLF
Datasheet:

843252AGLF Datasheet (PDF)
Series:

FemtoClock®
Programmabe:

Not Verified
Type:

Frequency Synthesizer
PLL:

Yes

843252AGLF General Description

The 843252 is a 2 differential output LVPECL Synthesizer designed to generate Ethernet reference clock frequencies and is a member of the family of high performance clock solutions from IDT. Using a 25MHz, 18pF parallel resonant crystal, the following frequencies can be generated based on the settings of 4 frequency select pins (SELA[1:0], SELB[1:0]): 625MHz, 312.5MHz, 156.25MHz, and 125MHz. The two banks have their own dedicated frequency select pins and can be independently set for the frequencies mentioned above. The 843252 IDT's 3rd generation low phase noise VCO technology and can achieve 1ps or lower typical rms phase jitter, easily meeting Ethernet jitter requirements. The 843252 is packaged in a small 16-pin TSSOP package.

Key Features

Four differential LVPECL output pairs
VCO frequency: 500MHz – 1GHz
Crystal oscillator interface for each output pair

Specifications

Series	FemtoClock®	Programmabe	Not Verified
Type	Frequency Synthesizer	PLL	Yes
Input	Crystal	Output	LVPECL
Number of Circuits	1	Ratio - Input:Output	1:2
Differential - Input:Output	No/Yes	Frequency - Max	625MHz
Divider/Multiplier	Yes/No	Voltage - Supply	3.135V ~ 3.465V
Operating Temperature	0°C ~ 70°C	Mounting Type	Surface Mount
Base Product Number	843252A