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Active: In Production.

Data Sheet

FULL DATA SHEET (PDF, 316kB) Download   E-Mail

Description

The MAX9450/MAX9451/MAX9452 clock generators provide high-precision clocks for timing in SONET/SDH systems or Gigabit Ethernet systems. The MAX9450/MAX9451/MAX9452 can also provide clocks for the high-speed and high-resolution ADCs and DACs in 3G base stations. Additionally, the devices can also be used as a jitter attenuator for generating high-precision CLK signals. The MAX9450/MAX9451/MAX9452 feature an integrated VCXO. This configuration eliminates the use of an external VCXO and provides a cost-effective solution for generating high-precision clocks. The MAX9450/MAX9451/MAX9452 feature two differential inputs and clock outputs. The inputs accept LVPECL, LVDS, differential signals, and LVCMOS. The input reference clocks range from 8kHz to 500MHz. The MAX9450/MAX9451/MAX9452 offer LVPECL, HSTL, and LVDS outputs, respectively. The output range is up to 160MHz, depending on the selection of crystal. The input and output frequency selection is implemented through the I²C or SPI™ interface. The MAX9450/MAX9451/MAX9452 feature clock output jitter less than 0.8ps RMS (in a 12kHz to 20MHz band) and phase-noise attenuation greater than -130dBc/Hz at 100kHz. The phase-locked loop (PLL) filter can be set externally, and the filter bandwidth can vary from 1Hz to 20kHz. The MAX9450/MAX9451/MAX9452 feature an input clock monitor with a hitless switch. When a failure is detected at the selected reference clock, the device can switch to the other reference clock. The reaction to the recovery of the failed reference clock can be revertive or nonrevertive. If both reference clocks fail, the PLL retains its nominal frequency within a range of ±20ppm at +25°C. The MAX9450/MAX9451/MAX9452 operate from 2.4V to 3.6V supply and are available in 32-pin TQFP packages with exposed pads.

An evaluation kit is available:  MAX9450EVKIT  

Key Features		Applications/Uses
Integrated VCXO Provides a Cost-Effective Solution for High-Precision Clocks 8kHz to 500MHz Input Frequency Range 15MHz to 160MHz Output Frequency Range I²C or SPI Programming for the Input and Output Frequency Selection PLL Lock Range > ±60ppm Two Differential Outputs with Three Types of Signaling: LVPECL, LVDS, or HSTL Input Clock Monitor with Hitless Switch Internal Holdover Function within ±20ppm of the Nominal Frequency Low Output CLK Jitter: < 0.8ps RMS in the 12kHz to 20MHz Band Low Phase Noise > -130dBc at 100kHz, > -140dBc at 1MHz		10-Gigabit Network Routers and Switches 3G Cellular Phone Base Stations General Jitter Attenuation SONET/SDH Systems

Diagram

Functional Diagram

Application Notes

Application Note 3920: Component Selection and Performance Test for the MAX945x High-Precision CLK Generators - MAX9450, MAX9451, MAX9452

Evaluation Kits

MAX9450EVKIT

Reliability Reports

Reliability Report: MAX9450.pdf MAX9451.pdf Show FIT data for: MAX9450 MAX9451 MAX9452 Request Reliability Report for: MAX9452

Software/Models

none

Ordering Information

Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-13 of 13

MAX9450	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9450EHJ+			Active	TQFP-EP;32 pin;51.8 mm² Outline Drawing: 21-0079 (PDF) Land Pattern: 90-0326 (PDF) Use pkgcode/variation: H32E+6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9450EHJ+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9450EHJ			Active	TQFP-EP;32 pin;51.8 mm² Outline Drawing: 21-0079 (PDF) Land Pattern: 90-0326 (PDF) Use pkgcode/variation: H32E-6*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9450EHJ-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9451	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9451EVKIT+			Active	Land Pattern: Not Available		See data sheet
MAX9451EHJ			Active	TQFP-EP;32 pin;51.8 mm² Outline Drawing: 21-0079 (PDF) Land Pattern: 90-0326 (PDF) Use pkgcode/variation: H32E-6*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9451EHJ-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9451EHJ+			Active	TQFP-EP;32 pin;51.8 mm² Outline Drawing: 21-0079 (PDF) Land Pattern: 90-0326 (PDF) Use pkgcode/variation: H32E+6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9451EHJ+T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9452	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX9452EHJ			Active	TQFP-EP;32 pin;51.8 mm² Outline Drawing: 21-0079 (PDF) Land Pattern: 90-0326 (PDF) Use pkgcode/variation: H32E-6*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX9452EHJ-T			Active	Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX9452EHJ+			Active	TQFP-EP;32 pin;51.8 mm² Outline Drawing: 21-0079 (PDF) Land Pattern: 90-0326 (PDF) Use pkgcode/variation: H32E+6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX9452EHJ+T			Active	TQFP-EP;32 pin;51.8 mm² Outline Drawing: 21-0079 (PDF) Land Pattern: 90-0326 (PDF) Use pkgcode/variation: H32E+6*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

More Information

New Product Press Release 2006-08-17

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