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FemtoClock® Jitter Attenuator & Multiplier Frequency Translator W/LVPECL Outputs
24-TSSOP(0.173",4.40mmWidth)Manufacturer:
Renesas Electronics Corporation
Mfr.Part #:
813253BGLF
Datasheet:
Series:
FemtoClock®
Programmabe:
Not Verified
Type:
Fanout Distribution, Frequency Translator, Jitter Attenuator, Voltage Controlled Crystal Oscillator (VCXO)
PLL:
Yes with Bypass
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The 813253 is a PLL based synchronous clock generator that is optimized for Gigabit Ethernet and PCI Express®™ clock jitter attenuation and frequency translation. The device contains two internal frequency multiplication stages that are cascaded in series. The first stage is a VCXO PLL that is optimized to provide reference clock jitter attenuation. The second stage is a FemtoClock® frequency multiplier that provides the low jitter, high frequency Gigabit Ethernet or PCI Express®™ output clock. Pre-divider and output divider multiplication ratios are selected using device selection control pins. The multiplication ratios are optimized to support most common clock rates used in Gigabit Ethernet and PCI Express® applications. The VCXO requires the use of an external, inexpensive pullable crystal. The VCXO uses external passive loop filter components which allows configuration of the PLL loop bandwidth and damping characteristics.
Series | FemtoClock® | Programmabe | Not Verified |
Type | Fanout Distribution, Frequency Translator, Jitter Attenuator, Voltage Controlled Crystal Oscillator (VCXO) | PLL | Yes with Bypass |
Input | HCSL, LVDS, LVHSTL, LVPECL, SSTL | Output | LVPECL |
Number of Circuits | 1 | Ratio - Input:Output | 2:3 |
Differential - Input:Output | Yes/Yes | Frequency - Max | 156.25MHz |
Divider/Multiplier | Yes/Yes | Voltage - Supply | 2.375V ~ 3.465V |
Operating Temperature | 0°C ~ 70°C | Mounting Type | Surface Mount |
Base Product Number | 813253B |
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