FemtoClock Jitter Attenuator or Clock Generator
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Overview
Description
The RC32112A regenerates and distributes ultra-low jitter clock outputs and features up to 6 independent frequency domains that can be either locked to the external reference clock or locked to a free-run crystal or oscillator. Digital PLLs (DPLLs) support hitless reference switching between references from redundant timing sources. The device supports multiple independent timing channels for: IEEE 1588 clock synthesis; SyncE clock generation; jitter attenuation and radio clock generation including SYSREF generation for converters. Input-to-input, input-to-output and output-to-output phase skew can all be precisely managed. The device outputs ultra-low-jitter clocks that can directly synchronize SERDES running at up to 56Gbps; as well as CPRI/OBSAI, SONET/SDH ADC/DAC. The device is ideal for use in 100G/200G/400G/800G telecom switch line cards, fabric cards and wireless small cell applications.
Features
- Two timing channels and six independent frequency domains
- Output jitter below 100fs RMS
- Digital PLLs (DPLLs) lock to any frequency from 0.5kHz to 1GHz
- DPLLs / Digitally Controlled Oscillators (DCOs) generate any frequency from 0.5Hz to 1GHz
- DCO outputs can be aligned in phase and frequency with the outputs of any DPLL or DCO
- Can be used as a jitter attenuator, clock generator, or synchronizer
- Reference monitors qualify/disqualify references depending on LOS, activity, frequency monitoring and/or LOS input pins
- Automatic reference selection state machines select the active reference for each DPLL based on the reference monitors, priority tables, revertive / non-revertive and other programmable settings
- Device requires a crystal oscillator or fundamental-mode crystal: 25MHz to 54MHz
- The device can configure itself automatically after reset via:
- Internal Customer-programmable One-Time Programmable memory
- Standard external I2C EPROM via separate I2C Master Port
Comparison
Applications
Documentation
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| Type | Title | Date |
| Datasheet | PDF 2.54 MB | |
| Application Note | PDF 704 KB | |
| Application Note | PDF 164 KB | |
| Guide | PDF 2.93 MB | |
| Overview | PDF 320 KB | |
| Application Note | PDF 1.92 MB | |
| Application Note | PDF 2.13 MB | |
| Guide | PDF 10.53 MB | |
| Application Note | PDF 1.62 MB | |
| Application Note | PDF 354 KB | |
| Application Note | PDF 390 KB | |
| Application Note | PDF 880 KB | |
| Guide | PDF 2.40 MB | |
| Application Note | PDF 584 KB | |
| Product Change Notice | PDF 301 KB | |
| Application Note | PDF 162 KB | |
| Application Note | PDF 739 KB | |
| Application Note | PDF 633 KB | |
| Product Change Notice | PDF 123 KB | |
| Product Change Notice | PDF 435 KB | |
| Application Note | PDF 479 KB | |
| Application Note | PDF 442 KB | |
| Application Note | PDF 566 KB | |
| Application Note | PDF 976 KB | |
| Application Note | PDF 659 KB | |
| Application Note | PDF 324 KB | |
| Schematic | PDF 206 KB | |
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Design & Development
Software & Tools
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
| -40 to 85°C | Tray | Get Samples, | |
| -40 to 85°C | Tape & Reel |
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Support
Renesas Samples
Select an orderable part number:
| Orderable Part ID | Sample |
|---|---|
| RC32112A000GN2#BB0 | Availability |
Videos & Training
IDT ClockMatrix™ Timing Solution for 100Gbps Interface Speeds (IEEE 1588, OTN, and SyncE)
Introducing the IDT ClockMatrix™ family of devices - high-performance, precision timing solutions designed to simplify clock designs for applications with up to 100 Gbps interface speeds.
They can be used anywhere in a system to perform critical timing functions, such as clock generation, frequency translation, jitter attenuation and phase alignment. A range of devices in the family support BBU, OTN, SyncE, synthesizer and jitter attenuator applications with several density options for each.
For more information, visit www.idt.com/clockmatrix.
Video List