Features
- Ultra-low jitter performance: Achieve exceptional precision with jitter performance as low as 70fs at 312.5MHz within a wide 12kHz to 20MHz integration range in jitter attenuator mode
- Versatile power supply options: Operate the device with ease using a single 1.8V power supply while ensuring compatibility with a 3.3V level interface at SCL/SDA pin if the VDDD33_SERIAL is 3.3V
- SyncE support: Seamlessly integrate with SyncE technology for enhanced synchronization capabilities
- DCO mode support: Leverage the benefits of the DCO mode for added flexibility and efficiency
- Configurable startup options: Load configurations at startup effortlessly with the support of an external EEPROM, streamlining your setup process
- Flexible communication interfaces: Choose between SPI or I2C communication protocols for seamless device integration
- Multiple OTP configurations: Benefit from up to 4 OTP configurations for startup
- Clock input monitoring: Monitor clock inputs with precision, ensuring reliable and stable performance
- Phase slope limit (ns/s): Support smooth phase adjust under DPLL control
- Wide loop bandwidth: Enjoy the flexibility of adjusting the loop bandwidth from 0.5Hz to 18kHz, catering to various application needs
- Combo mode support: Flexible frequency support
Description
The RC323xxA (RC32308A and RC32312A) is a high-performance, small form factor, low-power jitter attenuator with network synchronization capabilities, belonging to Renesas' high-performance FemtoClock™ 3 family. It supports Synchronous Ethernet (SyncE) for network-based synchronization and outputs ultra-low jitter clocks that can directly synchronize SerDes running at up to 112G pulse amplitude modulation (PAM), as well as CPRI/OBSAI, SONET/SDH, and ADC/DAC. This makes it an excellent choice for 100G/200G/400G/800G telecom switch line cards, fabric cards, wireline infrastructure, data center equipment, and instrumentation applications. It allows locking to external reference clocks or free-run crystals/oscillators and supports hitless reference switching between redundant timing sources. The device is versatile, supporting timing channels for SyncE clock generation, jitter attenuation, and precise phase skew management for input-to-input, input-to-output, and output-to-output configurations.
Parameters
| Attributes | Value |
|---|---|
| Inputs (#) | 3 |
| Input Type | Crystal, LVPECL, HCSL, LVDS, CML, LVCMOS |
| Product Category | FemtoClock 3, Ultra-Low Jitter Clocks (<300 fs RMS), Extreme Performance Clocks (<150 fs RMS), Jitter Attenuators, Network Synchronization, PDH and SONET/SDH Clocks, Programmable Clocks |
| Diff. Outputs | 8, 12 |
| Output Type | HCSL, LVDS, LVCMOS |
| Output Voltage (V) | 1.8 |
| Input Freq (MHz) | 0.001 - 1000 |
| Phase Jitter Typ RMS (ps) | 0.025 |
| Output Freq Range (MHz) | 0.001 - 1000 |
| Fractional Output Dividers (#) | 3 |
| Core Voltage (V) | 1.8V, 3.3V |
| Output Banks (#) | 8, 12 |
| Loop Bandwidth Range (Hz) | 0.05 - 1000 |
| Xtal Freq (KHz) | 25 - 80 |
| Advanced Features | SyncE, DCO, Phase Adjust, External Feedback, Hitless Switching |
| 105°C Max. Case Temp. | 0 |
Application Block Diagrams
 | 1600G Fixed Form Factor Switch Elevate networking efficiency with cost-effective stackable switches for precise timing and flexibility. |
Additional Applications
- For 800Gbps SerDes Ethernet application
- Jitter attenuation for 10/25/40/100/200/400/800 Gbps Ethernet PHYs or switches
- Synchronous Ethernet (SyncE) equipment
- Data center Top of Rack (ToR) and leaf switch
- Ethernet switches and routers
- Medical image system
- Test and measurement