Features
- Jitter below 100fs RMS maximum (10kHz to 20MHz)
- PLL core consists of fractional-feedback Analog PLL (APLL)
- APLL frequency independent of input / crystal frequency
- Operates as a frequency synthesizer or Digitally Controlled Oscillator (DCO)
- DCO has tuning granularity of < 1ppb
- Programmable status output
- 4 differential / 8 LVCMOS outputs
- Any frequency from 10MHz to 1GHz (180MHz for LVCMOS)
- Programmable output buffer supports HCSL (DC-coupled), LVDS/LVPECL/CML (AC-coupled) or two LVCMOS
- Differential output swing is selectable: 400mV to 800mV
- Output clock phase individually adjustable in 100ps steps
- Output Enable input with programmable effect
- Supports up to 1MHz I2C or up to 20MHz SPI serial processor port
- Can configure itself automatically after reset via internal customer-definable One-Time Programmable (OTP) memory with up to four different configurations
- 4 × 4 mm 28-VFQFPN package
RC22514A - Block Diagram
Description
The RC22514A is a small, low-power timing component designed to be placed immediately adjacent to a PHY, switch, ASIC or FPGA that requires several reference clocks with jitter performance less than 100fs (max). The RC22514A can act as a frequency synthesizer to locally generate the reference clock or as a DCO for frequency margining or OTN clock applications, relying on an internal crystal reference source.
Parameters
| Attributes | Value |
|---|---|
| Diff. Outputs | 4 |
| Outputs (#) | 4 |
| Output Type | LVCMOS, HCSL, LVDS |
| Output Freq Range (MHz) | 10 - 1000 |
| Inputs (#) | 0 |
| Output Banks (#) | 4 |
| Core Voltage (V) | 1.8V, 3.3V |
| Output Voltage (V) | 1.8 |
| Feedback Input | No |
| Product Category | FemtoClock 2, Ultra-Low Jitter Clocks (<300 fs RMS), Extreme Performance Clocks (<150 fs RMS), Network Synchronization, PDH and SONET/SDH Clocks, Programmable Clocks |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| VFQFPN | 4.0 x 4.0 x 1.5 | 28 | 0.4 |
Renesas Boards & Kits
RC32514A-EVK
Active
FemtoClock™ 2 Evaluation Kit
This is the evaluation kit for the RC32514A and RC22514A. The board will come populated with an RC32514. The RC22514 is functionally a subset of the RC32514A, so this board can be used to evaluate either or both of the devices. Refer to the device's web pages for additional details on the... Read More
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