CDCE62002 - 具有集成双路 VCO 的 4 路输出时钟发生器/抖动消除器

CDCE62002是TI德州仪器公司的一款低抖动（1psecRMS）产品，CDCE62002是具有集成双路 VCO 的 4 路输出时钟发生器/抖动消除器，本站介绍了CDCE62002的封装应用图解、特点和优点、功能等，并给出了与CDCE62002相关的TI元器件型号供参考。

CDCE62002 - 具有集成双路 VCO 的 4 路输出时钟发生器/抖动消除器 - 低抖动（1psecRMS） - 时钟发生器 - 德州仪器

产品描述

The CDCE62002 is a high performance clock generator featuring low output jitter, a high degree of configurability via a SPI interface, and programmable start up modes determined by on-chip EEPROM. Specifically tailored for clocking data converters and high-speed digital signals, the CDCE62002 achieves jitter performance under 0.5 ps RMS10 kHz to 20 MHz integration bandwidth.. It incorporates a synthesizer block with partially integrated loop filter, a clock distribution block including programmable output formats, and an input block featuring an innovative smart multiplexer. The clock distribution block includes two individually programmable outputs that can be configured to provide different combinations of output formats (LVPECL, LVDS, LVCMOS). Each output can also be programmed to a unique output frequency (ranging from 10.94 MHz to 1.175 GHzFrequency range depends on operational mode and output format selected.). If Both outputs are configured in single-ended mode (e.g., LVCMOS), the CDCE62002 supports up to four outputs. The input block includes one universal differential inputs which support frequencies up to 500 MHz and an auxiliary input that can be configured to connect to an external AT-Cut crystal via an on board oscillator block. The smart input multiplexer has two modes of operation, manual and automatic. In manual mode, the user selects the synthesizer reference via the SPI interface. In automatic mode, the input multiplexer will automatically select between the highest priority input clock available.

产品特性

Frequency Synthesizer With PLL/VCO and Partially Integrated Loop Filter
Fully Configurable Outputs Including Frequency and Output Format
Smart Input Multiplexer Automatically Switches Between one of two Reference Inputs.
Multiple Operational Modes Include Clock Generation via Crystal, SERDES Startup Mode, Jitter Cleaning, and Oscillator Based Holdover Mode.
Integrated EEPROM Determines Device Configuration at Power-up.
Excellent Jitter Performance
Integrated Frequency Synthesizer Including PLL, Multiple VCOs, and Loop Filter:
- Full Programmability Facilitates Phase Noise Performance Optimization Enabling Jitter Cleaner Mode
- Programmable Charge Pump Gain and Loop Filter Settings
- Unique Dual-VCO Architecture Supports a Wide Tuning Range 1.750 GHz – 2.356 GHz.
Universal Output Blocks Support up to 2 Differential, 4 Single-Ended, or Combinations of Differential or Single-Ended:
- 0.5 ps RMS (10 kHz to 20 MHz) Output Jitter Performance
- Low Output Phase Noise: –130 dBc/Hz at 1 MHz offset, Fc = 491.52 MHz
- Output Frequency Ranges From 10.94 MHz to 1.175 GHz in Synthesizer Mode
- LVPECL, LVDS and LVCMOS
- Independent Output Dividers Support Divide Ratios for 1, 2, 3, 4, 5, 8, 10, 12, 16, 20, 24 and 32.
Flexible Inputs With Innovative Smart Multiplexer Feature:
- Two Universal Differential Inputs Accept Frequencies from 1 MHz up to 500 MHz (LVPECL), 500 MHz (LVDS), or 250 MHz (LVCMOS).
- One Auxiliary Input Accepts Crystals in the Range of 2MHz–42MHz
- Clock Generator Mode Using Crystal Input
- Smart Input Multiplexer can be Configured to Automatically Switch Between Highest Priority Clock Source Available Allowing for Fail-Safe Operation.
Typical Power Consumption 750mW at 3.3V
Integrated EEPROM Stores Default Settings; Therefore, the Device can Power up in a Known, Predefined State.
Offered in QFN-32 Package
ESD Protection Exceeds 2kV HBM
Industrial Temperature Range –40°C to 85°C
APPLICATIONS
- Data Converter and Data Aggregation Clocking
- Wireless Infrastructure
- Switches and Routers
- Medical Electronics
- Military and Aerospace
- Industrial
- Clock Generation and Jitter Cleaning

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