The 8V19N880 is a fully integrated FemtoClock® RF Sampling Clock Generator and Jitter Attenuator designed as a high-performance clock solution for conditioning and frequency/phase management of wireless base station radio equipment boards. The device is optimized to deliver excellent phase noise performance as required in 4G, 5G and including mmWave radio implementations. The device supports JESD204B (subclass 0 and 1) and JESD204C.

A two-stage PLL architecture supports both jitter attenuation and frequency multiplication. The first stage PLL is the jitter attenuator and uses an external VCXO for best possible phase noise characteristics. The second stage PLL locks on the first PLL output signal and synthesizes the target frequency. The second stage PLL can use the internal or an external high-frequency VCO.

The device generates the high-frequency clocks and the low-frequency synchronization signals (SYSREF) from the selected VCO. SYSREF signals are internally synchronized to the clock signals. The integrated signal delay blocks can be used to achieve phase alignment, controlled phase offsets between system reference and clock signals and to align/delay individual output signals. The four redundant inputs are monitored for activity. Four selectable clock switching modes are provided to handle clock input failure scenarios. Auto-lock, individually programmable output frequency dividers, and phase adjustment capabilities are added for flexibility.

The device is configured through a 3/4-wire SPI interface and reports lock and signal loss status in internal registers and via the GPIO[1:0] outputs. Internal status bit changes can also be reported via a GPIO output.

For information regarding evaluation boards and material, please contact your local sales representative.

特長

  • High-performance clock RF sampling clock generator and clock jitter attenuator with support for JESD204B/C
  • Low phase noise: -144.7dBc/Hz (800kHz offset; 491.52MHz)
  • Integrated phase noise of 74fs RMS (12kHz–20MHz, 491.52MHz)
  • Dual-PLL architecture with internal and optional external VCO
  • Eight output channels with a total of 18 outputs
  • Configurable integer clock frequency dividers
  • Clock output frequencies: up to 3932.16MHz (internal VCO) and 6GHz (optional external VCO)
  • Differential, low noise I/O
  • Deterministic phase delay and integrated phase delay circuits
  • Redundant input clock architecture with four inputs and monitors, holdover and input switching
  • SPI 3/4 wire configuration interface
  • Supply voltage: 1.8V (core, outputs) and 3.3V (high performance outputs)
  • Package: 100-CABGA (11 × 11 mm²)
  • Temperature range: -40°C to +95°C (board)

製品選択

発注型名 Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type 購入/サンプル
8V19N880BDGI
Active CABGA 100 I はい Tray
Availability
8V19N880BDGI8
Active CABGA 100 I はい Reel
Availability

ドキュメント&ダウンロード

タイトル 他の言語 分類 形式 サイズ 日付
データシート
8V19N880 Datasheet データシート PDF 2.17 MB
アプリケーションノート、ホワイトペーパー
AN-842 Thermal Considerations in Package Design and Selection アプリケーションノート PDF 495 KB
AN-838 Peak-to-Peak Jitter Calculations アプリケーションノート PDF 115 KB
AN-839 RMS Phase Jitter アプリケーションノート PDF 233 KB
AN-827 Application Relevance of Clock Jitter アプリケーションノート PDF 1.15 MB
AN-815 Understanding Jitter Units アプリケーションノート PDF 565 KB
AN-806 Power Supply Noise Rejection アプリケーションノート PDF 438 KB
AN-805 Recommended Ferrite Beads アプリケーションノート PDF 121 KB
その他資料
RF Timing Family Product Overview 概要 PDF 464 KB
IDT Products for Radio Applications (Japanese) English 製品概要 PDF 6.27 MB
IDT Clock Generation Overview (Japanese) English 概要 PDF 2.19 MB
RF-Grade Clock Jitter Attenuator and Frequency Synthesizer Product Brief 製品概要 PDF 847 KB