The 8V19N492 is a fully integrated FemtoClock® NG jitter attenuator and clock synthesizer 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 GSM, WCDMA, LTE, and LTE-A radio board implementations. The device supports JESD204B subclass 0 and 1 clocks.

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 VCXO-PLL output signal and synthesizes the target frequency.

The device supports the clock generation of high-frequency clocks from the selected VCO and low-frequency synchronization signals (SYSREF). SYSREF signals are internally synchronized to the clock signals. Delay functions exist for achieving alignment and controlled phase delay between system reference and clock signals and to align/delay individual output signals. The two 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 8V19N492 is ideal for driving converter circuits in wireless infrastructure, radar/imaging, and instrumentation/medical applications. The device is a member of the high-performance clock family from IDT.

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

Features

  • High-performance clock RF-PLL with support for JESD204B
  • Optimized for low phase noise: -150dBc/Hz (800kHz offset; 245.76MHz clock)
  • Integrated phase noise of 63fs RMS typical (12k–20MHz).
  • Dual-PLL architecture
  • 1st-PLL stage with external VCXO for clock jitter attenuation
  • 2nd-PLL with internal FemtoClockNG PLL: 2949.12MHz
  • Five output channels with a total of 15 outputs
  • Configurable integer clock frequency dividers
  • Supported clock output frequencies include: 2949.12, 1474.56, 983.04, 491.52, 245.76, and 122.88 MHz
  • Low-power LVPECL/LVDS outputs support configurable signal amplitude
  • Phase delay circuits
  • Redundant input clock architecture with two inputs and
  • SYSREF generation modes include internal and external trigger mode for JESD204B
  • Supply voltage: 3.3V
  • Package: 10 × 10 mm, 88-VFQFPN
  • Temperature range: -40°C to +105°C (Case)

Product Options

注文可能な製品ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type 購入/サンプル
8V19N492NLGI Active NLG88P2 VFQFPN 88 I Yes Tray
Availability
8V19N492NLGI8 Active NLG88P2 VFQFPN 88 I Yes Reel
Availability

技術資料

タイトル 他の言語 タイプ 形式 サイズ 日付
データシート
8V19N492 Datasheet Datasheet PDF 1.24 MB
ユーザーガイド
8V19N49x Hardware Design Guide Guide PDF 570 KB
アプリケーションノート、ホワイトペーパー
AN-952 8V19N480_490 Design Guide for JESD204B Output Phase Alignment and Termination Application Note PDF 834 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB
AN-839 RMS Phase Jitter Application Note PDF 149 KB
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB
AN-815 Understanding Jitter Units Application Note PDF 476 KB
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB
AN-806 Power Supply Noise Rejection Application Note PDF 353 KB
PCN / PDN
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility Product Change Notice PDF 983 KB
その他資料
Timing Solutions Products Overview Overview PDF 4.11 MB
RF Timing Family Product Overview Overview PDF 723 KB
8V19N49x RF Sampling Clocks with Jitter Attenuation Overview Overview PDF 1.21 MB
IDT Products for Radio Applications (日本語) English Product Brief PDF 2.34 MB
IDT Clock Generation Overview (日本語) English Overview PDF 1.83 MB
IDT Clock Distribution Overview (日本語) English Overview PDF 3.79 MB
RF-Grade Clock Jitter Attenuator and Frequency Synthesizer Product Brief Product Brief PDF 847 KB