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84021

Obsolete

260MHz, Crystal-to-LVCMOS/LVTTL Frequency Synthesizer

Overview

The 84021 is a general purpose, Crystal-to-LVCMOS/LVTTL High Frequency Synthesizer. The 84021 has a selectable TEST_CLK or crystal input. The VCO operates at a frequency range of 620MHz to 780MHz. The VCO frequency is programmed in steps equal to the value of the input reference or crystal frequency. The VCO and output frequency can be programmed using the serial or parallel interface to the configuration logic.

84021 - Block Diagram
84021 - Pinout
84021 - Block Diagram
84021 - Pinout
  • Two LVCMOS/LVTTL outputs
  • Selectable crystal oscillator interface or LVCMOS/LVTTL TEST_CLK
  • Output frequency range: 103.3MHz to 260MHz
  • Crystal input frequency range: 14MHz to 40MHz
  • VCO range: 620MHz to 780MHz
  • Parallel or serial interface for programming counter and output dividers
  • RMS period jitter: 14.7ps (typical), (N ÷ 4, VDDO = 3.3V±5%)
  • RMS phase jitter at 155.52MHz, using a 38.88MHz crystal (12kHz to 20MHz): 2.61ps (typical)
    Offset                 Noise Power
    100Hz.................-87.9 dBc/Hz
    1kHz...................-115.8 dBc/Hz
    10kHz.................-124.2 dBc/Hz
    100kHz...............-127.7 dBc/Hz
  • Full 3.3V or mixed 3.3V core/2.5V or 1.8V output supply voltage
  • 0°C to 70°C ambient operating temperature
  • Industrial temperature information available upon request
  • Available in lead-free (RoHS 6) package

Documentation

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

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Models
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Model - IBIS
84021 IBIS Model
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  1. RZG2UL - Unbalanced enable for IRQ 69

    ... 84.819046] x11: 00000000000001b9 x10: ffff800010fd9980 [ 84.824338] x9 : 00000000fffff000 x8 : ffff800010f81980 [ 84.829631] x7 : ffff800010fd9980 x6 : 0000000000000000 [ 84.834924] x5 : 000000000000bff4 x4 : 0000000000000000 [ 84.840217] x3 : 0000000000000001 x2 : 0000000000000000 [ 84.845509] x1 : 0000000000000000 x0 : ffff800010f74700 [ 84.850802] Call trace: [ 84.853242] __enable_irq+0x4c/0x80 [ 84.856716] enable ...

    Oct 16, 2024
  2. How to use emwin library properly

    Hi, teams.   I have ported emWin library to my project, and create a new diplay driver for my board. To test display, I copied very simple codes from examples like follows: GUI_Init(); GUI_SetColor(GUI_WHITE); GUI_SetBkColor(GUI_BLACK); GUI_Clear(); GUI_FillCircle(40,40,40); GUI_Init ...

    Jan 9, 2020
  3. RZG2UL - Unbalanced enable for IRQ 69

    ... 84.819046] x11: 00000000000001b9 x10: ffff800010fd9980 [ 84.824338] x9 : 00000000fffff000 x8 : ffff800010f81980 [ 84.829631] x7 : ffff800010fd9980 x6 : 0000000000000000 [ 84.834924] x5 : 000000000000bff4 x4 : 0000000000000000 [ 84.840217] x3 : 0000000000000001 x2 : 0000000000000000 [ 84.845509] x1 : 0000000000000000 x0 : ffff800010f74700 [ 84.850802] Call trace: [ 84.853242] __enable_irq+0x4c/0x80 [ 84.856716] enable ...

    Oct 16, 2024