Overview
Description
The 844021-01 is an Ethernet clock generator that uses an 18pF parallel resonant crystal over the range of 24.5MHz – 34MHz. For Ethernet applications, a 25MHz crystal is used. The 844021-01 has excellent <1ps phase jitter performance, over the 1.875MHz – 20MHz integration range. The 844021-01 is packaged in a small 8-pin TSSOP, making it ideal for use in systems with limited board space.
Features
- One Differential LVDS output
- Crystal oscillator interface, 18pF parallel resonant crystal (24.5MHz – 34MHz)
- Output frequency range: 122.5MHz – 170MHz
- VCO range: 490MHz – 680MHz
- RMS phase jitter @ 125MHz, using a 25MHz crystal (1.875MHz – 20MHz): 0.32ps (typical) @ 3.3V
- 3.3V or 2.5V operating supply
- 0°C to 70°C ambient operating temperature
- Available in lead-free (RoHS 6) package
Comparison
Applications
Design & Development
Models
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.
Models
| Model - IBIS | ZIP 63 KB | |
1 item
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I want to find a replacement for 844021BG-01LF, input 25MHz clock, output 125MHz LVDS clock
I want to find a replacement for 844021BG-01LF, input 25MHz clock, output 125MHz LVDS clock
Mar 9, 2022