The 8101925I is a high performance, low jitter/low phase noise VCXO from IDT. The 8101925I works in conjunction with a 25MHz pullable crystal to generate an LVCMOS/LVTTL output clock of 25MHz from an input clock of 5MHz or 19.44MHz. The output range is ±100ppm around the nominal crystal frequency. The device is packaged in a small 16 TSSOP package and is ideal for use on space constrained boards.


  • One single-ended LVCMOS or LVTTL output
  • One single-ended clock accepts the following input types: LVCMOS, LVTTL
  • Output frequency: 25MHz
  • Accepts 5MHz or 19.44MHz with auto input frequency detect
  • Absolute pull range (APR): ±100ppm
  • RMS phase jitter. (12kHz – 5MHz): 0.4ps (typical)
  • Full 3.3V supply, or 3.3V core/2.5V output supply
  • -40°C to 85°C ambient operating temperature
  • Available in lead-free (RoHS 6) package

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Package Buy Sample
8101925AGILF Obsolete TSSOP 16 I Yes Tube Package Info
8101925AGILFT Obsolete TSSOP 16 I Yes Reel Package Info

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
8101925 Datasheet Datasheet PDF 279 KB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-841 Pullable Crystal Selection and VCXO Tuning Application Note PDF 334 KB
AN-831 The Crystal Load curve Application Note PDF 395 KB
AN-849 Loop Filter Component Selection for VCXO Based PLLs Application Note PDF 218 KB
AN-848 VCXO - Crystal Selection Application Note PDF 222 KB
AN-847 VCXO - Absolute Pull Range Application Note PDF 155 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 495 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 442 KB
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 115 KB
AN-839 RMS Phase Jitter Application Note PDF 233 KB
AN-830 Quartz Crystal Drive Level Application Note PDF 143 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 136 KB
AN-801 Crystal-High Drive Level Application Note PDF 202 KB
AN-806 Power Supply Noise Rejection Application Note PDF 438 KB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
PDN# : CQ-15-05 Market Declined Quarterly PDN Product Discontinuation Notice PDF 623 KB
PCN# : TB1403-01 Changed in Carrier Tape, Plastic Reel and Quantity per Reel on TSSOP-14, TSSOP-16 Product Change Notice PDF 663 KB
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB
Timing Solutions Products Overview Overview PDF 4.11 MB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB