The 1562B is a very high performance monolithic phaselocked loop (PLL) frequency synthesizer. Utilizing ICS's advanced CMOS mixed-mode technology, the 1562B provides a low cost solution for high-end video clock generation. The 1562B has differential video clock outputs (CLK+ and CLK-) that are compatible with industry standard video DAC. Another clock output, LOAD, is provided whose frequency is derived from the main clock by a programmable divider. An additional clock output is available, LD/N2, which is derived from the LOAD frequency and whose modulus may also be programmed. Operating frequencies are fully programmable with direct control provided for reference divider, prescaler, feedback divider and post-scaler. Reset of the pipeline delay on Brooktree RAMDAC?s may be performed under register control. Outputs may also be set to desired states to facilitate circuit board testing.


  • Two programming options: ICS1562B-001 (Parallel Programming) ICS1562B-201 (Serial Programming)
  • Supports high-resolution graphics - CLK output to 260 MHz, with 400 MHz options available
  • Eliminates need for multiple ECL output crystal oscillators
  • Fully programmable synthesizer capability - not just clock multiplier
  • Circuitry included for reset of Brooktree RAMDAC pipeline delay
  • VRAM shift clock generation capability (-201 option only)
  • External feedback loop capability (-201 option only)
  • Compact - 16-pin 0.150" skinny SOIC package
  • Fully backward compatible to ICS1562

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Package Buy Sample
1562BM-001 Obsolete SOIC 16 C No Tube Package Info
1562BM-201 Obsolete SOIC 16 C No Tube Package Info
1562BM-201LF Obsolete SOIC 16 C Yes Tube Package Info
1562BM-201LFT Obsolete SOIC 16 C Yes Reel Package Info

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
1562B DATASHEET Datasheet PDF 417 KB
PCN# : A1305-01 Gold Wire to Copper Wire Product Change Notice PDF 148 KB
1562B DOS Register Editor Misc ZIP 23 KB