I2781AG-08SR overview
I2781AG-08SR is a component documented by ON Semiconductor. The PDF description identifies it as "General Purpose EMI Reduction IC JANUARY 2010 ??Rev. 2." This guide condenses the most useful engineering information from the available PDF so that designers and sourcing teams can identify the checks that still need confirmation in the original document.
Datasheet snapshot
- Manufacturer: ON Semiconductor
- Part number: I2781AG-08SR
- Category: IC
- Datasheet length: 8 Pages
Key features noted in the PDF
- Provides up to 15dB of EMI suppression
- FCC approved method of EMI attenuation
- Generates a 1X, 2X, and 4X low EMI spread spectrum clock of the input frequency
- Input frequency range from 3 to 78MHz
- External loop filter for spread % adjustment
- Spreading ranges from ±0.25% to ±5.0%
- Ultra low cycle-to-cycle jitter
Specifications and operating details
The following points were extracted from the PDF text. Check the associated conditions, notes and limits in the complete document before using a value in a design.
- This result in significantly lower system EMI compared to the typical narrow band signal produced by oscillators and most frequency generators.
- Block Diagram Crystal Oscillator Frequency Divider Feedback Divider Phase Detector Modulation Output Divider VCO XIN / CLKIN XOUT FS0 FS1 LF VDD VSS PLL ModOUT Rev.
- The spreading is described as a percentage deviation of the center frequency. (Note: the center frequency is the frequency of the external reference input on CLKIN, Pin 1.) The P2781A is designed for PC peripheral, networking, notebook PC.
- It is optimized for operation between 3 to 78MHz range.
- The Input Frequency Selection Table specifies the input frequency range.
- VDD FS0 ModOUT VSS LF FS1 XOUT XIN/CLKIN P2 78xA +3.3V Modulated 16MHz Clock To target Chip 0.1µF C2 C1 2.2 K Rev.
- Operating Conditions Parameter Description Min Max Unit VDD Supply Voltage 3.0 3.6 V TA Operating Temperature (Ambient Temperature) -40 + 85 ° C C L Load Capacitance 15 pF C IN Input Capacitance 7 pF (Test condition: All parameters are mea.
Topics covered by the datasheet
The document includes sections related to:
- Features
- Applications
- Package Information
Engineering review checklist
- Check resistance value, tolerance, temperature coefficient and long-term stability over the operating range.
- Derate continuous power for ambient temperature and verify pulse or surge capability separately.
- Match the land pattern, termination finish and current-sense routing to the exact package option.
Always confirm values against the latest manufacturer-controlled datasheet, especially when qualifying a substitute or releasing a production BOM.
View the complete PDF and model record
Open the I2781AG-08SR datasheet and model details to review the complete PDF, document pages and available product information.
Source attribution
Adapted from the PDF associated with this DigiCamel model page.
Source model URL: https://www.digicamel.com/product.php?slug=i2781ag-08sr-on-semiconductor