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I2040BG-08-ST bảng dữ liệu(PDF) 1 Page - PulseCore Semiconductor |
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I2040BG-08-ST bảng dữ liệu(HTML) 1 Page - PulseCore Semiconductor |
1 / 8 page November 2006 P2040B rev 0.2 Notice: The information in this document is subject to change without notice. PulseCore Semiconductor Corporation 1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018 www.pulsecoresemi.com LCD Panel EMI Reduction IC Features • Provides up to 15dB of EMI suppression • FCC approved method of EMI attenuation • Generates a low EMI spread spectrum clock of the input frequency • 30MHz to 100MHz input frequency range • Optimized for 32.5MHz, 54MHz, 65MHz, 81MHz, pixel clock frequencies • Internal loop filter minimizes external components and board space • 8 selectable spread ranges, up to +/- 2.0% • SSON# control pin for spread spectrum enable and disable options • Low cycle-to-cycle jitter • 3.3V operating voltage • Ultra low power CMOS design • Supports most mobile graphic accelerator and LCD timing controller specifications • Available in 8 pin SOIC and TSSOP Packages. Product Description The P2040B is a selectable spread spectrum frequency modulator designed specifically for digital flat panel applications. The P2040B reduces electromagnetic interference (EMI) at the clock source which provides system wide reduction of EMI of all clock dependent signals. The P2040B allows significant system cost savings by reducing the number of circuit board layers and shielding that are traditionally required to pass EMI regulations. The P2040B uses the most efficient and optimized modulation profile approved by the FCC and is implemented in a proprietary all digital method. The P2040B modulates the output of a single PLL in order to “spread” the bandwidth of a synthesized clock and, more importantly, decreases the peak amplitudes of its harmonics. This results in significantly lower system EMI compared to the typical narrow band signal produced by oscillators and most frequency generators. Lowering EMI by increasing a signal’s bandwidth is called “spread spectrum clock generation”. Applications The P2040B is targeted towards digital flat panel applications for Notebook PCs, Palm-size PCs, Office Automation Equipments and LCD Monitors. Block Diagram Loop Filter Output Divider Modulation VDD SR0 VSS ModOUT CLKIN Frequency Divider Feedback Divider Phase Detector VCO PLL CP1 CP0 SSON# |
Số phần tương tự - I2040BG-08-ST |
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Mô tả tương tự - I2040BG-08-ST |
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