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ICS91719 Datasheet(PDF) 1 Page - Integrated Circuit Systems |
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ICS91719 Datasheet(HTML) 1 Page - Integrated Circuit Systems |
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1 / 10 page  Integrated Circuit Systems, Inc. ICS91719 0506D—08/16/04 Block Diagram Pin Configuration 16-pin TSSOP Features: • ICS91719 is a Spread Spectrum Clock targeted for Mobile PC and LCD panel applications. Generates an EMI optimized clock signal (EMI peak reduction of 7- 14 dB on 3rd-19th harmonics) through use of Spread Spectrum techniques. • ICS91719 focuses on the lower input frequency range of 14.318 to 80.00 MHz with a spread modulation of 20kHz to 40kHz. Specifications: • Supply Voltages: VDD = 3.3V ±0.3V • Frequency range: 14.318 MHz ≤ Fin ≥ 80 MHz • Cyc to Cyc jitter: <150ps • Output duty cycle 40/60% (worst case) • Guarantees +85°C operational condition. • 16-pin TSSOP package 4.4mm body (173mils), 0.65 mm pitch • 14.318 MHz crystal input or reference clock input • 27MHz, 48MHz and 66MHz reference clock input Low EMI, Spread Modulating, Clock Generator Notes: ** Internal pull-down ^ Internal pull-up CLK CL REFOUT KOUT OUT PD# PD# SPREAD# SPREAD# CLKIN CLKIN PLL1 PLL1 Spread Spread Spectr Spectrum um SD SDAT REF_STOP A SCLK SCLK FS_IN0:1 Control Control Logic Logic Config. Config. Reg. Reg. REF Voltage Select Functionality Input Select Functionality GND 116 VDDREF X1 _CLKIN 215 VDDREF_SEL_2.5V/3.3V# ^ X2 314 REF_OUT/VDDREF_SEL_1.8V * * GNDA 413 **REF_Stop VDDA 512 ^PD# VDD 611 SCLK GND 710 SDATA * * CLKOUT/FS_IN0 89 ^SPREAD_ENABLE/FS_IN1 Pin14 Pin15 REF Voltage 0 0 N/A 0 1 1.8V 1 0 2.5V 1 1 3.3V FS_IN1 FS_IN0 MHZ Default Spread % 0 0 14.318 in 27.00 out -0.8% downspread 0 1 14.318 in/out -0.8% downspread 1 0 27.00 in/out -0.8% downspread 1 1 48.00 in/out 66.66 in/out -0.8% downspread |
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