CY25818 Cypress Semiconductor, CY25818 Datasheet
CY25818
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CY25818 Summary of contents
Page 1
... Separate modulated and unmodulated clocks • Accepts clock, crystal, and resonator inputs • Down spread modulation • Power-down function • Low-power dissipation — CY25818 = 33 mW-typ @ 8 MHz — CY25818 = 56 mW-typ @ 16 MHz — CY25819 = 36 mW-typ @ 16 MHz — CY25819 = 63 mW-typ @ 32 MHz • Low cycle-to-cycle jitter — ...
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... The input frequency range is 8–16 MHz for the CY25818 and 16–32 MHz for the CY25819. Both products accept external clock, crystal, or ceramic resonator inputs. The CY25818/19 provide separate modulated (SSCLK) and unmodulated reference (REFCLK) clock outputs which are the same frequency as the input clock frequency ...
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... The Modulation Rates of SSCG clocks are generally referred to in terms of frequency, and fmod = 1/Tmod. The input clock frequency, fin, and the internal divider determine the Modulation Rate. In the case of CY25818/19 devices, the (Spread Spectrum) Modulation Rate, fmod, is given by the following formula: fmod = f /DR ...
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... CCJref Cycle-to-Cycle Jitter Characteristics Curves The following curves demonstrate the characteristic behavior of the CY25818/19 when tested over a number of environ- mental and application specific parameters. These are typical performance curves and are not meant to replace any parameter specified in Table 4 and Table 5. ...
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... SSCG Profiles CY25818/19 SSCG products use a non-linear “optimized” frequency profile as shown in Figure 6 and Figure 7. The use of Cypress proprietary “optimized” frequency profile maintains flat energy distribution over the fundamental and higher order harmonics. This results in additional EMI reduction in electronic systems. ...
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... S08.15 STANDARD PKG. SZ08.15 LEAD FREE PKG. SEATING PLANE 0.061[1.549] 0.068[1.727] 0.004[0.102] 0.004[0.102] 0°~8° 0.0098[0.249] CY25818/19 www.DataSheet4U.com Product Flow MAX. PART # 0.010[0.254] X 45° 0.016[0.406] 0.0075[0.190] 0.016[0.406] 0.0098[0.249] ...
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... Document History Page Document Title: CY25818/19 Spread Spectrum Clock Generator Document Number: 38-07362 Issue REV. ECN NO. Date ** 112462 03/21/02 *A 122701 12/28/02 *B 448097 See ECN Document #: 38-07362 Rev. *B Orig. of Change Description of Change OXC New Data Sheet RBI Added power up requirements to maximum rating information. RGL ...