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| 型号： | CY28447LFXCT |
| 厂商： | Silicon Laboratories Inc |
| 文件页数： | 8/22页 |
| 文件大小： | 0K |
| 描述： | IC CLOCK CALISTOGA CK410M 72QFN |
| 标准包装： | 2,000 |
| 类型： | 时钟/频率发生器 |
| PLL： | 是 |
| 主要目的： | Intel CPU 服务器 |
| 输入： | LVTTL，晶体 |
| 输出： | HCSL，LVCMOS |
| 电路数： | 1 |
| 比率 - 输入:输出： | 3:21 |
| 差分 - 输入:输出： | 无/是 |
| 频率 - 最大： | 200MHz |
| 电源电压： | 3.135 V ~ 3.465 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 72-VFQFN 裸露焊盘 |
| 供应商设备封装： | 72-QFN（10x10） |
| 包装： | 带卷 (TR) |
CY28447
...................... Document #: 38-07724 Rev *C Page 16 of 22
AC Electrical Specifications
Parameter
Description
Condition
Min.
Max.
Unit
Crystal
TDC
XIN Duty Cycle
The device will operate reliably with input
duty cycles up to 30/70 but the REF clock
duty cycle will not be within specification
47.5
52.5
%
TPERIOD
XIN Period
When XIN is driven from an external
clock source
69.841
71.0
ns
TR / TF
XIN Rise and Fall Times
Measured between 0.3VDD and 0.7VDD
–10.0
ns
TCCJ
XIN Cycle to Cycle Jitter
As an average over 1-
s duration
–
500
ps
LACC
Long-term Accuracy
Measured at crossing point VOX
–
300
ppm
CPU at 0.7V
TDC
CPUT and CPUC Duty Cycle
Measured at crossing point VOX
45
55
%
TPERIOD
100-MHz CPUT and CPUC Period
Measured at crossing point VOX
9.997001
10.00300
ns
TPERIOD
133-MHz CPUT and CPUC Period
Measured at crossing point VOX
7.497751
7.502251
ns
TPERIOD
166-MHz CPUT and CPUC Period
Measured at crossing point VOX
5.998201
6.001801
ns
TPERIOD
200-MHz CPUT and CPUC Period
Measured at crossing point VOX
4.998500
5.001500
ns
TPERIODSS
100-MHz CPUT and CPUC Period, SSC Measured at crossing point VOX
9.997001
10.05327
ns
TPERIODSS
133-MHz CPUT and CPUC Period, SSC Measured at crossing point VOX
7.497751
7.539950
ns
TPERIODSS
166-MHz CPUT and CPUC Period, SSC Measured at crossing point VOX
5.998201
6.031960
ns
TPERIODSS
200-MHz CPUT and CPUC Period, SSC Measured at crossing point VOX
4.998500
5.026634
ns
TPERIODAbs
100-MHz CPUT and CPUC Absolute
period
Measured at crossing point VOX
9.912001
10.08800
ns
TPERIODAbs
133-MHz CPUT and CPUC Absolute
period
Measured at crossing point VOX
7.412751
7.587251
ns
TPERIODAbs
166-MHz CPUT and CPUC Absolute
period
Measured at crossing point VOX
5.913201
6.086801
ns
TPERIODAbs
200-MHz CPUT and CPUC Absolute
period
Measured at crossing point VOX
4.913500
5.086500
ns
TPERIODSSAbs 100-MHz CPUT and CPUC Absolute
period, SSC
Measured at crossing point VOX
9.912001
10.13827
ns
TPERIODSSAbs 133-MHz CPUT and CPUC Absolute
period, SSC
Measured at crossing point VOX
7.412751
7.624950
ns
TPERIODSSAbs 166-MHz CPUT and CPUC Absolute
period, SSC
Measured at crossing point VOX
5.913201
6.116960
ns
TPERIODSSAbs 200-MHz CPUT and CPUC Absolute
period, SSC
Measured at crossing point VOX
4.913500
5.111634
ns
TCCJ
CPUT/C Cycle to Cycle Jitter
Measured at crossing point VOX
–85[2]
ps
TCCJ2
CPU2_ITP Cycle to Cycle Jitter
Measured at crossing point VOX
–
125[2]
ps
LACC
Long-term Accuracy
Measured at crossing point VOX
–
300
ppm
TSKEW
CPU1 to CPU0 Clock Skew
Measured at crossing point VOX
–100
ps
TSKEW2
CPU2_ITP to CPU0 Clock Skew
Measured at crossing point VOX
–150
ps
TR / TF
CPUT and CPUC Rise and Fall Time
Measured from VOL = 0.175 to
VOH = 0.525V
175
700
ps
TRFM
Rise/Fall Matching
Determined as a fraction of
2*(TR – TF)/(TR + TF)
–20
%
T
R
Rise Time Variation
–
125
ps
T
F
Fall Time Variation
–
125
ps
Note:
2. Measured with one REF on.
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