参数资料
型号: ICS9EX21831AKLFT
厂商: IDT, Integrated Device Technology Inc
文件页数: 15/17页
文件大小: 0K
描述: IC FANOUT/BUFFER DIFF 72VFQFN
标准包装: 1,000
系列: PCI Express® (PCIe)
类型: 扇出缓冲器(分配),多路复用器
PLL:
主要目的: PCI Express(PCIe)
输入: 时钟
输出: HCSL
电路数: 1
比率 - 输入:输出: 2:18
差分 - 输入:输出: 是/是
频率 - 最大: 167MHz
电源电压: 3.135 V ~ 3.465 V
工作温度: 0°C ~ 70°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-VFQFPN(10x10)
包装: 带卷 (TR)
IDT
Eighteen Output Differential Buffer w/2 input mux for PCIe Gen1/2/3
1678D—03/23/12
9EX21831
Eighteen Output Differential Buffer w/2 input mux for PCIe Gen1/2/3
7
Electrical Characteristics - Skew and Differential Jitter Parameters
TA = TCOM; Supply Voltage VDD/VDDA = 3.3 V +/-5%
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
NOTES
CLK_IN, DIF[x:0]
tSPO_PLL
Input-to-Output Skew in PLL mode
nominal value @ 25°C, 3.3V
900
1000 1125
ps
1,2,4,5,8
CLK_IN, DIF[x:0]
tPD_BYP
Input-to-Output Skew in Bypass mode
nominal value @ 25°C, 3.3V
4000 4700 5200
ns
1,2,3,5,8
CLK_IN, DIF[x:0]
tDSPO_PLL
Input-to-Output Skew Varation in PLL mode
across voltage and temperature
|250|
|350|
ps
1,2,3,5,8
CLK_IN, DIF[x:0]
tDSPO_BYP
Input-to-Output Skew Varation in Bypass mode
across voltage and temperature
|800|
|900|
ps
1,2,3,5,8
CLK_IN, DIF[x:0]
tDTE
Random Differential Tracking error beween two
9EX devices in Hi BW Mode
25
ps
(rms)
1,2,3,5,8
CLK_IN, DIF[x:0]
tDSSTE
Random Differential Spread Spectrum Tracking
error beween two 9EX devices in Hi BW Mode
20
75
ps
1,2,3,5,8
DIF{x:0]
tSKEW_ALL
Output-to-Output Skew across all outputs
(Common to Bypass and PLL mode)
100
150
ps
1,2,3,8
PLL Jitter Peaking
jpeak-hibw
LOBW#_BYPASS_HIBW = 1
0
2
2.5
dB
7,8
PLL Jitter Peaking
jpeak-lobw
LOBW#_BYPASS_HIBW = 0
0
2.3
3
dB
7,8
PLL Bandwidth
pllHIBW
LOBW#_BYPASS_HIBW = 1
2
2.3
4
MHz
8,9
PLL Bandwidth
pllLOBW
LOBW#_BYPASS_HIBW = 0
0.7
0.8
1.4
MHz
8,9
Duty Cycle
tDC
Measured differentially, PLL Mode
45
50
55
%
1
Duty Cycle Distortion
tDCD
Measured differentially, Bypass Mode
@100MHz
-1
0
1
%
1,10
PLL mode
27
50
ps
1,11
Additive Jitter in Bypass Mode
12
50
ps
1,11
Notes for preceding table:
6.t is the period of the input clock
7 Measured as maximum pass band gain. At frequencies within the loop BW, highest point of magnification is called PLL jitter peaking.
8. Guaranteed by design and characterization, not 100% tested in production.
9 Measured at 3 db down or half power point.
10 Duty cycle distortion is the difference in duty cycle between the output and the input clock when the device is operated in bypass mode.
11 Measured from differential waveform
5 Measured with scope averaging on to find mean value.
Jitter, Cycle to cycle
tjcyc-cyc
1 Measured into fixed 2 pF load cap. Input to output skew is measured at the first output edge following the corresponding input.
2 Measured from differential cross-point to differential cross-point.
3 All Bypass Mode Input-to-Output specs refer to the timing between an input edge and the specific output edge created by it.
4 This parameter is deterministic for a given device
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