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CY28346ZCT 参数 Datasheet PDF下载

CY28346ZCT图片预览
型号: CY28346ZCT
PDF下载: 下载PDF文件 查看货源
内容描述: 时钟合成器,差分CPU输出 [Clock Synthesizer with Differential CPU Outputs]
分类和应用: 晶体外围集成电路光电二极管时钟
文件页数/大小: 19 页 / 221 K
品牌: SPECTRALINEAR [ SPECTRALINEAR INC ]
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CY28346  
Absolute Maximum Ratings[5]  
Storage Temperature:................................ –65qC to + 150qC  
Operating Temperature:.................................... 0qC to +85qC  
Maximum Power Supply:................................................ 3.5V  
Input Voltage Relative to VSS:.............................. VSS – 0.3V  
Input Voltage Relative to VDDQ or AVDD: .............VDD + 0.3V  
Current Accuracy[6]  
Parameter  
Iout  
Conditions  
Configuration  
Load  
Min.  
Max.  
VDD = nominal (3.30V)  
M0 = 0 or 1 and Rr (see Table 1)  
Nominal test load for given  
configuration  
–7% + 7%  
Inom Inom  
Iout  
V
DD = 3.30 5%  
All combinations of M0 or 1 and Rr Nominal test load for given  
(see Table 1) configuration  
–12% + 12%  
Inom Inom  
DC Parameters (VDD = VDDA = 3.3V 5%, TA = 0°C to +70°C)  
Parameter  
Description  
Dynamic Supply Current  
Power-down Supply Current  
Input Pin Capacitance  
Output Pin Capacitance  
Pin Inductance  
Conditions  
All frequencies at maximum values[7]  
Min.  
Typ.  
Max.  
Unit  
mA  
mA  
pF  
IDD3.3V  
280  
IPD3.3V  
PD# asserted  
Note 8  
CIN  
5
6
COUT  
LPIN  
pF  
7
nH  
pF  
CXTAL  
Crystal Pin Capacitance  
Measured from the XIN or XOUT pin to ground  
30  
36  
42  
AC Parameters (VDD = VDDA = 3.3V 5%, TA = 0°C to +70°C)  
66 MHz 100 MHz  
133 MHz  
200 MHz  
Parameter  
Crystal  
Description  
Min.  
Max.  
Min.  
Max.  
Min.  
Max.  
Min.  
Max. Unit Notes  
TDC  
XIN Duty Cycle  
47.5  
52.5  
71.0  
47.5  
52.5  
47.5  
52.5  
71.0  
47.5  
52.5  
71.0  
%
9, 10, 11  
TPERIOD  
XIN period  
69.84  
69.84  
71.0 69.84  
69.84  
ns  
9, 12,  
13, 10  
VHIGH  
VLOW  
TR / TF  
TCCJ  
XIN HIGH Voltage  
0.7VDD VDD  
0.7VDD VDD 0.7VDD VDD 0.7VDD VDD  
V
V
XIN LOW Voltage  
0
0.3VDD  
10.0  
0
0.3VDD  
10.0  
0
0.3VDD  
10.0  
0
0.3VDD  
10.0  
XIN Rise and Fall Times  
XIN Cycle to Cycle Jitter  
ns  
ps  
14  
500  
500  
500  
500  
12, 15,  
10  
CPU at 0.7V Timing  
TDC  
CPUT and CPUC Duty  
Cycle  
45  
55  
45  
55  
45  
55  
45  
55  
5.1  
100  
%
ns  
ps  
15, 16,  
19  
TPERIOD  
CPUT and CPUC  
Period  
14.85  
15.3  
100  
9.85  
10.2  
100  
7.35  
7.65  
100  
4.85  
15, 16,  
19  
TSKEW  
Any CPU to CPU Clock  
Skew  
12, 15,  
16  
Notes:  
5. Multiple Supplies: The Voltage on any input or I/O pin cannot exceed the power pin during power-up. Power supply sequencing is NOT required.  
6. Inom refers to the expected current based on the configuration of the device.  
7. All outputs loaded as per maximum capacitive load table.  
8. Absolute value = ((Programmed CPU Iref) × (2)) + 10 mA.  
9. This parameter is measured as an average over 1 Ps duration, with a crystal center frequency of 14.31818 MHz.  
10. When Xin is driven from an external clock source.  
11. This is required for the duty cycle on the REF clock out to be as specified. The device will operate reliably with input duty cycles up to 30/70 but the REF clock  
duty cycle will not be within data sheet specifications.  
12. All outputs loaded as perTable 9 below.  
13. Probes are placed on the pins and measurements are acquired at 1.5V for 3.3V signals (see test and measurement set-up section of this data sheet).  
14. Measured between 0.2V and 0.7V  
.
DD  
15. This measurement is applicable with Spread ON or Spread OFF.  
DD  
16. Measured at crossing point (Vx) or where subtraction of CLK–CLK# crosses 0V Measured from V = 0.175V to V = 0.525V.  
OH  
OL  
17. Measured from V = 0.175V to V = 0.525V.  
OL  
OH  
18. Determined as a fraction of 2*(Trise–Tfall)/ (Trise+Tfall).  
19. Test load is Rta = 33.2:, Rd = 49.9:.  
Rev 1.0,November 24, 2006  
Page 14 of 19