參數(shù)資料
型號(hào): AD9548/PCBZ
廠商: Analog Devices Inc
文件頁數(shù): 80/112頁
文件大小: 0K
描述: BOARD EVAL FOR AD9548
產(chǎn)品變化通告: AD9548 Mask Change 20/Oct/2010
設(shè)計(jì)資源: AD9548 Schematic
AD9548 BOM
AD9548 Eval Brd Layers
標(biāo)準(zhǔn)包裝: 1
主要目的: 計(jì)時(shí),時(shí)鐘發(fā)生器
嵌入式:
已用 IC / 零件: AD9548
主要屬性: 62.5 ~ 450 MHz 輸出頻率
次要屬性: SPI 和 I2C 兼容控制端口
已供物品:
Data Sheet
AD9548
Rev. E | Page 7 of 112
REFERENCE INPUTS (REFA/REFAA TO REFD/REFDD)
Table 8.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
DIFFERENTIAL OPERATION
Frequency Range
Sinusoidal Input
10
750
MHz
LVPECL Input
1
750 × 106
Hz
LVDS Input
1
750 × 106
Hz
Minimum Input Slew Rate
40
V/μs
Minimum limit imposed for jitter
performance
Common-Mode Input Voltage
2
V
Internally generated
Differential Input Voltage Sensitivity
±65
mV
Minimum differential voltage across
pins required to ensure switching
between logic levels; the
instantaneous voltage on either pin
must not exceed the supply rails
Input Resistance
25
k
Input Capacitance
3
pF
Minimum Pulse Width High
620
ps
Minimum Pulse Width Low
620
ps
SINGLE-ENDED OPERATION
Frequency Range (CMOS)
1
250 ×106
Hz
Minimum Input Slew Rate
40
V/μs
Minimum limit imposed for jitter
performance
Input Voltage High (VIH)
1.2 V to 1.5 V Threshold Setting
0.9
V
1.8 V to 2.5 V Threshold Setting
1.2
V
3.0 V to 3.3 V Threshold Setting
1.9
V
Input Voltage Low (VIL)
1.2 V to 1.5 V Threshold Setting
0.27
V
1.8 V to 2.5 V Threshold Setting
0.5
V
3.0 V to 3.3 V Threshold Setting
1.0
V
Input Resistance
45
k
Input Capacitance
3
pF
Minimum Pulse Width High
1.5
ns
Minimum Pulse Width Low
1.5
ns
REFERENCE MONITORS
Table 9.
Parameter
Min
Typ
Max
Unit
Test Conditions/Comments
REFERENCE MONITORS
Reference Monitor
Loss of Reference Detection
Time
1.2
sec
Calculated using the nominal phase detector period
(NPDP = R/fREF)1
Frequency Out-of Range Limits
9.54 × 107
0.1
Δf/fREF
Programmable (lower bound subject to quality of SYSCLK)
Validation Timer
0.001
65.535
sec
Programmable in 1 ms increments
Redetect Timer
0.001
65.535
sec
Programmable in 1 ms increments
1
fREF is the frequency of the active reference; R is the frequency division factor determined by the R-divider.
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