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參數(shù)資料
| 型號(hào)： | ADCLK948/PCBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 6/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVALUATION FOR ADCLK948 |
| 設(shè)計(jì)資源： | ADCLK948 Eval Brd Schematic ADCLK948 Gerber Files ADCLK948 BOM |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | SIGe |
| 主要目的： | 計(jì)時(shí)，時(shí)鐘緩沖器 / 驅(qū)動(dòng)器 / 接收器 / 變換器 |
| 已用 IC / 零件： | ADCLK948 |
| 主要屬性： | 2 個(gè)可選輸入，8 輸出 |
| 次要屬性： | LVPECL 輸出邏輯 |
| 已供物品： | 板 |
ADCLK948
Rev. A | Page 3 of 12
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
Typical (Typ column) values are given for VCC VEE = 3.3 V and TA = 25°C, unless otherwise noted. Minimum (Min column) and maximum
(Max column) values are given over the full VCC VEE = 3.3 V ± 10% and TA = 40°C to +85°C variation, unless otherwise noted.
Table 1. Clock Inputs and Outputs
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions/Comments
DC INPUT CHARACTERISTICS
Input Common Mode Voltage
VICM
VEE + 1.5
VCC 0.1
V
Input Differential Range
VID
0.4
3.4
V p-p
±1.7 V between input pins
Input Capacitance
CIN
0.4
pF
Input Resistance
Single-Ended Mode
50
Ω
Differential Mode
100
Ω
Common Mode
50
kΩ
Open VTx
Input Bias Current
20
μA
Hysteresis
10
mV
DC OUTPUT CHARACTERISTICS
Output Voltage High Level
VOH
VCC 1.26
VCC 0.76
V
50 Ω to (VCC 2.0 V)
Output Voltage Low Level
VOL
VCC 1.99
VCC 1.54
V
50 Ω to (VCC 2.0 V)
Output Voltage, Single Ended
VO
610
960
mV
VOH VOL, output static
Reference Voltage
VREF
Output Voltage
(VCC + 1)/2
V
500 μA to +500 μA
Output Resistance
235
Ω
Table 2. Timing Characteristics
Parameter
Symbol
Min
Typ
Max
Unit
Test Conditions/Comments
AC PERFORMANCE
Maximum Output Frequency
4.5
4.8
GHz
See Figure 4 for differential output voltage vs.
frequency, >0.8 V differential output swing
Output Rise Time
tR
40
75
90
ps
20% to 80% measured differentially
Output Fall Time
tF
40
75
90
ps
Propagation Delay
tPD
175
210
245
ps
VICM = 2 V, VID = 1.6 V p-p
Temperature Coefficient
50
fs/°C
Output-to-Output Skew1
9
25
ps
Part-to-Part Skew
45
ps
VID = 1.6 V p-p
Additive Time Jitter
Integrated Random Jitter
28
fs rms
BW = 12 kHz 20 MHz, CLK = 1 GHz
Broadband Random Jitter2
75
fs rms
VID = 1.6 V p-p, 8 V/ns, VICM = 2 V
Crosstalk-Induced Jitter3
90
fs rms
CLOCK OUTPUT PHASE NOISE
Absolute Phase Noise
Input slew rate > 1 V/ns (see Figure 11,
the phase noise plot, for more details)
fIN = 1 GHz
119
dBc/Hz
@100 Hz offset
134
dBc/Hz
@1 kHz offset
145
dBc/Hz
@10 kHz offset
150
dBc/Hz
@100 kHz offset
150
dBc/Hz
>1 MHz offset
1 The output skew is the difference between any two similar delay paths while operating at the same voltage and temperature.
2 Measured at the rising edge of the clock signal; calculated using the SNR of the ADC method.
3 This is the amount of added jitter measured at the output while two related, asynchronous, differential frequencies are applied to the inputs.
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