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參數(shù)資料
型號: AD9548/PCBZ
廠商: Analog Devices Inc
文件頁數(shù): 23/112頁
文件大?。?/td> 0K
描述: BOARD EVAL FOR AD9548
產品變化通告: AD9548 Mask Change 20/Oct/2010
設計資源: AD9548 Schematic
AD9548 BOM
AD9548 Eval Brd Layers
標準包裝: 1
主要目的: 計時,時鐘發(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:
AD9548
Data Sheet
Rev. E | Page 18 of 112
TYPICAL PERFORMANCE CHARACTERISTICS
fR = input reference clock frequency; fO = clock frequency; fSYS = SYSCLK input frequency; fS = internal system clock frequency; LBW = DPLL
loop bandwidth; PLL off = SYSCLK PLL bypassed; PLL on = SYSCLK PLL enabled; ICP = SYSCLK PLL charge pump current; LF = SYSCLK
PLL loop filter. AVDD, AVDD3, and DVDD at nominal supply voltage, fS = 1 GHz, ICP = automatic mode, LF = internal, unless otherwise noted.
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
100
1k
10k
100k
1M
10M
100M
PH
A
SE
N
O
ISE
(d
B
c
/H
z)
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (PHASE NOISE):
5kHz TO 20MHz: 173fs (–75.4dBc)
20kHz TO 80MHz: 315fs (–70.2dBc) (EXTRAPOLATED)
08022-
068
Figure 3. Additive Phase Noise (Output Driver = LVPECL),
fR = 19.44 MHz, fO = 155.52 MHz,
LBW = 1 kHz, fSYS = 1 GHz, PLL Off
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
100
1k
10k
100k
1M
10M
100M
PH
A
SE
N
O
ISE
(d
B
c
/H
z)
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (PHASE NOISE):
5kHz TO 20MHz: 333fs (–69.8dBc)
20kHz TO 80MHz: 430fs (–67.6dBc) (EXTRAPOLATED)
08022-
056
Figure 4. Additive Phase Noise (Output Driver = LVPECL),
fR = 19.44 MHz, fO = 155.52 MHz,
LBW = 1 kHz, fSYS = 50 MHz (Crystal), PLL On
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
100
1k
10k
100k
1M
10M
100M
PH
A
SE
N
O
ISE
(d
B
c
/H
z)
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (PHASE NOISE):
5kHz TO 20MHz: 103fs (–74.0dBc)
20kHz TO 80MHz: 160fs (–70.1dBc)
08022-
066
Figure 5. Additive Phase Noise (Output Driver = LVPECL),
fR = 19.44 MHz, fO = 311.04 MHz,
LBW = 1 kHz, fSYS = 1 GHz, PLL Off
–160
–150
–140
–130
–120
–110
–100
–90
–80
–70
100
1k
10k
100k
1M
10M
100M
PH
A
SE
N
O
ISE
(d
B
c
/H
z)
FREQUENCY OFFSET (Hz)
INTEGRATED RMS JITTER (PHASE NOISE):
5kHz TO 20MHz: 310fs (–64.4dBc)
20kHz TO 80MHz: 330fs (–63.9dBc)
08022-
067
Figure 6. Additive Phase Noise (Output Driver = LVPECL),
fR = 19.44 MHz, fO = 311.04 MHz,
LBW = 1 kHz, fSYS = 50 MHz (Crystal), PLL On
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