参数资料
型号: ACS8947T
厂商: Semtech
文件页数: 11/30页
文件大小: 0K
描述: IC JITTER ATT MULT PLL 48-QFN
标准包装: 1
类型: 时钟/频率发生器,多路复用器
PLL:
主要目的: 3G,以太网,PCI,SONET/SDH,无线系统
输入: LVPECL
输出: CML,LVPECL
电路数: 1
比率 - 输入:输出: 2:4
差分 - 输入:输出: 是/是
频率 - 最大: 625MHz
电源电压: 3.135 V ~ 3.465 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 48-VFQFN 裸露焊盘
供应商设备封装: 48-QFN(7x7)
包装: 托盘
ACS8947T JAM PLL
ADVANCED COMMS & SENSING
FINAL
DATASHEET
Revision 1.00/September 2007 Semtech Corp.
Page 19
www.semtech.com
DC Characteristics
Across all operating conditions, unless otherwise stated.
Notes: (i) Unused differential input terminated to VDD-1.4 V.
(ii) Both pins must remain within the supply voltage, i.e. >VSS and <VDD.
Table 11 VCN/VCP Differential Charge Pump Input/Output Port
Parameter
Symbol
Minimum
Typical
Maximum
Units
Common mode voltage
VCM
1.0
1.25
1.5
V
VCN/VCP linear tuning range
VTUNE
-
±1.2
-
V
Low level output voltage
VOL
GND + 0.2
-
V
High level output voltage
VOH
-
VDD - 0.2
V
Output current (10
μA)
IO
810
12
μA
Output current (40
μA)
IO
32
40
48
μA
Output current (160
μA)
IO
128
160
192
μA
Output current (210
μA)
IO
168
210
252
μA
Table 12 DC Characteristics: LVCMOS Input Ports with Internal Pull-down/LVCMOS Schmitt Input Port with Internal
Pull-up
Parameter
Symbol
Minimum
Typical
Maximum
Units
VIN High
VIH
2-
-
V
VIN Low
VIL
--
0.8
V
Pull-down resistor
RPD
43
-
108
k
Ω
Pull-up resistor (Schmitt Input)
RPU
53
-
113
k
Ω
Input current
IIN
-10
-
+10
μA
Table 13 DC Characteristics: LVPECL Input Port
Parameter
Symbol
Minimum
Typical
Maximum
Units
LVPECL input offset voltage
differential inputs (Note (ii))
VIO_LVPECL
VDD-2.0
-
VDD-0.5
V
Input differential voltage
VID_LVPECL
0.1
-
1.4
V
LVPECL input low voltage
single-ended input (Note (i))
VIL_LVPECL_S
VSS
-VDD-1.5
V
LVPECL input high voltage
single-ended input (Note (i))
VIL_LVPECL_S
VDD-1.3
-
VDD
V
Input high current
input differential voltage VID = 1.4 V
IIH_LVPECL
-10
-
+10
μA
Input low current
input differential voltage VID = 1.4 V
IIL_LVPECL
-10
-
+10
μA
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