参数资料
型号: ICS843004AGILFT
厂商: IDT, Integrated Device Technology Inc
文件页数: 12/19页
文件大小: 0K
描述: IC SYNTHESIZER LVPECL 24-TSSOP
标准包装: 2,500
系列: HiPerClockS™, FemtoClock™
类型: 频率合成器
PLL: 带旁路
输入: 晶体
输出: LVPECL
电路数: 1
比率 - 输入:输出: 1:4
差分 - 输入:输出: 无/是
频率 - 最大: 226.66MHz
除法器/乘法器: 是/无
电源电压: 2.375 V ~ 3.465 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 24-TSSOP
包装: 带卷 (TR)
其它名称: 843004AGILFT
ICS843004AGI REVISION A FEBRUARY 19, 2010
2
2010 Integrated Device Technology, Inc.
ICS843004I Data Sheet
FEMTOCLOCK LVCMOS/CRYSTAL-TO-3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
Table 1. Pin Descriptions
NOTE: Pulldown refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Number
Name
Type
Description
1, 2
nQ1, Q1
Output
Differential output pair. LVPECL interface levels.
3, 22
VCCO
Power
Output supply pins.
4, 5
Q0, nQ0
Output
Differential output pair. LVPECL interface levels.
6
MR
Input
Pulldown
Active HIGH Master Reset. When logic HIGH, the internal dividers are reset
causing the true outputs Qx to go low and the inverted outputs nQx to go high.
When logic LOW, the internal dividers and the outputs are enabled.
LVCMOS/LVTTL interface levels.
7
nPLL_SEL
Input
Pulldown
Selects between the PLL and TEST_CLK as input to the dividers. When LOW,
selects PLL (PLL Enable). When HIGH, deselects the reference clock (PLL
Bypass). LVCMOS/LVTTL interface levels.
8, 18
nc
Unused
No connect.
9VCCA
Power
Analog supply pin.
10, 12
F_SEL0,
F_SEL1
Input
Pulldown
Frequency select pins. LVCMOS/LVTTL interface levels.
11
VCC
Power
Core supply pin.
13,
14
XTAL_OUT,
XTAL_IN
Input
Parallel resonant crystal interface. XTAL_OUT is the output, XTAL_IN is the
input.
15, 19
VEE
Power
Negative supply pins.
16
TEST_CLK
Input
Pulldown
Single-ended clock input. LVCMOS/LVTTL interface levels.
17
nXTAL_SEL
Input
Pulldown
Selects between the single-ended TEST_CLK or crystal interface as the PLL
reference source. When HIGH, selects TEST_CLK. When LOW, selects XTAL.
LVCMOS/LVTTL interface levels.
20, 21
nQ3, Q3
Output
Differential output pair. LVPECL interface levels.
23, 24
Q2, nQ2
Output
Differential output pair. LVPECL interface levels.
Symbol
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
CIN
Input Capacitance
4pF
RPULLDOWN Input Pulldown Resistor
51
k
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