参数资料
型号: ICS487G-25LFT
厂商: IDT, Integrated Device Technology Inc
文件页数: 2/7页
文件大小: 0K
描述: IC QUAD PLL FOR DTV 16-TSSOP
标准包装: 2,500
类型: 锁相环路(PLL)
PLL:
输入: 时钟,晶体
输出: LVCMOS
电路数: 1
比率 - 输入:输出: 2:5
差分 - 输入:输出: 无/无
频率 - 最大: 48MHz
除法器/乘法器: 无/无
电源电压: 3.135 V ~ 3.465 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 16-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 16-TSSOP
包装: 带卷 (TR)
其它名称: 487G-25LFT
ICS487-25
QUAD PLL FOR DTV
CLOCK SYNTHESIZER
IDT / ICS QUAD PLL FOR DTV
2
ICS487-25
REV B 092109
Pin Assignment
ACLK Output Selection Table
Note: When S1 and S0 are switched, all other output
clocks will remain stable throughout the transition.
Pin Descriptions
12
1
11
2
10
3
9
X1/ICLK
4
S0
5
S1
6
VDD
7
48M
8
VDD
PDTS
GND
VDD
GND
ACLK
20M
33.0M
16
15
14
13
24.576M
X2
16 pin (173 mil) TSSOP
S1
S0
ACLK (MHz)
0
18.432
0
1
16.9344
1
0
12.288
1
18.432
Pin
Number
Pin
Name
Pin
Type
Pin Description
1
X1/ICLK
Input
Crystal connection. Connect to 27 MHz crystal or clock input.
2
S0
Input
Select pin 0. Determines ACLK output frequency per table above.
Internal pull up resistor.
3
S1
Input
Select pin 1. Determines ACLK output frequency per table above.
Internal pull up resistor.
4
48M
Output
48 MHz clcok output. Weak internal pull-down when tri-state.
5
VDD
Power
Connect to +3.3 V.
6
GND
Power
Connect to ground.
7
20M
Output
20 MHz clock output. Weak internal pull-down when tri-state.
8
24.576M
Output
24.576 MHz clock output. Weak internal pull-down when tri-state.
9
ACLK
Output
Audio clock output. Determined by table above. Weak internal
pull-down when tri-state
10
33.0M
Output
33.0 MHz clock output. Weak internal pull-down when tri-state.
11
GND
Power
Connect to ground.
12
VDD
Power
Connect to +3.3 V.
13
GND
Power
Connect to ground.
14
PDTS
Input
Powers down entire chip and tri-states outputs when low. Internal
pull-up resistor.
15
VDD
Power
Connect to +3.3 V.
16
X2
Input
Connect to 27 MHz crystal or float for clock input.
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