- 您现在的位置：买卖IC网 > PDF目录67755 > LC72137 PLL FREQUENCY SYNTHESIZER, 40 MHz, PDIP22 PDF资料下载
参数资料
| 型号： | LC72137 |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 40 MHz, PDIP22 |
| 封装： | SDIP-22 |
| 文件页数： | 7/22页 |
| 文件大小： | 348K |
| 代理商： | LC72137 |
No. 5743-15/22
LC72137, 72137M
IF Counter Structure
The LC72137 IF counter is a 20-bit binary counter, and takes the IF signal from the IFIN pin as its input. The result of
the count can be read out serially, MSB first, from the DO pin.
The IF frequency (Fc) is measured by determining how many pulses were input to the IF counter in the stipulated
measurement time, GT.
Fc =
(C = Fc
× GT)
C: count value (number of pulses)
Sample IF Counter Frequency Calculations
1. For a measurement time (GT) of 32 ms and a count value (C) of 53980 (hexadecimal), which is 342,400 (decimal)
IF frequency (Fc) = 342,400 ÷ 32 ms = 10.7 MHz
2. For a measurement time (GT) of 8 ms and a count value (C) of E10 (hexadecimal), which is 3600 (decimal)
IF frequency (Fc) = 3600 ÷ 8 ms = 450 kHz
C
GT
GT1
GT0
Measurement time
Measurement period (GT) (ms)
Wait time (tWU) (ms)
0
4
3 to 4
0
1
8
3 to 4
1
0
16
3 to 4
1
32
3 to 4
相关PDF资料 |
PDF描述 |
|---|---|
| LC72137M | PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO20 |
| LC72137 | PLL FREQUENCY SYNTHESIZER, 40 MHz, PDIP22 |
| LC72137M | PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO20 |
| LC99403 | SPECIALTY ANALOG CIRCUIT, BGA180 |
| LGDS-300-0-K/S | 1-OUTPUT DC-DC REG PWR SUPPLY MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LC72137_11 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizer |
| LC72137M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizer for Electronic Tuning |
| LC72137MA-AE | 功能描述:时钟合成器/抖动清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
| LC72140 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizers |
| LC72140M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizers |
发布紧急采购，3分钟左右您将得到回复。