- 您现在的位置：买卖IC网 > PDF目录79832 > LC72191JM PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO24 PDF资料下载
参数资料
| 型号： | LC72191JM |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO24 |
| 封装： | MFP-24 |
| 文件页数： | 4/16页 |
| 文件大小： | 318K |
| 代理商： | LC72191JM |
Structure of the General-Purpose Counter
The LC72191 general-purpose counter is a 20-bit binary counter.
The value of the counter can be read out, msb first, from the DO pin.
When the general-purpose counter is used for frequency measurement, GT selects the measurement period to be one of
two periods, 12 or 24 ms. The frequency of the signal input to the HCTR or LCTR pin can be measured by determining
the number of pulses input to the general-purpose counter during the measurement period.
When the general-purpose counter is used for period measurement, the period of the signal input to the LCTR pin can be
measured by determining the number of check signal (900 kHz) cycles input to the general-purpose counter during one
or two periods of the signal input to the LCTR pin.
The general-purpose counter is started by setting CTEN to 1 in the serial data. While the serial data is acquired internally
in the LC72191 at the point the CE signal goes from high to low, the input to the HCTR or LCTR pin must be provided
within 2 ms after CE goes low.
No. 3985-12/16
LC72191, 72191M, 72191JM
Item
Xtal
7.2 MHz
3.6 MHz
Time base clock
8 Hz
4 Hz
System clock
400 kHz
200 kHz
Frequency measurement time
24/12 ms
48/24 ms
Frequency measurement check signal
900 kHz
450 kHz
Reference frequencies
100, 50, 25, ......... 10, 9, 5, 1 kHz
50, 25, 12, 5, .......... 5, 4.5, 2.5, 0.5 kHz
Serial data I/O (CL)
t1 ≥ 1.5 s, t3 ≥ 1.5 s
t1 ≥ 3.0 s, t3 ≥ 3.0 s
SC
SF
Input pin
Measurement item
Measurement frequency range
GT (1/0)
S1
1
*
HCTR
Frequency measurement
10 to 60 MHz (sine wave)
24 m/12 ms
S2
01
LCTR
Frequency measurement
15 to 500 kHz (sine wave)
24 m/12 ms
S3
00
LCTR
Period measurement
1 Hz to 20 kHz (pulse wave)
Two periods/one period
相关PDF资料 |
PDF描述 |
|---|---|
| LK4003-6PD2 | 1-OUTPUT 150 W AC-DC PWR FACTOR CORR MODULE |
| LK4003-6PD3T | 1-OUTPUT 150 W AC-DC PWR FACTOR CORR MODULE |
| LK4003-6V2 | 1-OUTPUT 150 W AC-DC PWR FACTOR CORR MODULE |
| LK4301-7D9B2 | 1-OUTPUT 150 W AC-DC PWR FACTOR CORR MODULE |
| LK4301-7D9 | 1-OUTPUT 150 W AC-DC PWR FACTOR CORR MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LC72191JMA-AH | 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 |
| LC72191M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizer for Electronic Tuning in Car Stereo Tuners |
| LC72191M-TLM-E | 制造商:ON Semiconductor 功能描述:PLL FREQUENCY SYNTHESIZER - Tape and Reel |
| LC7219M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizers |
| LC7220 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
发布紧急采购，3分钟左右您将得到回复。