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參數(shù)資料
| 型號： | LC72191 |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | PLL Frequency Synthesizer for Electronic Tuning in Car Stereo Tuners |
| 中文描述： | 鎖相環(huán)頻率合成調諧器在汽車音響電子調諧 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 194K |
| 代理商： | LC72191 |
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
t
1
≥
1.5 μs, t
3
≥
1.5 μs
50, 25, 12, 5, .......... 5, 4.5, 2.5, 0.5 kHz
t
1
≥
3.0 μs, t
3
≥
3.0 μs
Serial data I/O (CL)
SC
SF
Input pin
Measurement item
Measurement frequency range
GT (1/0)
S
1
S
2
S
3
1
*
HCTR
Frequency measurement
10 to 60 MHz (sine wave)
24 m/12 ms
0
1
LCTR
Frequency measurement
15 to 500 kHz (sine wave)
24 m/12 ms
0
0
LCTR
Period measurement
1 Hz to 20 kHz (pulse wave)
Two periods/one period
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LC72191JM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizer for Electronic Tuning in Car Stereo Tuners |
| LC72191JMA-AH | 功能描述:時鐘合成器/抖動清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| LC72191M | 制造商:SANYO 制造商全稱: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 制造商全稱:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizers |
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