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參數(shù)資料
| 型號(hào)： | LC72148V |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO24 |
| 封裝： | SSOP-24 |
| 文件頁(yè)數(shù)： | 7/21頁(yè) |
| 文件大?。?/td> | 170K |
| 代理商： | LC72148V |
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Structure of the General-Purpose Counter
No. 6974-15/21
LC72148V
HCTR
1
2
LCTR
(FIF)
(T)
CTS1
CTS0
0–3
4–7
8–11
12–15
16–19
GT1, GT0
GT
S1
L
S
B
M
S
B
S2
S3
CTE
DO pin
One period/two period
extraction circuit
4/8/32/64 msec
Check signal: 900 kHz
Input signal
switching gate
General-purpose counter
(20-bit binary counter)
C = FIF
× GT
C = (1/T)
÷ 900 kHz
CTS1
CTS0
Input pin
Measurement mode
Frequency range
Input sensitivity
S1
1
*
HCTR
Frequency
0.4 to 25.0 MHz
40 mVrms *1
S2
0
1
LCTR
Frequency
10 to 500 kHz
40 mVrms *1
S3
0
LCTR
Period
1.0 to 20
× 103 Hz
(pulse)
*1 CTC = 0 : 40 mVrms
CTC = 1 : 70 mVrms
—: No rating (not guaranteed)
( ): Actual performance (provided for reference purposes)
CTC is the input sensitivity switching data; when CTC is 1, the input sensitivity is degraded.
However, the actual performance will be:
HCTR
→ 20 to 40 mV rms (frequency: 10.7 MHz)
LCTR
→ 20 to 30 mV rms (frequency: 450 kHz)
CTP: Pulling down the input is disabled (when CTE is 0) by setting CTP to 1.
CTP must be set to 1 at least 4 ms before CTE is set to 1. If the counter is not used, CTP must be left set to 0. The wait
time is reduced 1 to 2 ms when CTP is set to 1.
HCTR: Minimum input sensitivity rating f [MHz]
CTC
0.4
≤ f < 8
8
≤ f < 12
12
≤ f ≤ 25
0 (Normal mode)
40 mVrms
(0.1 to 5 mVrms)
1 (Degraded mode)
—
70 mVrms
—
(20 to 40 mVrms)
LCTR: Minimum input sensitivity rating f [kHz]
CTC
10
≤ f < 400
400
≤ f ≤ 500
0 (Normal mode)
40 mVrms
20 mVrms
(0.1 to 4 mVrms)
1 (Degraded mode)
—
70 mVrms
(20 to 30 mVrms)
GT1
GT0
Frequency measurement mode
Period measurement
Measurement time
Wait time
mode
0
4 ms
3 to 4 ms
1 period
0
1
8
1
0
32
7 to 8 ms
2 periods
1
64
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LC72148V-MPB-E | 制造商:ON Semiconductor 功能描述:PLL FREQUENCY SYNTHESIZER - Ammo Pack 制造商:ON Semiconductor 功能描述:Phase Locked Loops - PLL |
| LC72148V-TLM-E | 功能描述:時(shí)鐘合成器/抖動(dòng)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 |
| LC7215 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:MW/LW PLL Frequency Synthesizers |
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| LC72151VS-MPB-E | 制造商:ON Semiconductor 功能描述:PLL FREQUENCY SYNTHESIZER - Ammo Pack |
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