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参数资料
| 型号： | LC72148V |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 40 MHz, PDSO24 |
| 封装： | SSOP-24 |
| 文件页数： | 7/21页 |
| 文件大小： | 170K |
| 代理商： | LC72148V |
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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: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 |
| LC7215 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:MW/LW PLL Frequency Synthesizers |
| LC72151V | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizer for Electronic Tuning in Car Audio Systems |
| LC72151VS-MPB-E | 制造商:ON Semiconductor 功能描述:PLL FREQUENCY SYNTHESIZER - Ammo Pack |
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