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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 |
| 文件頁數(shù)： | 18/21頁 |
| 文件大?。?/td> | 170K |
| 代理商： | LC72148V |
No. 6974-6/21
LC72148V
Continued from preceding page.
Pin No.
Symbol
Type
Function
Pin circuit
Input/output shared-function pins
In output mode, the circuits are complementary outputs.
The I/O direction is determined by I/O-4 and I/O-5 in the serial data.
When the data is 0: input port
When 1: output port
When specified for use as input ports
The input pin states are transmitted from the DO pin to the controller
Input state = low : Data = 0
Input state = high : Data = 1
When specified for use as output ports
The output states are determined by OUT4 and OUT5 in the serial data.
Data = 0 : low
Data = 1 : high
These pins are set to function as input ports by the power-on reset.
I/O-4
I/O-5
9
8
General-purpose
I/O ports
The OUT6 bit in the serial data is latched and output from O-6.
O-6
7
Output port
The OUT7 bit in the serial data is latched and output from O-7.
This pin outputs the 8 Hz clock time base signal when TBC is 1.
This pin is set to the open state by the power-on reset.
O-7
6
Output port
PLL charge pump output pins
When the frequency created by dividing the local oscillator signal
frequency by N is higher than the reference frequency, a high level is
output from the PD0 pin, and when lower, a low level is output. When the
frequencies match, PD0 goes to the high-impedance state.
PD1 operates in a similar manner.
PD0
PD1
20
19
Charge pump
output
HCTR is selected when CTS1 in the serial data input is set to 1.
— The input frequency range is 0.4 to 25 MHz
—The signal is passed through an internal divide-by-two circuit and
transmitted to a general-purpose counter. An integrating count can also
be performed.
—The result is output starting with the MSB of the general-purpose
counter from the DO pin.
— There are four counting time periods: 4, 8, 32, or 64 ms.
— See the item on the general-purpose counter for details.
When H/I-6 in the serial data is set to 0
— This pin functions as an input port, and its state is output from the DO
output pin.
HCTR/I-6
14
General-purpose
counter
LCTR is selected when CTS1 in the serial data input is set to 0.
When CTS0 in the serial data input is set to 1 in the CTS1=0 state.
— The circuit operates in frequency measurement mode.
— The input frequency range is 10 to 500 kHz.
— The signal is transmitted directly to the general-purpose counter.
When CTS0 in the serial data input is set to 0
— The circuit operates in period measurement mode.
— The input frequency range is 1 Hz to 20 kHz.
—The measurement period can be set to be either 1 period or 2 periods.
If 2-period measurement is selected, the input frequency range will be
2 Hz to 40 kHz.
—The result is output starting with the MSB of the general-purpose
counter from the DO pin.
— See the item on the general-purpose counter for details.
When L/I-7 in the serial data input is set to 0.
—This pin functions as an input port, and its state is output from the DO
output pin.
LCTR/I-7
13
S
General-purpose
counter
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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 |
| LC72151V | 制造商:SANYO 制造商全稱: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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