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参数资料
| 型号： | MC145157-2 |
| 厂商： | Motorola, Inc. |
| 英文描述： | PLL Frequency Synthesizer(PLL频率合成器) |
| 中文描述： | 锁相环频率合成器（PLL频率合成器） |
| 文件页数： | 7/26页 |
| 文件大小： | 423K |
| 代理商： | MC145157-2 |
MC145151–2 through MC145158–2
MOTOROLA
7
portion of the cycle). MC is then set back low, the counters
preset to their respective programmed values, and the above
sequence repeated. This provides for a total programmable
divide value (NT) =
N
P + A where P and P + 1 represent the
dual–modulus prescaler divide values respectively for high
and low MC levels, N the number programmed into the
÷
N
counter, and A the number programmed into the
÷
A counter.
LD
Lock Detector Output (Pin 28)
Essentially a high level when loop is locked (fR, fV of same
phase and frequency). Pulses low when loop is out of lock.
POWER SUPPLY
VDD
Positive Power Supply (Pin 3)
The positive power supply potential. This pin may range
from + 3 to + 9 V with respect to VSS.
VSS
Negative Power Supply (Pin 2)
The most negative supply potential. This pin is usually
ground.
TYPICAL APPLICATIONS
Figure 1. Synthesizer for Land Mobile Radio VHF Bands
NOTES:
1. Off–chip oscillator optional.
2. The
φ
R and
φ
V outputs are fed to an external combiner/loop filter. See the Phase–Locked Loop — Low–Pass Filter
Design page for additional information. The
φ
R and
φ
V outputs swing rail–to–rail. Therefore, the user should be careful
not to exceed the common mode input range of the op amp used in the combiner/loop filter.
LOCK DETECT SIGNAL
10.24 MHz
NOTE 1
R1
MC33171
NOTE 2
+
150 – 175 MHz
5 kHz STEPS
MC12017
÷
64/65 PRESCALER
MC145152–2
MC
LD
A0
A5
N9
OSCin
VDD
VSS
OSCout
RA2
RA1
φ
R
φ
V
fin
–
VCO
RA0
N0
+ V
R1
R2
C
R2
C
“1”
“1”
“1”
NO CONNECTS
CHANNEL PROGRAMMING
相关PDF资料 |
PDF描述 |
|---|---|
| MC145158-2 | PLL Frequency Synthesizer(PLL频率合成器) |
| MC145158DW | Serial-Input PLL Frequency Synthesizer |
| MC145158P2 | Parallel-Input PLL Frequency Synthesizer |
| MC145158FN | Non-inverting Dual High-Speed MOSFET Drivers with Internal Regulator 8-PDIP |
| MC145158P | Serial-Input PLL Frequency Synthesizer |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC145158-2 | 制造商:Motorola Inc 功能描述: |
| MC145158DW2 | 功能描述:IC SER-IN PLL FREQ SYNTH 16-SOIC RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:- 标准包装:39 系列:- 类型:* PLL:带旁路 输入:时钟 输出:时钟 电路数:1 比率 - 输入:输出:1:10 差分 - 输入:输出:是/是 频率 - 最大:170MHz 除法器/乘法器:无/无 电源电压:2.375 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| MC145158DW2R2 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| MC145159FN1R2 | 制造商:Motorola Inc 功能描述: |
| MC145159P1 | 制造商:Motorola Inc 功能描述: |
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