Datasheet > MC145149P

MC145149P

更新时间： 2024-01-28 15:22:27

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		/
页数	文件大小	规格书
12页	158K
描述
Dual PLL Frequency Synthesizer

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MC145149P 数据手册

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by MC145149/D

SEMICONDUCTOR TECHNICAL DATA

Interfaces with Dual–Modulus Prescalers

P SUFFIX

PLASTIC DIP

CASE 738

The MC145149 contains two PLL Frequency Synthesizers which share a

common serial data port and common reference oscillator. The device

contains two 14–stage R counters, two 10–stage N counters, and two

7–stage A counters. All six counters are fully programmable through a serial

port. The divide ratios are latched into the appropriate counter latch

according to the last data bits (control bits) entered.

When combined with external low–pass filters and voltage controlled

oscillators (VCOs), the MC145149 can provide all the remaining functions

for two PLL frequency synthesizers operating up to the device’s frequency

limit. For higher VCO frequency operation, a down mixer or dual–modulus

prescaler can be used between the VCO and the synthesizer IC.

DW SUFFIX

SOG PACKAGE

CASE 751D

ORDERING INFORMATION

MC145149P

Plastic DIP

MC145149DW SOG Package

•

Low Power Consumption Through Use of CMOS Technology

Wide Operating Voltage Range: 3 to 9 V

Operating Temperature Range: – 40 to + 85°C

÷ R Range = 3 to 16,383

÷ N Range = 3 to 1023

÷ A Range = 0 to 127

Two “Linearized” Three–State Digital Phase Detectors with No Dead Zone

Two Lock Detect Signals (LD1 and LD2)

Two Open–Drain Port Expander Outputs (SW1 and SW2)

Compatible with the Serial Peripheral Interface (SPI) on CMOS MCUs

PIN ASSIGNMENT

LD1

MC1

ENB

SS1

out1

DD1

SW1

in1

DATA

CLK

OSC

out

SW2

in2

S/R

DD2

out

MC2

LD2

out2

SS2

Motorola, Inc. 1995

MOTOROLA

MC145149

12 3 4 5 6 7...12

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