MC44827 - LOW-POWER PLL TUNING CIRCUIT

Motorola

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Datasheet Details

Part number	MC44827
Manufacturer	Motorola
File Size	157.46 KB
Description	LOW-POWER PLL TUNING CIRCUIT
Datasheet	MC44827_Motorola.pdf

MC44827 Product details

Description

Pin 1 2 3 4 5 6 7 8 9 10,11,12,13 14 15 16 Symbol DA CL XTAL Amp In VTUN VCC2 VCC1 HF In Gnd B0 to B3 VCC3 Lock EN 3 wire bus data input 3 wire bus clock input Crystal oscillator (3.2 MHz or 4 MHz) Negative operational amplifier input and phase comparator output Operational amplifier output which provides the tuning voltage Operational amplifier positive supply (33 V) Positive supply of the circuit (5 V) Asymmetrical HF input Ground PNP Band buffer outputs Positive supply for int

Features

as MC44817/17B but has improved sensitivity performance and reduced power dissipation. The low frequency preamplifier has been removed and the operational amplifier pull.
up resistor has been increased to 60 kΩ. The MC44827/27B are controlled via a 3.
wire bus. The MC44827/27B have the same functions as the MC44828 which is I2C bus controlled. The MC44827/27B and the MC44828 can be exchanged to allow conversion between 3.
wire bus and I2C bus control. The MC44827/27B are man.

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Published: May 22, 2005 |