SP5054KGDPAS datasheet(1/9 Pages) MITEL

No. de pieza	SP5054KGDPAS

Descripción Electrónicos	2.6GHz 3-Wire BUS Controlled Synthesiser

PDF	9 Pages

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Fabricante Electrónico	MITEL [Mitel Networks Corporation]

Página de inicio	http://www.mitel.com

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The SP5054 is a single-chip frequency synthesiser designed

for satellite TV tuning systems. It is a programming variant of

the SP5055, allowing the design of one tuner with either I2C bus

or 3-wire bus format, depending on which device is inserted.

The SP5054, when used with a satellite varactor tuner, forms

a complete phase locked loop tuning system.

The circuit consists of a divide-by-16 prescaler with its own

preamplifier and a 14/15-bit programmable divider controlled

by a serially-loaded data register. Four independently

programmable open-collector outputs are included. The device

has four modes of operation, selected by the Mode Select

input; these modes are summarised in Table1.

The comparison frequencies are obtained by the division of

the output of a 4MHz crystal controlled on-chip oscillator. The

phase comparator has a charge pump output with an output

amplifier stage around which feedback may be applied. Only

one external transistor is required for varactor line driving.

FEATURES

s Complete 2·6GHz Single Chip System

s 62·5kHz, 100kHz and 125kHz Step Size

s Low Power Consumption (325mW Typ.)

s Programming Compatible with Toshiba TD6380,

TD6381 and TD6382

*

s Pin Compatible with SP5055 *

s Low Radiation

s Varactor Drive Amplifier Disable

s Charge Pump Disable

s Single Port 18/19 Bit Serial Data Entry

s Four Controllable Outputs

s ESD Protection †

* See notes on pin compatibility

† Normal ESD handling precautions should be observed

APPLICATIONS

s Satellite TV

s High IF Cable Tuning Systems

ORDERING INFORMATION

SP5054 KG DPAS (18-lead plastic package)

SP5054S KG MPAS (16-lead miniature plastic package)

Fig. 1 Pin connections – top view

SP5054

2.6GHz 3-Wire BUS Controlled Synthesiser

DS3048 - 3.4 May 1996

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SP5054KGDPAS Datasheet(PDF) 1 Page - Mitel Networks Corporation

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