Datasheet > SP5669_97

SP5669_97

更新时间： 2024-11-01 04:03:23

品牌	Logo	应用领域
MITEL		/
页数	文件大小	规格书
12页	198K
描述
2.7GHz I2C Bus Controlled Synthesiser

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SP5669_97 数据手册

SP5669

2.7GHz I²C Bus Controlled Synthesiser

Preliminary Information

DS4852 - 1.4 November 1997

The SP5669 is a single chip frequency synthesiser

designed for tuning systems up to 2.7GHz and offers step size

compatible with DTT offset requirements.

The RF preamplifier drives a divide by two prescaler which

can be disabled for applications up to 2GHz, allowing direct

interfacing with the programmable divider so enabling a step

sizeequaltothecomparisonfrequency. Forapplicationsupto

2.7GHzthedividebytwoisenabled, givingastepsizeoftwice

the comparison frequency.

CHARGE PUMP

CRYSTAL

REF/COMP

ADDRESS

SDA

DRIVE

Vee

RF INPUT

Vcc

SCL

ADC

The comparison frequency is obtained either from an on–

chip crystal controlled oscillator, or from an external source.

The oscillator frequency F_refor the comparison frequency

PORT P3

PORT P2

PORT P0

PORT P1

_compmay be switched to the REF/COMP output. This feature

is ideally suited to providing the reference frequency for a

second synthesiser such as in a double conversion tuner (see

Fig. 8).

MP16

The synthesiser is controlled via an I²C bus, and responds

to one of four programmable addresses which are selected by

applying a specific voltage to the ‘address’ input. This feature

enables two or more synthesisers to be used in a system.

The device contains four switching ports P0–P3 and a

5–level ADC. The output of the ADC can be read via the I²C

bus.

Fig.1 Pin connections - top view

Thedevicealsocontainsavaractorlinedisableandcharge

pump disable facility.

APPLICATIONS

■

Complete 2.7GHz single chip system

Optimised for low phase noise

FEATURES

■ Complete 2.7GHz single chip system

■ Compatible with UK DTT offset requirements

■ Optimised for low phase noise

ORDERING INFORMATION

SP5669/KG/MP1S (Tubes)

■ Selectable divide by two prescaler

■ Selectable reference division ratio

■ Selectable reference/comparison frequency output

■ Selectable charge pump current

■ Four selectable I²C bus address

■ 5–level ADC

SP5669/KG/MP1T (Tape and reel)

■ Pin compatible with the SP5658 3–wire bus

controlled synthesiser and SP5659 I²C bus

synthesiser and SP5659 I²C bus synthesiser

■ ESD protection; (Normal ESD handling

procedures should be observed)

APPLICATIONS

■ SAT, TV, VCR and Cable tuning systems

12 3 4 5 6 7...12

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与SP5669_97相关器件

型号	品牌	获取价格	描述	数据表
SP5669KG	MITEL	获取价格	2.7GHz I2C Bus Controlled Synthesiser
SP5669KGMP1S	MITEL	获取价格	2.7GHz I2C Bus Controlled Synthesiser
SP5669KGMP1T	MITEL	获取价格	2.7GHz I2C Bus Controlled Synthesiser
SP5670	APITECH	获取价格	Wide Band Low Power Amplifier, 20MHz Min, 250MHz Max, FP-4
SP572	ETC	获取价格	语音压扩电路
SP5730	MITEL	获取价格	1.3GHz Low Phase Noise Frequency Synthesiser
SP5730	ZARLINK	获取价格	1.3 GHz Low Phase Noise Frequency Synthesiser
SP5730A	MITEL	获取价格	1.3GHz Low Phase Noise Frequency Synthesiser
SP5730A/KG/MP1S	ZARLINK	获取价格	1.3 GHz Low Phase Noise Frequency Synthesiser
SP5730A/KG/MP1T	ZARLINK	获取价格	1.3 GHz Low Phase Noise Frequency Synthesiser

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