SP8704 IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS
DS 3289 -1
SP8704
950MHz VERY LOW CURRENT MULTI-MODULUS DIVIDER
The SP8704 is a switchable divide by 128/129, 64/65
programmable divider with a maximum specified operating
frequency of 950MHz.
The signal (clock) inputs are biased internally and require
to be capacitor coupled.
The SP8704 will operate from any supply from 3V to 5V
and features full electrostatic discharge protection.
FEATURES
DC to 950MHz Operation
-40°C to +85°C Temperature Range
Operation from 3V to 5V Supply
ESD Protection on all Pins
Fig. 1 Pin connections - top view
DP8,MP8
QUICK REFERENCE DATA
Supply Voltage 3V to 5V
Supply Current 10mA - Including Output Emitter
Follower
ABSOLUTE MAXIMUM RATINGS
Supply voltage
Storage temperature range
Junction temperature
Input voltage
7V
-55°C to +125°C
+175°C
2.5V p-p
÷ 128/9
÷ 64/5
Fig. 2 Functional diagram SP8704
SP8704
ELECTRICAL CHARACTERISTICS
Test conditions (unless otherwise stated):
T
amb
= -40˚C to 85°C, VCC = +2.75V to +5.5V
Value
Characteristic
Min.
Supply current
Input sensitivity
10MHz
80MHz
150MHz
850MHz
950MHz
Input impedance
Output
Ratio select (pin 3)
Modulus control (pin 6)
Clock to output delay
Set up time
Release time
LO
HI
LO
HI
2
8
16
16
V
CC
1
50
2
1
1
Typ.
10
150
25
15
15
50
Ω
pF
V pk-pk
V
V
V
V
ns
ns
ns
Emitter follower output
current source = 0.75mA
128/129 selected
64/65 selected
65 or 129 selected
64 or 128 selected
Max.
mA
mV rms
Including output emitter follower
Sinewave input into 50Ω
Units
Conditions
TRUTH TABLE
Division
Pin 3
L
L
H
H
Pin 6
L
H
L
H
ratio
129
128
65
64
Fig. 3 Typical input sensitivity at 85°C
SP8704
HEADQUARTERS OPERATIONS
GEC PLESSEY SEMICONDUCTORS
Cheney Manor, Swindon,
Wiltshire SN2 2QW, United Kingdom.
Tel: (0793) 518000
Fax: (0793) 518411
GEC PLESSEY SEMICONDUCTORS
P.O. Box 660017
1500 Green Hills Road,
Scotts Valley, California 95067-0017,
United States of America.
Tel: (408) 438 2900
Fax: (408) 438 5576
CUSTOMER SERVICE CENTRES
• FRANCE & BENELUX
Les Ulis Cedex Tel: (1) 64 46 23 45 Tx: 602858F
Fax : (1) 64 46 06 07
• GERMANY
Munich Tel: (089) 3609 06-0 Tx: 523980 Fax : (089) 3609 06-55
• ITALY
Milan Tel: (02) 66040867 Fax: (02) 66040993
• JAPAN
Tokyo Tel: (03) 3296-0281 Fax: (03) 3296-0228
• NORTH AMERICA Integrated Circuits and Microwave Products
Scotts Valley, USA
Tel (408) 438 2900 Fax: (408) 438 7023.
Hybrid Products,
Farmingdale, USA Tel (516) 293 8686
Fax: (516) 293 0061.
• SOUTH EAST ASIA
Singapore Tel: (65) 3827708 Fax: (65) 3828872
•
SWEDEN
Stockholm, Tel: 46 8 702 97 70 Fax: 46 8 640 47 36
• UNITED KINGDOM & SCANDINAVIA
Swindon Tel: (0793) 518510 Tx: 444410 Fax : (0793) 518582
These are supported by Agents and Distributors in major countries world-wide.
© GEC Plessey Semiconductors 1992 Publication No. DS3289 Issue No. 1.0 May 1992
This publication is issued to provide information only which (unless agreed by the Company in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded
as a representation relating to the products or services concerned. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. The Company
reserves the right to alter without prior knowledge the specification, design or price of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute
any guarantee that such methods of use will be satisfactory in a specific piece of equipment. It is the user's responsibility to fully determine the performance and suitability of any equipment using such information
and to ensure that any publication or data used is up to date and has not been superseded. These products are not suitable for use in any medical products whose failure to perform may result in significant injury
or death to the user. All products and materials are sold and services provided subject to the Company's conditions of sale, which are available on request.