The SP5658 is a single chip frequency synthesiser

designed for tuning systems up to 2.7GHz.

The RF preamplifer contains a divide by two prescaler

which can be disabled for applications up to 2GHz so enabling

a step size equal to the comparison frequency up to 2GHz and

twice the comparison frequency up to 2.7GHz.

Comparison frequencies are obtained either from a crystal

controlled on–chip oscillator or from an external source.

The device contains two switching ports, in the 14 pin

version and four in the 16 pin, together with an ‘‘in–lock” flag

output. The device also contains a varactor line disable and

charge pump disable facility.

FEATURES

s Complete 2.7GHz single chip system

s Optimised for low phase noise

s Selectable divide by two prescaler

s Selectable reference division ratio

s Charge pump disable

s Varactor line disable

s ‘In–lock’ flag

s Two switching ports in 14 pin version

s Four switching ports in 16 pin version

s Pin compatible with SP5659 I 2 C bus low

phase noise synthesiserPP

s ESD protection (Normal ESD handling procedures

should be observed)

APPLICATIONS

s SAT, TV, VCR and Cable tuning systems

s Communications systems

Fig. 1 Pin connections – top view

114

116

116

CRYSTAL

CHARGE PUMP

DISABLE

ENABLE

DATA

CLOCK

PORT P1/OC

DRIVE

RF INPUT

RF INPUT

LOCK

PORT P0/OP

MP14

MP16

CRYSTAL

CHARGE PUMP

DISABLE

ENABLE

DATA

CLOCK

PORT P3

PORT P2

DRIVE

RF INPUT

RF INPUT

LOCK

PORT P0/OP

PORT P1/OC

ORDERING INFORMATION

SP5658F/KG/MP1S (Tubes, 14 lead SO)

SP5658S/KG/MP2S (Tubes, 16 lead SO)

SP5658F/KG/MP1T (Tape and Mounted)

SP5658S/KG/MP2T (Tape and Mounted)

SP5658

2.7GHz 3-Wire Bus Controlled Frequency Synthesiser

Advance Information

Supersedes October 1996 Media IC Handbook HB3923-2

DS4064 - 4.1 March 1998