SP5658
2.7GHz 3-Wire Bus Controlled Frequency Synthesiser
Advance Information
DS4064
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.
ISSUE 4.2
Ordering Information
SP5658F/KG/MP1S (Tubes, 14 lead SO)
SP5658S/KG/MP2S (Tubes, 16 lead SO)
SP5658F/KG/MP1T (Tape & Reel, 14 lead SO)
SP5658S/KG/MP2T (Tape & Reel, 16 lead SO)
CHARGE PUMP
1
14
APPLICATIONS
s SAT, TV, VCR and Cable tuning systems
s Communications systems
DRIVE
V EE
SP5658F
CRYSTAL
DISABLE
ENABLE
DATA
RF INPUT
RF INPUT
V CC
CLOCK
LOCK
PORT P1/OC
PORT P0/OP
MP14
CHARGE PUMP
1
16
DRIVE
CRYSTAL
V EE
DISABLE
RF INPUT
ENABLE
DATA
CLOCK
SP5658S
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 synthesiser
s ESD protection (Normal ESD handling procedures
should be observed)
November 2001
RF INPUT
V CC
LOCK
PORT P3
PORT P0/OP
PORT P2
PORT P1/OC
MP16
Fig. 1 Pin connections – top view