SP5658
2.7GHz 3-Wire Bus Controlled Frequency Synthesiser
Advance Information
Supersedes October 1996 Media IC Handbook HB3923-2
DS4064 - 4.1 March 1998
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.
CHARGE PUMP
CRYSTAL
DISABLE
ENABLE
DATA
CLOCK
PORT P1/OC
1
14
DRIVE
V
EE
SP5658F
RF INPUT
RF INPUT
V
CC
LOCK
PORT P0/OP
MP14
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
CHARGE PUMP
CRYSTAL
1
16
DRIVE
V
EE
ENABLE
DATA
CLOCK
PORT P3
PORT P2
SP5658S
DISABLE
RF INPUT
RF INPUT
V
CC
LOCK
PORT P0/OP
PORT P1/OC
MP16
Fig. 1 Pin connections – top view
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)
MITEL [ MITEL NETWORKS CORPORATION ]
