SP5659 Datasheet, PDF (1/12 Pages) Mitel Networks Corporation – 2·7GHz I2C Bus Low Phase Noise Synthesiser

Supersedes March 1996 version, DS4206-1.8
SP5659
2·7GHz I²C Bus Low Phase Noise Synthesiser
Preliminary Information
DS4296 - 2.0 June 1998
The SP5659 is a single chip frequency synthesiser designed
for tuning systems up to 2·7GHz.
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, resulting in a step
size equal to the comparison frequency. For applications up
to 2·7GHz the divide-by two is enabled to give a step size of
twice the comparison frequency.
The comparison frequency is obtained either from an on-
chip crystal controlled oscillator or from an external source.
The oscillator frequency F_REF or the comparison frequency
F_COMP may 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. 5).
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 SP5659 contains four switching ports, P0-P3 and a
5-level ADC, the output of which can be read via the I²C bus.
The SP5659 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 42 prescaler
s Selectable Reference Division Ratio
s Selectable Reference/Comparison Frequency Output
s Selectable Charge Pump Current
s Varactor Drive Amplifier Disable
s 5-Level ADC
s Variable I²C BUS Address for Multi-tuner Applications
CHARGE PUMP
CRYSTAL
REF/COMP
ADDRESS
SDA
SCL
PORT P3
PORT P2
1
16
2
15
3
14
4
13
SP5659
5
12
6
11
7
10
8
9
DRIVE
VEE
RF INPUT
RF INPUT
VCC
ADC
PORT P0
PORT P1
Fig. 1 Pin connections – top view
MP16
s ESD Protection: 4kV, Mil-Std-883C, Method 3015 ⁽¹⁾
s Pin Compatible with SP5658
(1) Normal ESD handling precautions should be observed.
APPLICATIONS
s Satellite TV
s High IF Cable Tuning Systems
THERMAL DATA
u_JC = 41°C/W
u_JA = 111°C/W
ORDERING INFORMATION
SP5659 KG/MP1S (Tubes)
SP5659 KG/MP1T (Tape and reel)