SP5668 Datasheet, PDF (8/12 Pages) Mitel Networks Corporation – 2.7GHz 3-Wire Bus Controlled Synthesiser

SP5668
APPLICATION NOTES
A generic set of application notes AN168 for designing with
synthesisers such as the SP5668 has been written. This
covers aspects such as loop filter design and decoupling. This
application note is also featured in the Media IC Handbook.
A generic test/demo board has been produced which can
be used for the SP5668. A circuit diagram is shown in Fig. 8.
The board can be used for the following purposes:
(A) Measuring RF sensitivity performance.
(B) Indicating port function
(C) Synthesising a voltage controlled oscillator
(D) Testing of external reference sources
P2
+5V
+30V
+12V
ENABLE
DATA / SDA
CLOCK / SCL
EXTERNAL REFERENCE
C10
100nF
C9
100nF
47µF
C7
10nF
*(NOT FITTED)
C6 18pF
SKT2
C2
15nF
C8
39pF
P1
X1 4MHz
C12
100pF
C13
100pF
C3
68pF 47µF
R6 13K3
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
R2
22K
R9
16K
T1
BCW31
C11 100nF
R10
47K
C14
2n2F
VAR
GND
C5
1nF
SW2
RF INPUT
C3 SKT1
1nF
C4
10nF
REFERENCE
OUTPUT
SKT
LOCK
P0
P1
P2
SW1
D1 D2
PIN NO : 7
D4 D5
8 LOCK
Fig. 8 Evaluation board
8