sp5668 ETC-unknow, sp5668 Datasheet - Page 8

• Manufacturer Part Number: sp5668
• Description: 2.7ghz 3-wire Controlled Synthesiser
• Manufacturer: ETC-unknow

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