
Si552
6
Rev. 0.5
2. Pin Descriptions
Table 10. Si552 Pin Descriptions
Pin
Name
Type
Function
1
VC
Analog Input
Control Voltage
2
FS*
Input
Frequency Select:
0 = first frequency selected
1 = second frequency selected
3
GND
Ground
Electrical and Case Ground
4
CLK+
Output
Oscillator Output
5
CLK–
(N/A for CMOS)
Output
Complementary Output
(N/C for CMOS)
6
VDD
Power
Power Supply Voltage
*Note: FS includes a 17 k
1
2
3
6
5
4
VC
GND
FS
VDD
CLK+
CLK–
(Top View)