843003AGLF Datasheet, PDF (3/21 Pages) Integrated Device Technology – FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER

ICS843003
FEMTOCLOCKS™ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
Table 2. Pin Characteristics
Symbol
Parameter
C_IN
Input Capacitance
R_PULLUP
Input Pullup Resistor
R_PULLDOWN Input Pulldown Resistor
Test Conditions
Minimum
Typical
4
51
51
Maximum
Units
pF
kΩ
kΩ
Function Tables
Table 3A. Bank A Frequency Table
Inputs
Crystal Frequency
(MHz)
DIV_SELA1 DIV_SELA0
31.25
0
0
31.25
0
1
31.25
1
0
31.25
1
1
26.041666
0
0
26.041666
0
1
26.041666
1
0
26.041666
1
1
Feedback
Bank A
FB_DIV Divider Output Divider
0
20
1
0
20
2
0
20
4
0
20
5
1
24
1
1
24
2
1
24
4
1
24
5
M/N
QA0/nQA0
Multiplication Output Frequency
Factor
(MHz)
20
625
10
312.5
5
156.25
4
125
24
625
12
312.5
6
156.25
4.8
125
Table 3B. Bank B Frequency Table
Inputs
Crystal Frequency
(MHz)
DIV_SELB1 DIV_SELB0
31.25
0
0
31.25
0
1
31.25
1
0
31.25
1
1
26.041666
0
0
26.041666
0
1
26.041666
1
0
26.041666
1
1
Feedback
Bank B
FB_DIV Divider Output Divider
0
20
1
0
20
2
0
20
4
0
20
5
1
24
1
1
24
2
1
24
4
1
24
5
M/N
QBx/nQBx
Multiplication Output Frequency
Factor
(MHz)
20
625
10
312.5
5
156.25
4
125
24
625
12
312.5
6
156.25
4.8
125
IDT™ / ICS™ LVPECL FREQUENCY SYNTHESIZER
3
ICS843003AG REV. A OCTOBER 23, 2008