9170B-01CS08LF Datasheet, PDF (4/12 Pages) Integrated Device Technology – CLOCK SYNCHRONIZER AND MULTIPLIER

IDT9170B
CLOCK SYNCHRONIZER AND MULTIPLIER
CLOCK SYNTHESIZER
Using CLK2 Feedback
Connecting CLK2 to FBIN as shown in Figure 2 will cause
all of the rising edges to be aligned (Figure 4).
Figure 2
Using CLK1 Feedback
With CLK1 connected to FBIN as shown in Figure 3, the
input and CLK1 output will be aligned on the rising edge, but
CLK2 can be either rising or falling (Figure 5). Consult IDT if
the CLK1 frequency is desired to be higher than 107 MHz.
Figure 3
For CLK2 frequencies 10 - 53.5 MHz* (-01)
For CLK2 frequencies 2.5 - 13.37 MHz (-02)
*Maximum 33.3 MHz@3.3 V (-01), 8.33 MHz@3.3 V (-02)
Table 2
Functionality Table for IDT9170B-01, -02 with CLK2 Feedback
FS1 FS0
00
01
10
11
CLK1
INx4
INx8
INx2
INx16
CLK2
INx2
INx4
IN
INx8
Figure 4
Input and Output Clock Waveforms with CLK2 Connected to
FBIN
For CLK1 frequencies 20 - 107 MHz† (-01)
For CLK1 frequencies 5 - 26.75 MHz (-02)
†Maximum 66.7 MHz@3.3 V (-01), 16.7 MHz@3.3 V (-02)
Table 3
Functionality Table for IDT9170B-01, -02 with CLK2 Feedback
FS1 FS0
00
01
10
11
CLK1
INx2
INx4
IN
INx8
CLK2
IN
INx2
IN/2
INx4
Figure 5
Input and Output Clock Waveforms with CLK1 Connected to
FBIN
IDT™ CLOCK SYNCHRONIZER AND MULTIPLIER
4
IDT9170B
REV B 052609