MK1574-01SILFTR IDT, Integrated Device Technology Inc, MK1574-01SILFTR Datasheet - Page 6
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MK1574-01SILFTR
Manufacturer Part Number
MK1574-01SILFTR
Description
IC PLL FRAME RATE COMM 16-SOIC
Manufacturer
IDT, Integrated Device Technology Inc
Type
Clock/Frequency Synthesizerr
Datasheet
1.MK1574-01SLFTR.pdf
(10 pages)
Specifications of MK1574-01SILFTR
Pll
Yes
Input
Clock
Output
CMOS
Number Of Circuits
1
Ratio - Input:output
1:3
Differential - Input:output
No/No
Divider/multiplier
No/Yes
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Frequency-max
-
IDT™ / ICS™ 3.3 VOLT FRAME RATE COMMUNICATIONS PLL
MK1574
3.3 VOLT FRAME RATE COMMUNICATIONS PLL
The loop damping is set by the resistor R, the capacitor C, and the constant K2 using the formula::
For example, to design the loop filter whewn generating 8.192 MHz from 8 kHz:
1. From the Output Clock Decoding table (page 2), the address is E. The Loop Filter Constants table (page 7)
2. A good value for the loop bandwidth is 1/20 the input frequency; where 8 kHz/20 = 400 Hz. Using equation 1,
Therefore,
3. A good value for the damping factor ζ is 0.707. From equation 2,
R =
C =
R =
400 =
shows the constants K1 = 0.0516 and K2 = 6.2.
(
ζ * K2
0.707 * 6.2
C
0.0516
16E-9
K1
K1
400
C
C
) 2
= 34.7 kΩ (36 kΩ nearest standard value)
= 16.6 nF (16 nF nearest standard value
Equation 2; ζ (zeta) is the damping factor
6
MK1574
CLOCK SYNTHESIZER
REV F 111605