MK1574-01SILFTR IDT, Integrated Device Technology Inc, MK1574-01SILFTR Datasheet - Page 6

• Manufacturer Part Number: MK1574-01SILFTR
• Description: IC PLL FRAME RATE COMM 16-SOIC
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock/Frequency Synthesizerr

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
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MK1574
CLOCK SYNTHESIZER
REV F 111605