SM803020 Datasheet, PDF (8/14 Pages) Micrel Semiconductor – Flexible Ultra-Low Jitter Clock Synthesizer

Micrel, Inc.
SM803020
AC Electrical Characteristics
VDD = VDDO1/2 = 3.3V ±5% or 2.5V ±5%
VDD = 3.3V ±5%, VDDO1/2 = 3.3V ±5% or 2.5V ±5%
TA = −40°C to +85°C
Symbol Parameter
Condition
Min.
Typ.
Max. Units
FIN
Input Frequency
39.0625
MHz
FOUT
Output Frequency
LVPECL, LVDS, HCSL, LVCMOS
156.25
MHz
LVPECL output
85
135
350
ps
TR/TF
Output Rise/Fall Time
20% – 80%
LVDS output
HCSL output
85
140
175
340
300
ps
700
ps
LVCMOS output
100
200
400
ps
ODC
Output Duty Cycle
45
50
55
%
Tpd
TSKEW
Input to Output Propagation Delay
Output-to-Output Skew⁽⁴⁾
ZDB mode
Synthesizer/Bypass mode
Note 5, same output bank
−100
4
100
ps
ns
50
ps
TLOCK
PLL Lock Time
5
20
ms
Tjit(∅)
RMS Phase Jitter⁽⁶⁾
Integration range (12kHz to 20MHz)
180
fs
Notes:
4. Defined as skew between outputs at the same supply voltage and with equal load conditions; measured at the output differential crossing points.
5. Output-to-output skew is only defined for outputs in the same PLL bank [A:B, C:D] with the same output type setting.
6. All phase noise measurements were taken with an Agilent 5052B phase noise system.
July 22, 2013
8
Revision 1.0
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