Micrel, Inc.
DSC2022FI1-F0006
Operational Description
The DSC2022FI1-F0006 is a dual output LVPECL
oscillator consisting of a MEMS resonator and a
supporting PLL IC. The two LVPECL outputs are
generated through independent 8-bit programmable
When OE (pin 1) is floated or connected to VDD,
the DSC2022 is in operational mode. Driving OE
to ground will tri-state both output drivers (hi-
impedance mode).
dividers from the output of the internal PLL. The
two constraints are imposed on the output frequencies:
1) f2 = M x f1/N, where M and N are even integers
between 4 and 254, 2) 1.2GHz < N x f2 < 1.7GHz.
The actual frequencies output by DSC2022FI1-F0006
are controlled by an internal pre-programmed memory
(OTP). This memory stores all coefficients required
by the PLL for up to eight different frequency
combinations. Three control pins (FS0 - FS2) select
the output frequency combination.
Output Clock Frequencies
Frequency select bits are weakly tied high so if left unconnected the default setting will be [111] and the device will output the
associated frequency highlighted in bold.
Freq Select Bits [FS2, FS1, FS0] - Default is [111]
Freq (MHz)
000
001
010
NA
NA
011
NA
NA
100
NA
NA
101
NA
NA
110
NA
NA
111
8
CLK1
CLK2
8
8
8
8
8
Table 1. Pin-Selectable Output Frequencies
Absolute Maximum Ratings
Item
Min.
-0.3
-0.3
-
Max.
+4.0
Units
V
Condition
Supply Voltage
Input Voltage
Junction Temp
Storage Temp
Soldering Temp
VDD + 0.3
+150
V
°C
°C
°C
-55
-
+150
+260
40sec max.
ESD
HBM
MM
4000
400
-
V
CDM
1500
1000+ years of data retention on internal memory
October 10, 2014
2451
3
Revision 1.0
tcghelp@micrel.comor (408) 955-1690
MICREL [ MICREL SEMICONDUCTOR ]
