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CDCM61002RHBR
1:2 Ultra Low Jitter Crystal-In Clock Generator
CDCM61002
www.ti.com SCAS870F –FEBRUARY 2009–REVISED JUNE 2011
Two Output, Integrated VCO, Low-Jitter Clock Generator
Checkfor Samples: CDCM61002 Divider Programming Using Control Pins:
1FEATURES Two Pins for Prescaler/Feedback Divider One Crystal/LVCMOS Reference Input Three Pins for Output DividerIncluding 24.8832 MHz, 25 MHz, and
26.5625 MHz –
Two Pins for Output Select Input Frequency Range: 21.875 MHzto •
Chip Enable Control Pin Available28.47 MHz •
3.3-V Core and I/O Power Supply•
On-Chip VCO Operatesin Frequency Rangeof •
Industrial Temperature Range: –40°C
to +85°C1.75 GHzto 2.05 GHz •
5-mm×
5-mm, 32-pin, QFN (RHB) Package•
2x Output Available: •
ESD Protection Exceeds2 kV (HBM)–
Pin-Selectable Between LVPECL, LVDS,or
2-LVCMOS; Operatesat 3.3V APPLICATIONS•
LVCMOS Bypass Output Available •
Low Jitter Clock Driver for High-End Datacom•
Output Frequency Selectable by/1,/2,/3,/4, /6, Applications Including SONET, Ethernet, Fibre/8 froma Single Output Divider Channel, Serial ATA, and HDTV•
Supports Common LVPECL/LVDS Output •
Cost-Effective High-Frequency CrystalFrequencies: Oscillator Replacement–
62.5 MHz, 74.25 MHz,75 MHz, 77.76 MHz,
100 MHz, 106.25 MHz, 125 MHz, 150 MHz,
155.52 MHz, 156.25 MHz, 159.375 MHz, DESCRIPTION187.5 MHz, 200 MHz, 212.5 MHz, 250 MHz,The CDCM61002 isa highly versatile, low-jitter
311.04 MHz, 312.5 MHz, 622.08 MHz,frequency synthesizer that can generate two low-jitter
625 MHzclock outputs, selectable between low-voltage•
Supports Common LVCMOS Output positive emitter coupled logic (LVPECL), low-voltage
Frequencies: differential signaling (LVDS), or low-voltage–
62.5 MHz, 74.25 MHz,75 MHz, 77.76 MHz, complementary metal oxide semiconductor
100 MHz, 106.25 MHz, 125 MHz, 150 MHz, (LVCMOS) outputs, froma low-frequency crystalor
155.52 MHz, 156.25 MHz, 159.375 MHz, LVCMOS input fora variety of wireline and data
187.5 MHz, 200 MHz, 212.5 MHz, 250 MHz communication applications. The CDCM61002•
Output Frequency Range: 43.75 MHzto features an onboard PLL that can be easily
683.264 MHz (See Table3) configured solely through control pins. The overall
400 kHz output random jitter performanceis less than 1ps,
RMS (from 10 kHzto20 MHz), making this devicea
perfect choice for usein demanding applications such
dBc/Hzat as SONET, Ethernet, Fibre Channel, and SAN. The
625-MHz LVPECL Outputina small, 32-pin, 5-mm×
at 50%(± 5%) Low Output Skew Outputs
