CDCM7005-SP

SGLS390E – JULY 2009 – REVISED AUGUST 2012

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DESCRIPTION

The CDCM7005 is a high-performance, low phase noise and low skew clock synchronizer that synchronizes a

VCXO (voltage controlled crystal oscillator) or VCO (voltage controlled oscillator) frequency to one of the two

reference clocks. The programmable pre-divider M and the feedback-dividers N and P give a high flexibility to the

frequency ratio of the reference clock to VC(X)O:

•

VC(X)O_IN / PRI_REF = (N x P) / M or

•

VC(X)O_IN / SEC_REF = (N x P) / M

VC(X)O_IN clock operates up to 2 GHz. Through the selection of external VC(X)O and loop filter components,

the PLL loop bandwidth and damping factor can be adjust to meet different system requirements.

The CDCM7005 can lock to one of two reference clock inputs (PRI_REF and SEC_REF), supports frequency

hold-over mode and fast-frequency-locking for fail-safe and increased system redundancy. The outputs of the

CDCM7005 are user definable and can be any combination of up to five LVPECL outputs or up to 10 LVCMOS

outputs. The LVCMOS outputs are arranged in pairs (Y0A:Y0B, Y1A:Y1B, …), so that each pair has the same

frequency. But each output can be separately inverted and disabled. The built in synchronization latches ensure

that all outputs are synchronized for low output skew.

All device settings, like outputs signaling, divider value, input selection, and many more, are programmable by

SPI (3-wire serial peripheral interface). SPI allows individually control of the device settings.

TEMPERATURE

ORDERABLE PART NUMBER

TOP-SIDE MARKING

5962-0723001VXC

5962-0723001VXC

CDCM7005HFG-V

52 / HFG

25°C

CDCM7005HFGMPR

EVAL ONLY

(1)

For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

website at www.ti.com.

(2)

Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

(3)

These units are intended for engineering evaluation only. They are processed to a non-compliant flow (e.g. No Burn-In, etc.) and are

tested to a temperature rating of 25°C only. These units are not suitable for qualification, production, radiation testing or flight use. Parts

are not warranted for performance over the full MIL specified temperature range of -55°C to 125°C or operating life.

2

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