STW81103 datasheet(14/53 Pages) STMICROELECTRONICS

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Electrical specifications

STW81103

14/53

An evaluation kit is available upon request, including a powerful simulation tool

(STWPLLSim) that allows a very accurate estimation of the device’s phase noise according

to the desired project parameters (VCO frequency, selected output stage, reference clock,

frequency step, and so on); refer to

Section 8: Application information for more details.

VCO A with divider by 2 (1250 MHz-1525 MHz) – open loop(3)

Phase noise @ 1 kHz

-65

dBc/Hz

Phase noise @ 10 kHz

-93

dBc/Hz

Phase noise @ 100 kHz

-115

dBc/Hz

Phase noise @ 1 MHz

-137

dBc/Hz

Phase noise @ 10 MHz

-153

dBc/Hz

Phase noise floor @ 40 MHz

-155

dBc/Hz

VCO B with divider by 2 (2175 MHz-2500 MHz) – open loop(3)

Phase noise @ 1 kHz

-60

dBc/Hz

Phase noise @ 10 kHz

-88

dBc/Hz

Phase noise @ 100 kHz

-111

dBc/Hz

Phase noise @ 1 MHz

-132

dBc/Hz

Phase noise @ 10 MHz

-150

dBc/Hz

Phase noise floor @ 40 MHz

-154

dBc/Hz

VCO A with divider by 4 (625 MHz-762.5 MHz) – open loop(3)

Phase noise @ 1 kHz

-71

dBc/Hz

Phase noise @ 10 kHz

-99

dBc/Hz

Phase noise @ 100 kHz

-121

dBc/Hz

Phase noise @ 1 MHz

-142

dBc/Hz

Phase noise @ 10 MHz

-154

dBc/Hz

Phase noise floor @ 40 MHz

-155

dBc/Hz

VCO B with divider by 4 (1087.5 MHz-1250 MHz) – open loop(3)

Phase noise @ 1 kHz

-66

dBc/Hz

Phase noise @ 10 kHz

-94

dBc/Hz

Phase noise @ 100 kHz

-117

dBc/Hz

Phase noise @ 1 MHz

-138

dBc/Hz

Phase noise @ 10 MHz

-153

dBc/Hz

Phase noise floor @ 40 MHz

-154

dBc/Hz

Phase Noise SSB. VCO amplitude setting to value [11]. All closed-loop performances are specified using a reference clock

signal at 76.8 MHz with a phase noise of -135 dBc/Hz @1 kHz offset, -145dBc/Hz @10kHz offset and -149.5 dBc/Hz of

noise floor.

Normalized PN = Measured PN – 20log(N) – 10log(FPFD), where N is the VCO divider ratio (N=B*P+A) and FPFD is the

comparison frequency at the PFD input.

Typical phase noise at centre band frequency.

Table 6.

Phase noise specification (1) (continued)

Parameter

Test conditions

Min.

Typ.

Max.

Unit

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