STW81102 datasheet(13/43 Pages) STMICROELECTRONICS

13 / 43 page

STW81102

Electrical specifications

13/43

Upon request an Evaluation Kit is available including a powerful simulation tool

(STWPLLSim) which allows to estimate very accurately the Phase Noise of the device

according to the desired project parameters (VCO Frequency, Selected Output Stage,

Reference Clock, Frequency Step, …); refer to the Application Information (Section 7) for

more details.

VCO A with divider by 2 (1500MHz-1810MHz) – Open Loop(3)

Phase Noise @ 1 KHz

-62

dBc/Hz

Phase Noise @ 10 KHz

-89

dBc/Hz

Phase Noise @ 100 KHz

-113

dBc/Hz

Phase Noise @ 1 MHz

-135

dBc/Hz

Phase Noise @ 10 MHz

-151.5

dBc/Hz

Phase Noise Floor @ 40 MHz

-155

dBc/Hz

VCO B with divider by 2 (2000MHz-2325MHz) – Open Loop(3)

Phase Noise @ 1 KHz

-60

dBc/Hz

Phase Noise @ 10 KHz

-88

dBc/Hz

Phase Noise @ 100 KHz

-112

dBc/Hz

Phase Noise @ 1 MHz

-134

dBc/Hz

Phase Noise @ 10 MHz

-151.5

dBc/Hz

Phase Noise Floor @ 40 MHz

-155

dBc/Hz

VCO A with divider by 4 (750MHz-905MHz) – Open Loop(3)

Phase Noise @ 1 KHz

-68

dBc/Hz

Phase Noise @ 10 KHz

-95

dBc/Hz

Phase Noise @ 100 KHz

-119

dBc/Hz

Phase Noise @ 1 MHz

-141

dBc/Hz

Phase Noise @ 10 MHz

-154

dBc/Hz

Phase Noise Floor @ 40 MHz

-155

dBc/Hz

VCO B with divider by 4 (1000MHz-1162.5MHz) – Open Loop(3)

Phase Noise @ 1 KHz

-66

dBc/Hz

Phase Noise @ 10 KHz

-94

dBc/Hz

Phase Noise @ 100 KHz

-118

dBc/Hz

Phase Noise @ 1 MHz

-140

dBc/Hz

Phase Noise @ 10 MHz

-154

dBc/Hz

Phase Noise Floor @ 40 MHz

-155

dBc/Hz

Phase Noise SSB.

VCO amplitude setting to value [11].

All the closed-loop performances are specified using a Reference Clock signal at 76.8 MHz with phase noise of

-135dBc/Hz @1KHz offset, -145dBc/Hz @10KHz offset and -149.5dBc/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 (continued)

Parameter

Test conditions

Min

Typ

Max

Unit

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