STW81101ATR datasheet(12/48 Pages) STMICROELECTRONICS

12 / 48 page

Electrical specifications

STW81101

12/48

2.5

Phase noise specification

Table 6.

Phase noise specification

Parameter

Test conditions

Min

Typ

Max

Unit

Phase noise performance(1)

Inband phase noise floor – closed loop(2)

Normalized inband phase noise

floor

ICP=4mA, PLL BW = 50kHz;

including reference clock

contribution

-222

dBc/Hz

Inband phase noise floor

direct output

ICP=4mA, PLL BW = 50kHz;

including reference clock

contribution

-222+20log(N)+10log(FPFD)dBc/Hz

Inband phase noise floor

divider by 2

-228+20log(N)+10log(F

PFD)dBc/Hz

Inband phase noise floor

divider by 4

-234+20log(N)+10log(FPFD)dBc/Hz

PLL integrated phase noise – direct output

Integrated phase noise

100Hz to 40MHz

FOUT = 4 GHz,

FPFD = 200kHz, FSTEP =200 kHz,

PLL BW = 15kHz, ICP=4mA

-36

dBc

1.3

° rms

PLL integrated phase noise – divider by 2

Integrated phase noise

100Hz to 40MHz

FOUT = 2 GHz,

FPFD = 400kHz, FSTEP =200 kHz,

PLL BW = 25kHz, ICP=3mA

-43

dBc

0.55

° rms

PLL integrated phase noise – divider by 4

Integrated phase noise

100Hz to 40MHz

FOUT = 1 GHz,

FPFD = 800kHz, FSTEP =200 kHz,

PLL BW = 25kHz, ICP=1.5mA

-51

dBc

0.23

° rms

VCO A direct (3300MHz-3900MHz) – open loop(3)

Phase noise @ 1 kHz

-56

dBc/Hz

Phase noise @ 10 kHz

-83

dBc/Hz

Phase noise @ 100 kHz

-106

dBc/Hz

Phase noise @ 1 MHz

-129

dBc/Hz

Phase Noise @ 10 MHz

-149

dBc/Hz

Phase Noise @ 40 MHz

-159

dBc/Hz

VCO B direct (3800MHz-4400MHz) – open loop(3)

Phase noise @ 1 kHz

-55

dBc/Hz

Phase noise @ 10 kHz

-83

dBc/Hz

Phase noise @ 100 kHz

-106

dBc/Hz

Phase noise @ 1 MHz

-128

dBc/Hz

Phase noise @ 10 MHz

-148

dBc/Hz

Phase noise @ 40 MHz

-158

dBc/Hz

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