AD9559PCBZ datasheet(25/120 Pages) AD

25 / 120 page

Data Sheet

AD9559

Rev. 0 | Page 25 of 120

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100

10k

100k

FREQUENCY OFFSET (Hz)

LOOP BW = 100Hz;

HIGH PHASE MARGIN;

PEAKING: 0.06dB; –3dB: 69Hz

LOOP BW = 2kHz;

HIGH PHASE MARGIN;

PEAKING: 0.097dB; –3dB: 1.23kHz

LOOP BW = 5kHz;

HIGH PHASE MARGIN;

PEAKING: 0.14dB; –3dB: 4.27kHz

Figure 27. Closed-Loop Transfer Function for 100 Hz, 2 kHz, and 5 kHz Loop

Bandwidth Settings; High Phase Margin Loop Filter Setting

(This figure is compliant with Telcordia GR-253

jitter transfer test for loop bandwidths < 2 kHz.)

Note that bandwidth is defined as the point where the open loop gain = 0 dB.

–30

–27

–24

–21

–18

–15

–12

–9

–6

–3

100

FREQUENCY OFFSET (Hz)

10k

100k

LOOP BW = 100Hz;

NORMAL PHASE MARGIN;

PEAKING: 0.09dB; –3dB: 117Hz

LOOP BW = 2kHz;

NORMAL PHASE MARGIN;

PEAKING: 1.6dB; –3dB: 2.69kHz

Figure 28. Closed-Loop Transfer Function for 100 Hz and 2 kHz Loop

Bandwidth Settings; Normal Phase Margin Loop Filter Setting

Note that bandwidth is defined as the point where the open loop gain = 0 dB.

AD9559PCBZ Datasheet(PDF) 25 Page - Analog Devices

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