STW81200 datasheet(4/58 Pages) STMICROELECTRONICS

4 / 58 page

List of figures

STW81200

4/58

DocID025943 Rev 7

List of figures

Figure 1.

Functional block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 2.

Top view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 3.

VCO open-loop phase noise (5 V supply) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 4.

Closed-loop phase noise at 4.8 GHz, divided by 1 to 64 (5 V supply) . . . . . . . . . . . . . . . . 19

Figure 5.

VCO open-loop phase noise at 4.4 GHz vs. supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 6.

VCO open-loop phase noise over frequency vs. supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 7.

Single sideband integrated phase noise vs. frequency and supply (FPFD= 50 MHz) . . . . . 20

Figure 8.

Figure of merit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 9.

Phase noise and fractional spurs at 2646.96 MHz vs. supply (FPFD = 61.44 MHz) . . . . . 20

Figure 10.

Phase noise and fractional spurs at 2118.24 MHz vs. supply (FPFD = 61.44 MHz) . . . . . 20

Figure 11.

Phase noise and fractional spurs at 2118.24 MHz at 5.0 V supply (FPFD = 61.44 MHz) . 20

Figure 12.

Phase noise and fractional spurs at 2118.24 MHz at 3.6 V supply (FPFD = 61.44 MHz) . 20

Figure 13.

Phase noise and fractional spurs at 2118.24 MHz at 3.0 V supply (FPFD = 61.44 MHz) . 21

Figure 14.

Phase noise at 5.625 GHz and 4.6 GHz (FPFD = 50 MHz) . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 15.

Typical VCO control voltage after VCO calibration (3.6 V supply) . . . . . . . . . . . . . . . . . . . 21

Figure 16.

Average KVCO over VCO frequency and supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Figure 17.

Output power level vs. temperature - single ended (RF_OUT_PWR=7) . . . . . . . . . . . . . . 21

Figure 18.

Output power level – single ended (3 dB more for differential). . . . . . . . . . . . . . . . . . . . . . 21

Figure 19.

Typical spur level at PFD offset over carrier frequency (5.0 V supply) . . . . . . . . . . . . . . . . 22

Figure 20.

Typical spur level vs. offset from 4.5 GHz (5.0 V supply, FPFD=50MHz) . . . . . . . . . . . . . . 22

Figure 21.

10 kHz fractional spur (integer boundary) vs. temperature

(5.0 V supply, FPFD = 50 MHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 22.

800 kHz fractional spur (integer boundary) vs. temperature

(5.0 V supply, FPFD = 50 MHz) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 23.

Frequency settling with VCO calibration – wideband view . . . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 24.

Frequency settling with VCO calibration – narrowband view . . . . . . . . . . . . . . . . . . . . . . . 22

Figure 25.

Overall current consumption vs. temperature (5.0 V supply, FPFD = 50 MHz) . . . . . . . . . . 23

Figure 26.

Current consumption – standard vs. low power (5.0 V supply, FPFD = 50 MHz) . . . . . . . . 23

Figure 27.

Current consumption – standard vs. low power (3.6 V supply, FPFD = 50 MHz) . . . . . . . . 23

Figure 28.

Current consumption – standard vs. low power (3.0 V supply, FPFD = 50 MHz) . . . . . . . . 23

Figure 29.

Reference clock buffer configurations: single-ended (A), differential (B), crystal mode (C) 24

Figure 30.

PFD diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 31.

SPI Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Figure 32.

SPI timing diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Figure 33.

Application diagram (internal VCO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Figure 34.

Application diagram (external VCO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Figure 35.

VFQFPN36 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

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