AD9271 datasheet(18/61 Pages) AD

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AD9271

Rev. B | Page 17 of

CODES

–5

–4

–3

–2

–1

200000

CODES

–5

–4

–3

–2

–1

400000

600000

800000

1000000

1200000

1400000

1600000

1800000

2000000

Figure 24. Output-Referred Noise Histogram with VGAIN = 0.0 V

200000

400000

600000

800000

1000000

1200000

Figure 25. Output-Referred Noise Histogram with VGAIN = 1.0 V

FREQUENCY (MHz)

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

LNA GAIN = 5×

LNA GAIN = 8×

LNA GAIN = 6×

Figure 26. Short-Circuit, Input-Referred Noise vs. Frequency

VGAIN (V)

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

–140

–139

–138

–137

–136

–135

–134

–133

–132

–131

LNA GAIN = 5×

LNA GAIN = 6×

LNA GAIN = 8×

Figure 27. Short-Circuit, Output-Referred Noise vs. VGAIN

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

VGAIN (V)

59.5

60.0

60.5

61.0

61.5

62.0

62.5

63.0

63.5

64.0

SNR (dBFS)

SINAD (dBFS)

Figure 28. SNR/SINAD vs. VGAIN, AIN = −6.5 dBFS

TEMPERATURE (°C)

–40

–20

1.40

1.45

1.50

1.55

1.60

1.65

1.70

Figure 29. Short-Circuit, Input-Referred Noise vs. Temperature

AD9271 Datasheet(PDF) 18 Page - Analog Devices

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