6.13 Typical Characteristics - 65MSPS

Typical values at TA = 25°C, ADC sampling rate = 65 MSPS, AIN = –1dBFS, differential input, AVDD = IOVDD = 1.8V, internal

1.2V voltage reference, unless otherwise noted.

Input Frequency (MHz)

0

5

10

15

20

25

30 32.5

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

SNR = 49.7dBFS, SFDR = 61dBc, Non-HD23 = 70dBFS

Figure 6-19. Single Tone FFT at FIN = 1MHz

Input Frequency (MHz)

0

5

10

15

20

25

30 32.5

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

SNR = 49.6dBFS, SFDR = 63dBc, Non-HD23 = 72dBFS

Figure 6-20. Single Tone FFT at FIN = 1MHz, Single-ended input

Input Frequency (MHz)

0

5

10

15

20

25

30 32.5

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

SNR = 49.8dBFS, SFDR = 64dBc, Non-HD23 = 70dBFS

Figure 6-21. Single Tone FFT at FIN = 10MHz

Input Frequency (MHz)

0

5

10

15

20

25

30 32.5

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

SNR = 49.9dBFS, SFDR = 64dBc, Non-HD23 = 69dBFS

Figure 6-22. Single Tone FFT at FIN = 40MHz

Input Frequency (MHz)

0

5

10

15

20

25

30 32.5

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

AIN = -7dBFS/tone, IMD3 = -93dBc

Figure 6-23. Two Tone FFT at FIN = 8/10MHz

Input Frequency (MHz)

5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80

49

60

49.2

64

49.4

68

49.6

72

49.8

76

50

80

50.2

84

50.4

88

50.6

92

50.8

96

51

100

SNR

SFDR

Non-HD23

Figure 6-24. AC Performance vs Input Frequency

ADC3908D025, ADC3908D065, ADC3908D125

ADC3908S025, ADC3908S065, ADC3908S125

SBASAU9 – OCTOBER 2024

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