6.12 Typical Characteristics: 25MSPS (continued)

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

1.2V voltage reference, unless otherwise noted.

Sample Rate (MSPS)

5

10

15

20

25

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

FIN = 1MHz

Figure 6-9. AC Performance vs Sampling Rate

Input Frequency (MHz)

0

5

10

15

20

25

30

35

40

45

50

70

75

80

85

90

95

100

105

110

AIN = -1dBFS on aggressor channel

Figure 6-10. Crosstalk vs Input Frequency

AVDD (V)

1.7

1.75

1.8

1.85

1.9

48

55

48.5

60

49

65

49.5

70

50

75

50.5

80

SNR

SFDR

Non HD23

FIN = 1MHz

Figure 6-11. AC Performance vs AVDD

VCM Offset (mV)

-50

-25

0

25

50

49

50

49.5

55

50

60

50.5

65

51

70

SNR, -40°C

SNR, 25°C

SNR, 105°C

SFDR, -40°C

SFDR, 25°C

SFDR, 105°C

FIN = 1MHz

Figure 6-12. AC Performance vs VCM vs Temperature

Code

0

64

128

192

256

-0.4

-0.2

0

0.2

0.4

FIN = 5MHz

Figure 6-13. INL vs ADC Code

Code

0

64

128

192

256

-0.4

-0.2

0

0.2

0.4

FIN = 5MHz

Figure 6-14. DNL vs ADC Code

ADC3908D025, ADC3908D065, ADC3908D125

ADC3908S025, ADC3908S065, ADC3908S125

SBASAU9 – OCTOBER 2024

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