ADS5424 Datasheet

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ADS5424

www.ti.com

SLWS157A 鈭?JANUARY 2005 鈭?REVISED MAY 2005

Typical values are at TA = 25掳C, AVDD = 5 V, DRVDD = 3.3 V, differential input amplitude = 鈭? dBFS, sampling rate = 105 MSPS, 3 VPP

sinusoidal clock, 50% duty cycle, 16k FFT points, unless otherwise noted

AC PERFORMANCE

vs

INPUT AMPLITUDE

120

100

AC Performance 鈭?dB

SFDR (dBFS)

AC PERFORMANCE

vs

INPUT AMPLITUDE

120

100

AC Performance 鈭?dB

SFDR (dBFS)

80

SNR (dBFS)

80

SNR (dBFS)

60

40

20

SNR (dBc)

SFDR (dBc)

60

40

20

SNR (dBc)

SFDR (dBc)

0

鈭?0

鈭?0

fS = 92.16 MSPS

fIN = 70 MHz

0

0

鈭?0

鈭?0

fS = 92.16 MSPS

fIN = 170 MHz

鈭?0

鈭?0

鈭?0

鈭?0

鈭?0

鈭?0

鈭?0

鈭?0

鈭?0

鈭?0

鈭?0

鈭?0

鈭?0

鈭?0

鈭?0

鈭?0

0

AIN 鈭?Input Amplitude 鈭?dB

AIN 鈭?Input Amplitude 鈭?dBFS

Figure 14

TWO-TONE SPURIOUS-FREE DYNAMIC RANGE

vs

INPUT AMPLITUDE

120

100

80

60

40

20

90 dBFS Line

SFDR (dBc)

SFDR (dBFS)

Figure 15

SFDR 鈭?Two-Tone Spurious-Free Dynamic Range 鈭?dB

NOISE HISTOGRAM WITH INPUTS SHORTED

40

35

30

Percentage 鈭?%

25

20

15

10

0

fIN1 = 69 MHz

fIN2 = 71 MHz

fS = 92.16 MSPS

5

0

0

8174

8175

8176

8177

8178

8179

鈭?0

鈭?10鈭?00 鈭?0 鈭?0 鈭?0 鈭?0 鈭?0 鈭?0 鈭?0 鈭?0 鈭?0

AIN 鈭?Input Amplitude 鈭?dBFS

Code Number

Figure 16

TOTAL POWER

vs

SAMPLING FREQUENCY

1.90

1.89

PT 鈭?Total Power 鈭?W

1.88

1.87

1.86

1.85

1.84

1.83

1.82

1.81

0

20

40

60

80

100

120

140

fS 鈭?Sampling Frequency 鈭?MSPS

Power Output 鈭?dB

fIN= 70 MHz

Figure 17

INPUT BANDWIDTH

2

0

鈭?

鈭?

鈭?

鈭?

鈭?0

1

10

100

1k

f 鈭?Frequency 鈭?MHz

fS = 105 MSPS

AIN = 鈭? dBFS

Figure 18

Figure 19

12

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