AD871 datasheet(7/16 Pages) AD

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INPUT FREQUENCY – Hz

10k

100k

10M

69.5

65.5

61.5

63.5

67.5

68.5

66.5

64.5

62.5

–0.5dB

–0.6dB

Figure 2. AD871 S/(N+D) vs. Input Frequency

THD

3RD

HARMONIC

2ND

HARMONIC

10k

100k

10M

INPUT FREQUENCY – Hz

Figure 3. AD871 Distortion vs. Input Frequency,

Full-Scale Input

fIN = 1MHz

fIN Amplitude = –0.5dB

THD = –69dB

S/(N+D) = 66dB

SFDR = 70dB

HARMONICS – dB

2ND

3RD

4TH

5TH

6TH

7TH

8TH

9TH

–80

–70

–96

–85

–90

–95

–90

–101

Figure 4. AD871 Typical FFT, fIN = 1 MHz, fIN Amplitude = –0.5 dB

IN = 1MHz

IN AMPLITUDE = –6.0dB

THD = –77dB

S/(N+D) = 65dB

SFDR = 74dB

HARMONICS – dB

2ND

3RD

4TH

5TH

6TH

7TH

8TH

9TH

–82

–79

–93

–95

–94

–95

–98

–94

Figure 5. AD871 Typical FFT, fIN = 1 MHz, fIN Amplitude = –6 dB

Dynamic Characteristics–Sample Rate: 5 MSPS–AD871

REV. A

–7–

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