EVAL-AD7450ACB データシートの表示（PDF） - Analog Devices

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EVAL-AD7450ACB

Differential Input, 1 MSPS 10-Bit and 12-Bit ADCs in an 8-Lead SOT-23

Analog Devices 

AD7440/AD7450A

10,000

9,000

8,000

VIN+ = VIN–

10,000 CONVERSIONS

fS = 1MSPS

10,000

CODES

7,000

6,000

5,000

4,000

3,000

2,000

1,000

0

2044

2045

2046

2047

CODE

2048

2049

Figure 19. Histogram of 10,000 Conversions of a DC Input for the

AD7450A with VDD = 5 V

0

8192 POINT FFT

fSAMPLE = 1MSPS

–20

fIN = 100kHz

SINAD = +61.6dB

THD = –81.7dB

–40

SFDR = –83.1dB

–60

–80

–100

–120

–140

0

100

200

300

400

500

FREQUENCY (kHz)

Figure 20. AD7440 Dynamic Performance with VDD = 5 V

0.5

0.4

0.3

0.2

0.1

0

–0.1

–0.2

–0.3

–0.4

–0.5

0

256

512

768

CODE

1024

Figure 21. Typical DNL for the AD7440 for VDD = 5 V

0.5

0.4

0.3

0.2

0.1

0

–0.1

–0.2

–0.3

–0.4

–0.5

0

256

512

768

CODE

1024

Figure 22. Typical INL for the AD7440 for VDD = 5 V

Rev. C | Page 14 of 28

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