AD9225 查看數據表（PDF） - Analog Devices

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AD9225

Complete 12-Bit, 25 MSPS Monolithic A/D Converter

Analog Devices 

90

80

SFDR INT 2V REF

70

60

SNR INT 2V REF

50

40

30

–40 –35 –30 –25 –20 –15 –10 –5

0

AIN (dB)

TPC 7. SNR/SFDR vs. AIN (Input Amplitude)

(fIN = 12.5 MHz, Input Span = 4.0 V p-p, VCM = 2.5 V

Differential Input)

–65

؊20.0dB 2V INT REF

–70

–75

–80

؊6.0dB 2V INT REF

–85

؊0.5dB 2V INT REF

–90

1

10

FREQUENCY (MHz)

TPC 8. THD vs. Input Frequency (Input Span =

4.0 V p-p, VCM = 2.5 V Single-Ended Input)

246447

AD9225

–70

–75

–80

INT 1V REF

–85

INT 2V REF

–90

10

FREQUENCY (MHz)

TPC 10. THD vs. Sample Rate, (AIN = –0.5 dB,

VCM = 2.5 V, Input Span = 4.0 V p-p Differential Input)

75

؊0.5dB 2V INT REF

70

؊6.0dB 2V INT REF

65

60

55

؊20.0dB 2V INT REF

50

1

10

FREQUENCY (MHz)

TPC 11. SNR vs. Input Frequency (Input Span =

4.0 V p-p, VCM = 2.5 V Single-Ended Input)

3299

4206

N–1

N

N+1

BIN

TPC 9. Grounded-Input Histogram (Input Span =

40 V p-p)

REV. B

–7–

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