AD9281 데이터 시트보기 (PDF) - Analog Devices

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AD9281

Dual Channel 8-Bit Resolution CMOS ADC

Analog Devices 

AD9281–Typical Characteristic Curves

(AVDD = +3 V, DVDD = +3 V, FS = 28 MHz (50% duty cycle), 2 V input span from –0.5 V to +1.5 V, 2 V internal reference unless otherwise noted)

1

55

50

–0.5dB

45

–6dB

0

40

35

30

–20dB

–1

0 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240

CODE OFFSET

Figure 3. Typical INL

25

1.0E+05

1.0E+06

1.0E+07

INPUT FREQUENCY – Hz

1.0E+08

Figure 6. SNR vs. Input Frequency

1

0

–1

0 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240

CODE OFFSET

Figure 4. Typical DNL

55

50

–0.5dB

45

–6dB

40

35

30

–20dB

25

1.0E+05

1.0E+06

1.0E+07

INPUT FREQUENCY – Hz

1.0E+08

Figure 7. SINAD vs. Input Frequency

1.00

0.80

0.60

0.40

0.20

0.00

–0.20

–0.40

–0.60

–0.80

–1.00

–1.0

–0.5

0

0.5

1.0

1.5

2.0

INPUT VOLTAGE – Volts

Figure 5. Input Bias Current vs. Input Voltage

–30

–35

–40

–20dB

–45

–50

–55

–6dB

–60

–65

–70

1.0E+05

–0.5dB

1.0E+06

1.0E+07

INPUT FREQUENCY – Hz

1.0E+08

Figure 8. THD vs. Input Frequency

–6–

REV. E

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