AD9260ASZ datasheet(15/45 Pages) AD

15 / 45 page

AD9260

Rev. C | Page 14 of 44

TYPICAL PERFORMANCE CHARACTERISTICS

AVDD = DVDD = DRVDD = +5.0 V, 4 V Input Span, Differential DC Coupled Input with CML = 2.0 V, fCLOCK = 20 MSPS, Full Bias.

–120

–100

–80

–60

–40

–20

0.4

0.6

0.2

0.8

1.0

1.2

FREQUENCY (MHz)

100kHz INPUT

20MHz CLOCK

× DECIMATION

THD: –96dB

Figure 11. Spectral Plot of the AD9260 at 100 kHz Input, 20 MHz Clock,

8x OSR (2.5 MHz Output Data Rate)

–120

–100

–80

–60

–40

–20

0.5

1.0

1.5

2.0

2.5

FREQUENCY (MHz)

100kHz INPUT

20MHz CLOCK

× DECIMATION

THD: –98dB

Figure 12. Spectral Plot of the AD9260 at 100 kHz Input, 20 MHz Clock,

4x OSR (5 MHz Output Data Rate)

–120

–100

–80

–60

–40

–20

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

FREQUENCY (MHz)

100kHz INPUT

20MHz CLOCK

× DECIMATION

THD: –98dB

Figure 13. Spectral Plot of the AD9260 at 100 kHz Input, 20 MHz Clock,

2x OSR (10 MHz Output Data Rate)

–120

–100

–80

–60

–40

–20

FREQUENCY (MHz)

100kHz INPUT

20MHz CLOCK

× DECIMATION

THD: –98dB

Figure 14. Spectral Plot of the AD9260 at 100 kHz Input, 20 MHz Clock,

Undecimated (20 MHz Output Data Rate)

102

106

110

0.2

0.4

0.6

0.8

1.0

FREQUENCY (MHz)

–12dBFS/TONE

–26dBFS/TONE

–46dBFS/TONE

–6.5dBFS/TONE

Figure 15. Dual-Tone SFDR vs. Input Frequency (F1 = F2, Span = 10% Center

Frequency, Mode = 8x)

–120

–100

–80

–60

–40

–20

0.4

0.6

0.2

0.8

1.0

1.2

FREQUENCY (MHz)

DUAL-TONE TEST

f1 = 1.0MHz

f2 = 975kHz

20MHz CLOCK

× DECIMATION

IM3: –94dB

Figure 16. Two-Tone Spectral Performance of the AD9260 Given Inputs at

975 kHz and 1.0 MHz, 20 MHz Clock, 8x Decimation

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