AD9260 Analog Devices, AD9260 Datasheet - Page 14

• Manufacturer Part Number: AD9260
• Description: 16-Bit High Speed Oversampled A/D Converter
• Manufacturer: Analog Devices

Specifications of AD9260

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 2.5MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 4 V p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: QFP

AD9260
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = DVDD = DRVDD = +5.0 V, 4 V Input Span, Differential DC Coupled Input with CML = 2.0 V, f
Figure 11. Spectral Plot of the AD9260 at 100 kHz Input, 20 MHz Clock,
Figure 12. Spectral Plot of the AD9260 at 100 kHz Input, 20 MHz Clock,
Figure 13. Spectral Plot of the AD9260 at 100 kHz Input, 20 MHz Clock,
–100
–120
–100
–120
–100
–120
–20
–40
–60
–80
–20
–40
–60
–80
–20
–40
–60
–80
0
0
0
0
0
0
0.5
0.2
0.5
1.0
8x OSR (2.5 MHz Output Data Rate)
2x OSR (10 MHz Output Data Rate)
4x OSR (5 MHz Output Data Rate)
1.5
0.4
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
1.0
2.0
0.6
2.5
1.5
3.0
0.8
100kHz INPUT
20MHz CLOCK
8 × DECIMATION
THD: –96dB
100kHz INPUT
20MHz CLOCK
4 × DECIMATION
THD: –98dB
100kHz INPUT
20MHz CLOCK
2 × DECIMATION
THD: –98dB
3.5
1.0
2.0
4.0
4.5
1.2
2.5
5.0
Rev. C | Page 14 of 44
Figure 15. Dual-Tone SFDR vs. Input Frequency (F
Figure 16. Two-Tone Spectral Performance of the AD9260 Given Inputs at
Figure 14. Spectral Plot of the AD9260 at 100 kHz Input, 20 MHz Clock,
–100
–120
–100
–120
–20
–40
–60
–80
–20
–40
–60
–80
110
106
102
98
94
90
0
0
0
0
0
DUAL-TONE TEST
f1 = 1.0MHz
f2 = 975kHz
20MHz CLOCK
8 × DECIMATION
IM3: –94dB
975 kHz and 1.0 MHz, 20 MHz Clock, 8x Decimation
–6.5dBFS/TONE
1
–26dBFS/TONE
0.2
Undecimated (20 MHz Output Data Rate)
0.2
2
–12dBFS/TONE
3
0.4
Frequency, Mode = 8x)
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
0.4
4
CLOCK
0.6
–46dBFS/TONE
5
= 20 MSPS, Full Bias.
0.6
6
0.8
100kHz INPUT
20MHz CLOCK
1 × DECIMATION
THD: –98dB
7
1
= F
1.0
0.8
2
8
, Span = 10% Center
9
1.2
1.0
10