AD9260 Analog Devices, AD9260 Datasheet - Page 20

• 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 AC CHARACTERIZATION CURVES
AVDD = DVDD = DRVDD = +5 V, 4 V Input Span, A
100
100
100
80
60
40
20
80
60
40
20
95
90
85
80
75
70
65
60
55
50
0
0
5
5
0
Figure 47. SFDR vs. Clock Rate (f
Figure 48. SFDR vs. Clock Rate (f
Figure 49. SFDR vs. Clock Rate (f
10
10
5
CLOCK FREQUENCY (MHz)
CLOCK FREQUENCY (MHz)
CLOCK FREQUENCY (MHz)
QUARTER BIAS
10
15
15
QUARTER BIAS
HALF BIAS
QUARTER BIAS
IN
IN
IN
= 1.0 MHz in 2x Mode)
= 100 kHz in 8x Mode)
= 500 kHz in 4x Mode)
HALF BIAS
15
20
20
HALF BIAS
FULL BIAS
FULL BIAS
FULL BIAS
IN
= –0.5 dBFS, Differential DC Coupled Input with CML = 2 V.
25
25
20
Rev. C | Page 20 of 44
–100
–60
–65
–70
–75
–80
–85
–90
–95
–40
–50
–60
–70
–80
–90
100
95
90
85
80
75
1.0
Figure 51. CMR vs. Input Frequency (V
1k
0
Figure 52. 4 V vs. 1.6 V Span SNR/SFDR (f
1.6V SPAN SNR-8 × MODE
Figure 50. THD vs. Common-Mode Input Level (CML)
1.2
0.2
10k
4V SPAN SFDR-2 × MODE
1.4
COMMON MODE INPUT LEVEL (V)
0.4
1.6
INPUT FREQUENCY (Hz)
FREQUENCY (MHz)
0.6
100k
1.8
F
F
IN
IN
4V SPAN SNR-8 × MODE
1.6V SPAN SFDR-2 × MODE
= 1MHz, 2 × MODE
= 100kHz, 8 × MODE
2.0
F
F
0.8
S
S
= 20MHz
= 10MHz
2.2
1M
1.0
CML
2.4
= 2 V p-p, 1x Mode)
CLOCK
1.2
10M
2.6
= 20 MSPS)
F
S
1.
= 5MHz
2.8
4
100M
1.6
3.0