AD9258 Analog Devices, AD9258 Datasheet - Page 17

• Manufacturer Part Number: AD9258
• Description: 14-Bit, 125 MSPS, 1.8 V Dual Analog-to-Digital Converter (ADC)
• Manufacturer: Analog Devices

Specifications of AD9258

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 125MSPS
• Interface: Par
• Analog Input Type: Diff-Bip
• Ain Range: (2Vref) p-p,1 V p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = 1.8 V, DRVDD = 1.8 V, rated sample rate, DCS enabled, 1.0 V internal reference, 2 V p-p differential input, VIN = −1.0 dBFS, and
32k sample, T
–100
–120
–140
–100
–120
–140
–100
–120
–140
–20
–40
–60
–80
–20
–40
–60
–80
–20
–40
–60
–80
Figure 10. AD9258-80 Single-Tone FFT with f
0
0
Figure 9. AD9258-80 Single-Tone FFT with f
0
Figure 8. AD9258-80 Single-Tone FFT with f
0
0
0
SECOND HARMONIC
A
SECOND HARMONIC
= 25°C, unless otherwise noted
THIRD HARMONIC
10
10
10
SECOND HARMONIC
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
20
20
20
THIRD HARMONIC
THIRD HARMONIC
80MSPS
2.4MHz @ –1dBFS
SNR = 78.2dB (79.2dBFS)
SFDR = 99dBc
80MSPS
70.1MHz @ –1dBFS
SNR = 77.0dB (78.0dBFS)
SFDR = 89.0dBc
80MSPS
140.1MHz @ –1dBFS
SNR = 75.5dB (76.5dBFS)
SFDR = 82.0dBc
IN
IN
30
30
30
IN
= 70.1 MHz
= 140.1 MHz
= 2.4 MHz
40
40
40
Rev. A | Page 17 of 44
Figure 13. AD9258-80 Single-Tone SNR/SFDR vs. Input Amplitude (A
Figure 12. AD9258-80 Single-Tone FFT with f
–100
–120
–140
–100
–120
–140
–20
–40
–60
–80
–20
–40
–60
–80
120
100
Figure 11. AD9258-80 Single-Tone FFT with f
80
60
40
20
–100 –90
0
0
0
0
0
80MSPS
200.3MHz @ –1dBFS
SNR = 74.3dB (75.3dBFS)
SFDR = 83dBc
SECOND HARMONIC
–80
10
10
SECOND HARMONIC
–70
INPUT AMPLITUDE (dBFS)
with f
FREQUENCY (MHz)
FREQUENCY (MHz)
–60
IN
Enabled
= 98.12 MHz
–50
20
20
THIRD HARMONIC
–40
80MSPS
70.1MHz @ –6dBFS
SNR = 71.6dB (77.6dBFS)
SFDR = 97dBc
IN
= 70.1 MHz with Dither
–30
THIRD HARMONIC
IN
30
30
SNR (dBFS)
SFDR (dBc)
SNR (dBc)
SFDR (dBFS)
= 200.1 MHz
–20
–10
AD9258
40
40
0
IN
)