AD7654 Analog Devices, AD7654 Datasheet - Page 13

• Manufacturer Part Number: AD7654
• Manufacturer: Analog Devices

Specifications of AD7654

• Resolution (bits): 16bit
• # Chan: 4
• Sample Rate: 500kSPS
• Interface: Par,Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref) x 2,Uni 5.0V
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

–100
–105
–110
–115
100
Figure 12. SNR and SINAD vs. Input Level (Referred to Full Scale)
–60
–65
–70
–75
–80
–85
–90
–95
Figure 13. THD, Harmonics, Crosstalk, and SFDR vs. Frequency
95
90
85
80
75
70
92
90
88
86
–60
1
1
CROSSTALK B TO A
CROSSTALK A TO B
Figure 11. SNR, SINAD, and ENOB vs. Frequency
SFDR
THD
ENOB
SNR
SINAD
–50
–40
10
10
FREQUENCY (kHz)
FREQUENCY (kHz)
INPUT LEVEL (dB)
–30
–20
100
100
HARMONIC
HARMONIC
THIRD
SECOND
–10
SINAD
SNR
1000
1000
0
16.0
15.5
15.0
14.5
14.0
13.5
13.0
115
110
105
100
95
90
85
80
75
70
65
60
Rev. B | Page 13 of 28
0.0001
0.001
–10
0.01
100
10
–2
–4
–6
–8
0.1
10
50
40
30
20
10
8
6
4
2
0
1
0
–55
Figure 14. Full-Scale Error and Zero Error vs. Temperature
1
0
NORMAL DVDD
IMPULSE AVDD
OVDD 2.7V
Figure 16. Typical Delay vs. Load Capacitance C
Figure 15. Operating Currents vs. Sample Rate
–35
OVDD = 5V @ 85°C
–15
50
OVDD = 2.7V @ 25°C
SAMPLING RATE (kSPS)
10
5
TEMPERATURE (°C)
OVDD = 2.7V @ 85°C
25
IMPULSE DVDD
C
FULL-SCALE ERROR
L
100
(pF)
45
ZERO ERROR
OVDD = 5V @ 25°C
100
65
NORMAL AVDD
150
85
105
L
AD7654
1000
125
200