AD7655 Analog Devices, AD7655 Datasheet - Page 13

• Manufacturer Part Number: AD7655
• Manufacturer: Analog Devices

Specifications of AD7655

• Resolution (bits): 16bit
• # Chan: 4
• Sample Rate: 1MSPS
• Interface: Par,Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref) x 2
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

–105
–110
–100
–75
–80
–85
–95
–90
100
Figure 12. THD, Harmonics, Crosstalk, and SFDR vs. Frequency
–1
–2
–3
–4
–5
95
90
85
80
75
70
5
4
3
2
1
0
1
–55
Figure 13. Full-Scale Error and Zero Error vs. Temperature
1
FULL-SCALE ERROR
CROSSTALK A TO B
Figure 11. SNR, SINAD, and ENOB vs. Frequency
–35
CROSSTALK B TO A
SFDR
THIRD HARMONIC
–15
10
10
5
FREQUENCY (kHz)
TEMPERATURE (°C)
FREQUENCY (kHz)
THD
25
SECOND HARMONIC
45
100
ZERO ERROR
100
65
ENOB
85
SNR
105
SINAD
1000
125
1000
100
95
75
70
105
90
85
80
15.5
15.0
13.5
13.0
16.0
14.5
14.0
Rev. B | Page 13 of 28
0.0001
0.001
0.01
100
0.1
10
50
40
30
20
10
0
1
0
1
NORMAL DVDD
IMPULSE AVDD
OVDD 2.7V
Figure 15. Typical Delay vs. Load Capacitance C
Figure 14. Operating Currents vs. Sample Rate
50
OVDD = 2.7V @ 25°C
SAMPLING RATE (kSPS)
10
OVDD = 5V @ 25°C
IMPULSE DVDD
C
L
100
(pF)
OVDD = 2.7V @ 85°C
100
OVDD = 5V @ 85°C
NORMAL AVDD
150
L
AD7655
1000
200