AD7699 Analog Devices, AD7699 Datasheet - Page 8

• Manufacturer Part Number: AD7699
• Description: 16-Bit, 8-Channel, 500 kSPS PulSAR ADC
• Manufacturer: Analog Devices

Specifications of AD7699

• Resolution (bits): 16bit
• # Chan: 8
• Sample Rate: 500kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni,SE-Bip,SE-Uni
• Ain Range: (Vref) p-p,4 V p-p,Bip (Vref) x 0.5,Uni (Vref)
• Adc Architecture: SAR
• Pkg Type: CSP

AD7699
TYPICAL PERFORMANCE CHARACTERISTICS
VDD = 5V, VREF = 5V, VIO = VDD, unless otherwise noted
–0.5
–1.0
–1.5
250,000
200,000
150,000
100,000
–100
–120
–140
–160
–180
1.5
1.0
0.5
50,000
–20
–40
–60
–80
0
0
0
0
0
Figure 6. Histogram of a DC Input at Code Center
7FF9 7FFA 7FFB 7FFC 7FFD 7FFE 7FFF 8000
25
0
Figure 5. Integral Nonlinearity vs. Code
16,384
50
Figure 7. 20 kHz FFT, VREF = 5 V
0
75
3
FREQUENCY (kHz)
100
13,341
CODES
32,768
CODE IN HEX
125
V
f
f
SNR = 92.3dB
SINAD = 91.5dB
THD = –98dB
SFDR = 100dB
SECOND HARMONIC = –111dB
THIRD HARMONIC = –101dB
220,840
S
IN
REF
= 500kSPS
= 19.94kHz
= 5V
150
26,926
175
49,152
10
200
σ = 0.51 LSB
V
REF
0
225
= 5V
65,536
8001
250
0
Rev. A | Page 8 of 28
–0.5
–1.0
250,000
200,000
150,000
100,000
–100
–120
–140
–160
–180
1.5
1.0
0.5
50,000
–20
–40
–60
–80
0
0
0
0
0
Figure 9. Histogram of a DC Input at Code Center
7FF9 7FFA 7FFB 7FFC 7FFD 7FFE 7FFF 8000
25
0
Figure 8. Differential Nonlinearity vs. Code
Figure 10. 20 kHz FFT, VREF = 4.096 V
16,384
50
0
75
119
FREQUENCY (kHz)
100
31,411
CODES
32,768
CODE IN HEX
125
191,013
V
f
f
SNR = 91.1dB
SINAD = 90.4dB
THD = –98dB
SFDR = 100dB
SECOND HARMONIC = –104dB
THIRD HARMONIC = –101dB
S
IN
REF
= 500kSPS
= 19.94kHz
= 4.096V
150
38,420
175
49,152
157
200
Data Sheet
σ = 0.78 LSB
V
REF
0
225
= 4.096V
65,536
8001
250
0