AD7621AST Analog Devices Inc, AD7621AST Datasheet - Page 13

• Manufacturer Part Number: AD7621AST
• Description: IC ADC 16BIT 2MSPS DIFF 48LQFP
• Manufacturer: Analog Devices Inc
• Series: PulSAR®r

Specifications of AD7621AST

• Number Of Bits: 16
• Sampling Rate (per Second): 2M
• Data Interface: Serial, Parallel
• Number Of Converters: 1
• Power Dissipation (max): 86mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• For Use With: EVAL-AD7621CBZ - BOARD EVALUATION FOR AD7621
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

–100
–105
–110
–115
–120
–70
–75
–80
–85
–90
–95
95
93
91
89
87
85
83
81
79
77
75
–100
–120
–140
–160
–180
–20
–40
–60
–80
1
1
0
0
Figure 13. THD, Harmonics, and SFDR vs. Frequency
SECOND
HARMONIC
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500
Figure 12. SNR, SINAD and ENOB vs. Frequency
THIRD
HARMONIC
10
Figure 11. FFT 20 kHz
10
FREQUENCY (kHz)
FREQUENCY (kHz)
FREQUENCY (kHz)
THD
SINAD
100
100
ENOB
SFDR
f
f
SNR = 90.1dB
THD = –103.2dB
SFDR = 103.8dB
SINAD = 89.9dB
S
IN
= 3MSPS
= 20.1kHz
SNR
1000
1000
16.0
15.6
15.2
14.8
14.4
14.0
13.6
13.2
12.8
12.4
12.0
120
110
100
90
80
70
60
50
40
30
20
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–100
–105
–110
–115
–120
–125
–130
–80
–85
–90
–95
92
91
90
89
88
87
86
85
84
–100
–120
–140
–160
–180
–55
–20
–40
–60
–80
–55
0
Figure 16. THD, Harmonics, and SFDR vs. Temperature
0
SECOND HARMONIC
–35
Figure 15. SNR, SINAD, and ENOB vs. Temperature
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500
–35
–15
SFDR
–15
SINAD
THD
Figure 14. FFT 100 kHz
5
TEMPERATURE ( ° C)
5
TEMPERATURE ( ° C)
FREQUENCY (kHz)
SNR
25
25
THIRD HARMONIC
45
45
ENOB
65
65
85
85
f
f
SNR = 89.9dB
THD = –104.9dB
SFDR = 106.6dB
SINAD = 89.8dB
S
IN
= 3MSPS
= 98.79kHz
105
105
AD7621
125
125
16.0
15.5
15.0
14.5
14.0
110
105
100
95
90
85
80
75
70
65
60