ad7688brm Analog Devices, Inc., ad7688brm Datasheet - Page 9

• Manufacturer Part Number: ad7688brm
• Description: 16-bit, 1.5 Lsb Inl, 500 Ksps Pulsar? Differential Adc In Msop/qfn
• Manufacturer: Analog Devices, Inc.

TYPICAL PERFORMANCE CHARACTERISTICS
300000
250000
200000
150000
100000
50000
–100
–120
–140
–160
–180
–0.5
–1.0
–1.5
–20
–40
–60
–80
1.5
1.0
0.5
0
0
0
0
0
Figure 8. Histogram of a DC Input at the Code Center
6F
0
25
Figure 7. Integral Nonlinearity vs. Code
50
16384
70
0
75
Figure 9. FFT Plot
2930
71
FREQUENCY (kHz)
100
CODE IN HEX
32768
CODE
256159
125
72
POSITIVE INL = +0.31LSB
NEGATIVE INL = –0.39LSB
150
2031
73
16384 POINT FFT
VDD = REF = 5V
F
F
SNR = 95.6dB
THD = –117.7dB
SFDR = –117.9dB
2nd HARM = –125dB
3rd HARM = –119dB
S
IN
175
= 500KSPS
= 2kHz
49152
VDD = REF = 5V
74
200
0
225
75
0
65535
250
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160000
140000
120000
100000
80000
60000
40000
20000
–0.5
–1.0
–1.5
100
1.5
1.0
0.5
99
98
97
96
95
94
93
92
91
90
–10
0
0
0
Figure 11. Histogram of a DC Input at the Code Transition
71
0
Figure 10. Differential Nonlinearity vs. Code
–8
16384
Figure 12. SNR vs. Input Level
72
0
INPUT LEVEL (dB)
124933
–6
CODE IN HEX
73
32768
CODE
136187
POSITIVE DNL = +0.37LSB
NEGATIVE DNL = –0.21LSB
74
–4
49152
VDD = REF = 5V
75
0
–2
AD7688
76
0
65535
0