EVAL-AD7688CB Analog Devices Inc, EVAL-AD7688CB Datasheet - Page 9

• Manufacturer Part Number: EVAL-AD7688CB
• Description: BOARD EVALUATION FOR AD7688
• Manufacturer: Analog Devices Inc
• Series: PulSAR®r

Specifications of EVAL-AD7688CB

• Number Of Adc's: 1
• Number Of Bits: 16
• Sampling Rate (per Second): 500k
• Data Interface: Serial
• Inputs Per Adc: 1 Differential
• Input Range: ±VREF
• Power (typ) @ Conditions: 21.5mW @ 500kSPS, 5 V
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: AD7688
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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