EVAL-AD7678CB Analog Devices Inc, EVAL-AD7678CB Datasheet - Page 13

• Manufacturer Part Number: EVAL-AD7678CB
• Description: BOARD EVALUATION FOR AD7678
• Manufacturer: Analog Devices Inc
• Series: PulSAR®r

Specifications of EVAL-AD7678CB

• Number Of Adc's: 1
• Number Of Bits: 18
• Sampling Rate (per Second): 100k
• Data Interface: Serial, Parallel
• Inputs Per Adc: 1 Differential
• Input Range: ±VREF
• Power (typ) @ Conditions: 31mW @ 100kSPS
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Utilized Ic / Part: AD7678
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

101
100
99
98
97
–100
–110
–120
–130
–140
–150
104
103
102
101
100
–80
–90
99
98
–55
–60
S/(N+D)
SNR
Figure 13. SNR, S/(N+D), and ENOB vs. Temperature
0
–35
Figure 11. THD and Harmonics vs. Frequency
Figure 12. SNR and S/(N+D) vs. Input Level
THD
HARMONIC
–50
THIRD
–15
10
5
–40
TEMPERATURE (C)
INPUT LEVEL (dB)
FREQUENCY (kHz)
20
25
–30
45
30
65
–20
ENOB
V
HARMONIC
85
SECOND
REF
40
= 4.096V
–10
105
S/(N+D)
03084-0-018
03084-0-017
03084-0-016
SNR
125
16.5
16.0
15.5
15.0
14.5
0
50
Rev. A | Page 13 of 28
–100
–110
–120
–130
–140
10000
1000
0.001
1000
Figure 16. Power-Down Operating Currents vs. Temperature
800
600
400
200
0.01
100
0.1
10
0
–55
–55
1
1
Figure 14. THD and Harmonics vs. Temperature
Figure 15. Operating Current vs. Sampling Rate
–35
–35
THD
–15
10
–15
SECOND
HARMONIC
AVDD
5
5
SAMPLING RATE (SPS)
TEMPERATURE (C)
TEMPERATURE (  C)
DVDD
100
25
25
THIRD
HARMONIC
OVDD
45
45
1k
65
65
85
85
10k
OVDD
DVDD
AVDD
105
105
03084-0-019
03084-0-021
AD7678
03084-0-020
125
125
100k