AD7946 Analog Devices, AD7946 Datasheet - Page 9

• Manufacturer Part Number: AD7946
• Manufacturer: Analog Devices

Specifications of AD7946

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 500kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (Vref) p-p
• Adc Architecture: SAR
• Pkg Type: CSP,SOP

90.0
87.5
85.0
82.5
80.0
2.3
90.0
87.5
85.0
82.5
80.0
100
95
90
85
80
75
70
Figure 12. SNR, SINAD, and ENOB vs. Reference Voltage
–55
0
2.7
–35
3.1
Figure 13. SNR vs. Temperature
Figure 14. SINAD vs. Frequency
–15
REFERENCE VOLTAGE (V)
50
3.5
5
TEMPERATURE (°C)
FREQUENCY (kHz)
3.9
25
REF = 5V, –1dB
100
4.3
45
REF = 5V, –10dB
65
4.7
150
SINAD
85
ENOB
5.1
SNR
REF = 5V
105
5.5
15.0
14.5
14.0
13.5
13.0
125
200
Rev. A | Page 9 of 24
–100
–105
–110
–115
–120
–100
–110
–120
–130
–100
–110
–120
–90
–95
–90
–60
–70
–80
–90
–55
2.3
0
Figure 15. THD, SFDR vs. Reference Voltage
–35
2.7
Figure 16. THD vs. Temperature
–15
Figure 17. THD vs. Frequency
3.1
50
SFDR
REFERENCE VOLTAGE (V)
5
TEMPERATURE (°C)
FREQUENCY (kHz)
3.5
THD
25
100
3.9
REF = 5V, –1dB
REF = 5V, –10dB
45
4.3
65
150
4.7
85
REF = 5V
5.1
AD7946
105
125
200
5.5