AD7194 Analog Devices, AD7194 Datasheet - Page 12

• Manufacturer Part Number: AD7194
• Description: 8-Channel, 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA
• Manufacturer: Analog Devices

Specifications of AD7194

• Resolution (bits): 24bit
• # Chan: 8
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref/PGA Gain) p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: CSP

AD7194
TYPICAL PERFORMANCE CHARACTERISTICS
8,387,952
8,387,950
8,387,948
8,387,946
8,387,944
8,387,942
8,387,940
8,387,938
8,387,936
8,387,934
8,388,920
8,388,910
8,388,900
8,388,890
8,388,880
8,388,870
8,388,860
8,388,850
8,388,840
8,388,830
Output Data Rate = 4.7 Hz, Gain = 128, Chop Disabled, Sinc
Figure 8. Noise (V
Figure 6. Noise (V
200
150
100
8,387,936
50
Figure 7. Noise Distribution Histogram (V
0
0
0
8,387,938
Gain = 128, Chop Disabled, Sinc
Gain = 1, Chop Disabled, Sinc
8,387,940
200
200
REF
REF
= AV
= AV
8,387,942
DD
DD
= 5 V, Output Data Rate = 2400 Hz,
400
400
= 5 V, Output Data Rate = 4.7 Hz,
8,387,944
SAMPLE
CODE
SAMPLE
8,387,946
600
600
4
4
Filter)
REF
8,387,948
Filter)
= AV
800
800
DD
8,387,950
= 5 V,
4
Filter)
1000
1000
Rev. 0 | Page 12 of 56
Figure 10. Noise (V
Figure 11. Noise Distribution Histogram (V
42.1 Hz (FS[9:0] = 6, Average by 16), Gain = 1, Chop Disabled, Sinc
8,388,880
8,388,878
8,388,876
8,388,874
8,388,872
8,388,870
8,388,868
8,388,866
8,388,864
Output Data Rate = 2400 Hz, Gain = 1, Chop Disabled, Sinc
8,388,830
50
40
30
20
10
200
150
100
8,388,864
0
50
Figure 9. Noise Distribution Histogram (V
0
Average by 16), Gain = 1, Chop Disabled, Sinc
0
REF
8,388,868
= AV
200
8,388,860
DD
= 5 V, Output Data Rate = 42.1 Hz (FS[9:0] = 6,
8,388,872
400
CODE
SAMPLE
CODE
REF
= AV
8,388,890
8,388,876
600
DD
REF
= 5 V, Output Data Rate =
= AV
4
800
DD
Filter)
8,388,880
= 5 V,
8,388,920
4
Filter)
4
Filter)
1000