AD7195 Analog Devices, AD7195 Datasheet - Page 11

• Manufacturer Part Number: AD7195
• Description: 4.8 kHz, Ultralow Noise, 24-Bit Sigma-Delta ADC with PGA and AC Excitation
• Manufacturer: Analog Devices

Specifications of AD7195

• Resolution (bits): 24bit
• # Chan: 4
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni,SE-Bip,SE-Uni
• Ain Range: (2Vref/PGA Gain) p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: CSP

TYPICAL PERFORMANCE CHARACTERISTICS
8,388,760
8,388,758
8,388,756
8,388,754
8,388,752
8,388,750
8,388,748
8,388,746
8,388,950
8,388,900
8,388,850
8,388,800
8,388,750
8,388,700
8,388,650
8,388,600
8,388,550
8,388,500
8,388,450
Figure 8. Noise (V
Output Data Rate = 4.7 Hz, Gain = 128, Chop Disabled, Sinc
Figure 6. Noise (V
250
200
150
100
50
0
0
0
Figure 7. Noise Distribution Histogram (V
100
REF
REF
200
200
Chop Disabled, Sinc
= 5 V, Output Data Rate = 4800 Hz, Gain = 128,
Chop Disabled, Sinc
= 5 V, Output Data Rate = 4.7 Hz, Gain = 128,
300
400
400
SAMPLES
SAMPLE
CODE
500
4
4
Filter)
Filter)
600
600
700
REF
= 5 V,
800
800
900
4
Filter)
1000
1000
Rev. 0 | Page 11 of 44
Output Data Rate = 4800 Hz, Gain = 128, Chop Disabled, Sinc
8,388,820
8,388,800
8,388,780
8,388,760
8,388,740
8,388,720
8,388,700
8,388,680
8,388,660
8,388,640
8,388,620
Output Data Rate = 4800 Hz, Gain = 1, Chop Disabled, Sinc
Figure 10. Noise (V
8,388,490
8,388,620
30
25
20
15
10
80
70
60
50
40
30
20
10
5
0
0
Figure 11. Noise Distribution Histogram (V
0
Figure 9. Noise Distribution Histogram (V
8,388,576
100
8,388,660
200
REF
Chop Disabled, Sinc
= 5 V, Output Data Rate = 4800 Hz, Gain = 1,
8,388,662
300
8,388,700
400
CODE
CODE
SAMPLES
8,388,748
8,388,740
500
4
Filter)
600
8,388,834
700
8,388,780
REF
REF
= 5 V,
800
= 5 V,
AD7195
8,388,920
900
8,388,820
4
4
Filter)
Filter)
1000