AD7190 Analog Devices, AD7190 Datasheet - Page 13

• Manufacturer Part Number: AD7190
• Description: 4.8 kHz Ultra-Low Noise 24-Bit Sigma-Delta ADC with PGA
• Manufacturer: Analog Devices

Specifications of AD7190

• Resolution (bits): 24bit
• # Chan: 4
• 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: SOP

Figure 10. Noise (V
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
80
70
60
50
40
30
20
10
0
Figure 11. Noise Distribution Histogram (V
0
100
REF
200
= 5 V, Output Data Rate = 4800 Hz, Gain = 1, Chop
Disabled, Sinc
300
400
CODE
SAMPLES
500
4
Filter)
600
700
REF
800
= 5 V,
900
4
Filter)
1000
Rev. B | Page 13 of 40
–1.0
–2.0
–3.0
3.0
2.0
1.0
–2
–4
–6
–0.020 –0.015 –0.010 –0.005
6
4
2
0
0
–2.5
–2.0
–1.5
Figure 13. INL (Gain = 128)
Figure 12. INL (Gain = 1)
–1.0
–0.5
V
V
IN
IN
0
0
(V)
(V)
0.005
0.5
1.0
0.010
1.5
0.015
2.0
AD7190
0.020
2.5