HY3118/HY3116 Datasheet

HY3118/HY3116
24-Bit Analog-to-Digital Convert
High Resolution Σ∆ADC
The RMS Noise and Peak-to-Peak noise are referred to the noise generated from the
chip itself at the input end. RMS Noise is ADC input noise and the Peak-to-Peak noise
referring in this spec is the deviation of maximum and minimum noise of 1000 records (±3.3
standard deviation).
In
ENOB
In
FSR
RMS Noise
2
In
Noise - Free Bits
FSR
Peak-to-Peak Noise
In
2
Occurrence
300
250
200
150
100
50
0
Gain=1
Output rate ~ 10sps
RMS Noise Diagram
-5 -4 -3 -2 -1 0 1 2 3 4 5
Output Code (LSB)
LSB base on 21-bit output
Output Code (LSB)
RMS Noise Diagram
5
Gain=1
4
Output rate ~ 10sps
3
2
1
0
-1
-2
-3
-4
-5
1 201 401 601 801 1001
Time (reading number)
LSB base on 21-bit output
Figure 5 RMS Noise Diagram
RMS Noise Diagram
.
Figure 6 Output Code Diagram
RMS Noise Diagram
Occurrence
400
350
300
250
200
150
100
50
0
Gain=128
Output rate ~ 10sps
-5 -4 -3 -2 -1 0 1 2 3 4 5
Output Code (LSB)
LSB base on 18-bit output
Figure 7 RMS Noise Diagram
Output Code (LSB)
5
Gain=128
4
Output rate ~ 10sps
3
2
1
0
-1
-2
-3
-4
-5
1 201 401 601 801 1001
Time (reading number)
Figure 8 Output Code Diagram
LSB base on 18-bit output
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www.hycontek.com
DS-HY3118- V08_EN
Page 22