XE88LC05MI000 ETC1 [List of Unclassifed Manufacturers], XE88LC05MI000 Datasheet - Page 22

• Manufacturer Part Number: XE88LC05MI000
• Description: 16 + 10 bit Data Acquisition Ultra Low-Power Microcontroller
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

Data Acquisition Microcontroller
XE88LC05
8.6
Table 8.5:
8.7 Linearity
8.8 Integral Non-Linearity (INL) and Differential Non-Linearity (DNL) for 12-bit
Figure 8.3:
22
resolution
12
13
16
16
16
6
8
resolution
-0.2
-0.4
-0.6
-0.8
-1.0
1.0
0.8
0.6
0.4
0.2
0.0
0
12 bits - ADC converter (No PGA; ADC only) (version v5a)
Vbat = Vref = 5.0V; fs = 500kHz; OSR = 32; NELCONV = 4
500
oversampling per conversion = 1024
oversampling per conversion = 256
oversampling per conversion = 256
specification holds over 100% of the full scale.
3) NResol is the maximal readable resolution of the digital filter.
ADC performances examples
To quantify linearity errors, Integral Non-Linearity (INL) and Differential Non-Linearity (DNL)
were measured for the ADC alone and for gains of 1, 5, 10, 20, 100, 1000, and a resolution of
12 bits and 16 bits.
INL is defined as the deviation (in LSB) of the DC transfer curve of each individual code from
the best-fit straight line. This specification holds over the full scale.
DNL is defined as the difference (in LSB) between the ideal (1 LSB) and measured code tran-
sitions for successive codes. INL and DNL are specified after gain and offset errors have been
removed.
oversampling per conversion = 16
oversampling per conversion = 64
oversampling per conversion = 64
oversampling per conversion = 8
1 conversion (no offset rejection)
1 conversion (no offset rejection)
1 conversion (no offset rejection)
1 conversion (no offset rejection)
NO GAIN (ONLY ADC), 12 bit ADC setting
2 conversions (offset rejection)
2 conversions (offset rejection)
8 conversion s(offset rejection)
f
N sweep = 1201; average on 4 samples
RC
= 2MHz; IB_AMP(1:0) = 11; Vinn=0V
1000
V
IN
conditions
[mV]
1500
2000
2500
input frequency
512 kHz
512 kHz
512 kHz
512 kHz
512 kHz
512 kHz
512 kHz
-0.10
-0.20
-0.30
0.50
0.40
0.30
0.20
0.10
0.00
conversion
0
12 bits - ADC converter (No PGA; ADC only) (version v5a)
16.5 ms
150 us
275 us
500 us
40 us
50 us
1 ms
Vbat = Vref = 5.0V; fs = 500kHz; OSR = 32; NELCONV = 4
500
time output frequency
f
N sweep = 1201; average on 4 samples
RC
= 2MHz; IB_AMP(1:0) = 11; Vinn=0V
1000
V
6.7 kHz
3.6 kHz
IN
25 kHz
20 kHz
2 kHz
1 kHz
60 Hz
[mV]
1500
2000
D0109-40
2500