at TA = 25°C, VAVDD = 5 V, VAVSS = 0 V, VDVDD = 3.3 V, VREF = 2.5 V, and fCLK = 7.3728 MHz (unless otherwise noted); typical ADC1 characteristics at data rate = 20 SPS and gain = 1; typical ADC2 characteristics at data rate = 10 SPS and gain = 1
![ADC1
Offset Voltage vs Temperature GUID-B4D536C4-A48E-4321-8034-71D53A846992-low.gif](/ods/images/SBAS661C/GUID-B4D536C4-A48E-4321-8034-71D53A846992-low.gif)
After offset calibration, shorted inputs |
Figure 7-4 ADC1
Offset Voltage vs Temperature
Figure 7-6 ADC1
Offset Voltage vs Temperature Distribution
Figure 7-8 ADC1
Offset Voltage vs Reference Voltage
Figure 7-10 ADC1
Gain vs Temperature Distribution
Figure 7-12 ADC1
Noise vs Temperature![ADC1
Noise vs Reference Voltage GUID-C1CE8403-074E-43C2-96D5-81D442D815C1-low.gif](/ods/images/SBAS661C/GUID-C1CE8403-074E-43C2-96D5-81D442D815C1-low.gif)
20
SPS, 400 SPS, 7200 SPS = sinc4, 38400 SPS =
sinc5 |
|
Figure 7-14 ADC1
Noise vs Reference Voltage![ADC1
Output Reading Distribution GUID-9401E753-83B4-4882-A8C6-3621415C2F28-low.gif](/ods/images/SBAS661C/GUID-9401E753-83B4-4882-A8C6-3621415C2F28-low.gif)
20
SPS, FIR filter, gain = 32, after offset calibration, 256 samples |
Figure 7-16 ADC1
Output Reading Distribution![ADC1
Output Reading Distribution GUID-D6D6A2C3-CEF8-4934-A972-B3D17BD978D2-low.gif](/ods/images/SBAS661C/GUID-D6D6A2C3-CEF8-4934-A972-B3D17BD978D2-low.gif)
7200
SPS, sinc4 filter, gain = 32, after offset
calibration, 8192
samples |
Figure 7-18 ADC1
Output Reading Distribution
Figure 7-20 ADC1
Output Spectrum
Figure 7-22 ADC1
INL vs Temperature
Figure 7-24 ADC1
INL vs Reference Voltage
Figure 7-26 ADC1
Absolute Input Current
Figure 7-28 ADC1
Absolute Input Current
Figure 7-30 ADC1
Differential Input Current
Figure 7-32 Voltage Reference Long-Term Drift![ADC1
Reference Input Current GUID-C680FE90-6CFB-43A7-AA4D-C775712B2E07-low.gif](/ods/images/SBAS661C/GUID-C680FE90-6CFB-43A7-AA4D-C775712B2E07-low.gif)
IREFP measured with VREFN =
VAVSS, IREFN measured with
VREFP = VAVDD |
Figure 7-34 ADC1
Reference Input Current
Figure 7-36 ADC1 PSRR vs Frequency
Figure 7-38 IDAC Error vs Compliance Voltage
Figure 7-40 IDAC Error vs Compliance Voltage
Figure 7-42 Temperature Sensor Voltage vs Temperature
Figure 7-44 Internal Oscillator Frequency vs Temperature
Figure 7-46 ADC1
Differential Over-range Alarm Threshold vs Temperature
Figure 7-48 ADC1
Absolute High Alarm Threshold vs Temperature![ADC2
Offset Voltage vs Temperature GUID-ADAF622E-E576-4856-A683-092C08E28EBF-low.gif](/ods/images/SBAS661C/GUID-ADAF622E-E576-4856-A683-092C08E28EBF-low.gif)
After offset calibration, shorted input |
Figure 7-50 ADC2
Offset Voltage vs Temperature
Figure 7-52 ADC2
Gain vs Temperature![ADC2
Output Reading Distribution GUID-C32CFA0B-7633-4FFE-811C-D36D14891DE1-low.gif](/ods/images/SBAS661C/GUID-C32CFA0B-7633-4FFE-811C-D36D14891DE1-low.gif)
Gain = 1, 10 SPS, after offset calibration, 128
samples |
Figure 7-54 ADC2
Output Reading Distribution
Figure 7-56 ADC2
INL vs VIN
Figure 7-58 ADC2
Noise vs Temperature
Figure 7-60 ADC2 Absolute Input Current
Figure 7-62 ADC2 Differential Input Current
Figure 7-64 ADC2 CMRR vs Frequency![ADC1
Offset Voltage vs Temperature GUID-E67C53C4-6331-4B60-8C6E-F65141C61D1D-low.gif](/ods/images/SBAS661C/GUID-E67C53C4-6331-4B60-8C6E-F65141C61D1D-low.gif)
Chop
mode on, after offset calibration, shorted
inputs |
Figure 7-5 ADC1
Offset Voltage vs Temperature![ADC1
Offset Voltage vs Temperature Distribution GUID-C0E63FD2-94E4-4C36-94C0-1CE9E4026A25-low.gif](/ods/images/SBAS661C/GUID-C0E63FD2-94E4-4C36-94C0-1CE9E4026A25-low.gif)
Chop
mode on, shorted inputs, 30 units |
Figure 7-7 ADC1
Offset Voltage vs Temperature Distribution
Figure 7-9 ADC1
Gain Error vs Temperature
Figure 7-11 ADC1
Gain Error vs Reference Voltage
Figure 7-13 ADC1
Noise vs Temperature![ADC1
Output Reading Distribution GUID-24A0637A-25F5-4DF2-9412-8915DCE61856-low.gif](/ods/images/SBAS661C/GUID-24A0637A-25F5-4DF2-9412-8915DCE61856-low.gif)
20
SPS, FIR filter, gain = 1, after offset calibration, 256 samples |
Figure 7-15 ADC1
Output Reading Distribution![ADC1
Output Reading Distribution GUID-AD220433-9425-4C2A-A61C-85A34E716AD0-low.gif](/ods/images/SBAS661C/GUID-AD220433-9425-4C2A-A61C-85A34E716AD0-low.gif)
7200
SPS, sinc4 filter, gain = 1, after offset
calibration, 8192
samples |
Figure 7-17 ADC1
Output Reading Distribution![ADC1
Output Spectrum GUID-D0AACFE2-46F8-4EDC-8F21-9D5027BE5BB9-low.gif](/ods/images/SBAS661C/GUID-D0AACFE2-46F8-4EDC-8F21-9D5027BE5BB9-low.gif)
20
SPS, gain = 1, 256 points |
|
Figure 7-19 ADC1
Output Spectrum
Figure 7-21 ADC1
INL vs VIN
Figure 7-23 ADC1
INL Distribution
Figure 7-25 ADC1
Differential Input Current
Figure 7-27 ADC1
Absolute Input Current
Figure 7-29 ADC1
Differential Input Current
Figure 7-31 Voltage Reference vs Temperature
Figure 7-33 Voltage Reference Start-Up Time
Figure 7-35 ADC1
CMRR vs Frequency
Figure 7-37 ADC1 CMRR, PSRR vs Temperature
Figure 7-39 IDAC Error vs Compliance Voltage
Figure 7-41 IDAC Current Error vs Compliance Voltage
Figure 7-43 Temperature Sensor Voltage Distribution
Figure 7-45 ADS1262 Active Current vs Temperature
Figure 7-47 ADC1
Absolute Low Alarm Threshold vs Temperature
Figure 7-49 TDAC
Error vs Temperature
Figure 7-51 ADC2
Offset Voltage vs Temperature Distribution
Figure 7-53 ADC2
Gain vs Temperature Distribution![ADC2
Output Reading Distribution GUID-1F25F34A-3117-4F62-9A85-9218191375D2-low.gif](/ods/images/SBAS661C/GUID-1F25F34A-3117-4F62-9A85-9218191375D2-low.gif)
Gain
= 128, 10 SPS, after offset calibration, 128
samples |
Figure 7-55 ADC2
Output Reading Distribution
Figure 7-57 ADC2
INL vs Temperature
Figure 7-59 ADC2 Noise vs Reference Voltage
Figure 7-61 ADC2 Absolute Input Current
Figure 7-63 ADC2 Differential Input Current![ADC2 Reference Input Current GUID-E7AC863F-925B-420B-A50B-073E8F366547-low.gif](/ods/images/SBAS661C/GUID-E7AC863F-925B-420B-A50B-073E8F366547-low.gif)
IREFP measured with VREFN = VAVSS, IREFN measured with VREFP = VAVDD |
Figure 7-65 ADC2 Reference Input Current