Preliminary Technical Data
ADuC7036
Parameter
Total Gain Error1, 3, 7, 10, 15
Test Conditions/Comments
Min
Typ
0.06
0.03
3
60
Max
Unit
Includes resistor mismatch
Temperature range = −25°C to +65°C
Includes resistor mismatch drift
4 Hz update rate, chop enabled
10 Hz update rate, chop enabled
1 kHz update rate
1 kHz update rate, chop enabled
1 kHz update rate (ADCFLT = 0x0101)
8 kHz update rate
−0.25
−0.15
+0.25
+0.15
%
%
Total Gain Error1, 3, 7, 10, 15
Gain Drift
Output Noise1, 12, 16
ppm/°C
µV rms
µV rms
µV rms
µV rms
µV rms
µV rms
90
90
270
307
405
2400
60
180
240
270
1600
Temperature Channel
No Missing Codes1
Integral Nonlinearity1
Offset Error3, 4, 5, 17
Valid at all ADC update rates
16
Bits
ppm of FSR
LSB
10
3
60
+10
Chop off, 1 LSB = 19.84 μV (in unipolar mode),
tested at gain of 4
Chop on
Chop off
−10
−5
Offset Error1, 3
Offset Error Drift
Total Gain Error1, 3, 15
Gain Drift
+1
+5
LSB
LSB/°C
%
ppm/°C
µV rms
0.03
0.06
3
−0.2
+0.2
11.25
Output Noise1
1 kHz update rate
7.5
ADC SPECIFICATIONS ANALOG INPUT Internal VREF = 1.2 V
Current Channel
Absolute Input Voltage Range
Input Voltage Range18, 19
Applies to both IIN+ and IIN−
−200
+300
mV
V
Gain = 120
Gain = 220
Gain = 420
Gain = 8
Gain = 16
Gain = 32
Gain = 64
Gain = 128
Gain = 256
Gain = 512
1.2
600
300
150
75
37.5
18.75
9.375
4.68
2.3
mV
mV
mV
mV
mV
mV
mV
mV
mV
nA
Input Leakage Current1
Input Offset Current1, 21
Voltage Channel
−3
+3
1.5
0.5
nA
Absolute Input Voltage Range
Input Voltage Range
VBAT Input Current
4
18
V
V
µA
0 to 28.8
5.5
VBAT = 18 V
3
8
Temperature Channel
Absolute Input Voltage Range
Input Voltage Range
VTEMP Input Current1
VOLTAGE REFERENCE
ADC Precision Reference
Internal VREF
VREF = (REG_AVDD, GND_SW)/2
100
1300
100
mV
V
nA
0 to VREF
2.5
1.2
0.5
V
ms
%
Power-Up Time1
Initial Accuracy1
Measured at TA = 25°C
−0.15
−20
+0.15
+20
Temperature Coefficient1, 22
Reference Long-Term Stability23
External Reference Input Range24
VREF Divide-by-2 Initial Error1
ADC Low Power Reference
Internal VREF
5
100
ppm/°C
ppm/1000 hr
V
%
0.1
1.3
0.3
0.1
1.2
V
Rev. Pr.A | Page 5 of 140