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ADUC7033 Datasheet PDF : 140 Pages
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ADuC7033
SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
VDD = 3.5 V to 18 V, VREF = 1.2 V internal reference, fCORE = 10.24 MHz driven from external 32.768 kHz watch crystal or on-chip
precision oscillator, all specifications TA = −40°C to +115°C, unless otherwise noted.
Table 1. ADuC7033 Electrical Specifications
Parameter
Test Conditions/Comments
Min
ADC SPECIFICATIONS
Conversion Rate1
Chop off, ADC normal operating mode
4
Chop on, ADC normal operating mode
4
Chop on, ADC low power mode
1
Current Channel
No Missing Codes1
Valid for all ADC update rates and ADC modes
16
Integral Nonlinearity1, 2
Offset Error2, 3, 4, 5
Chop off, 1 LSB = (36.6/gain) μV
−10
Offset Error1, 3, 6
Chop on
−2
Offset Error1, 3
Chop on, low power or low power plus mode,
0
MCU powered down
Offset Error1, 3
Chop on, normal mode, CD = 1
0
Offset Error Drift6
Chop off, valid for ADC gains of 4 to 64, normal mode
Chop off, valid for ADC gains of 128 to 512,
normal mode
Chop on
Total Gain Error1, 3, 7, 8, 9
Normal mode
−0.5
Total Gain Error1, 3, 7, 9
Low power mode, using ADCREF MMR
−4
Total Gain Error1, 3, 7, 9
Low power plus mode, using precision VREF
−1
Gain Drift
PGA Gain Mismatch Error
Output Noise1, 10, 11
4 Hz update rate, gain = 512, chop enabled
4 Hz update rate, gain = 512, chop disabled
10 Hz update rate, gain = 512, chop enabled
10 Hz update rate, gain = 512, chop disabled
1 kHz update rate, gain ≥ 64, chop enabled
1 kHz update rate, gain ≥ 64, chop disabled
1 kHz update rate, gain = 512
1 kHz update rate, gain = 32
1 kHz update rate, gain = 8, chop enabled
1 kHz update rate, gain = 8, chop disabled
1 kHz update rate, gain = 8 (ADCFLT = 0x0101)
1 kHz update rate, gain = 4
8 kHz update rate, gain = 32
8 kHz update rate, gain = 4
ADC low power mode, fADC = 10 Hz, gain = 128
ADC low power mode, fADC = 1 Hz, gain = 128
Voltage Channel12
ADC low power plus mode, fADC = 1 Hz, gain = 512
No Missing Codes1
Valid at all ADC update rates
16
Integral Nonlinearity1
Offset Error3, 5
Chop off, 1 LSB = 439.5 μV
−10
Offset Error1, 3
Chop on
−1
Offset Error Drift
Chop off
Typ
Max
8000
2600
650
±10
±3
±0.5
−200
−1.5
±0.03
±30
±10
±0.1
±0.2
±0.2
±3
±0.1
60
75
100
120
0.8
1
0.6
0.8
2.1
1.6
2.6
2.0
2.5
14
1.25
0.35
0.1
±60
+10
+2
−650
−5
+0.5
+4
+1
90
115
150
180
1.2
1.5
0.9
1.2
4.1
2.4
3.9
2.8
3.5
21
1.9
0.5
0.15
±10
±60
±1
+10
±0.3
+1
±0.03
Unit
Hz
Hz
Hz
Bits
ppm of FSR
LSB
μV
nV
μV
LSB/°C
nV/°C
nV/°C
%
%
%
ppm/°C
%
nV rms
nV rms
nV rms
nV rms
μV rms
μV rms
μV rms
μV rms
μV rms
μV rms
μV rms
μV rms
μV rms
μV rms
μV rms
μV rms
μV rms
Bits
ppm of FSR
LSB
LSB
LSB/°C
Rev. B | Page 4 of 140
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