Datasheet

ADuC7060/ADuC7061 Data Sheet
Rev. D | Page 6 of 108
Parameter Test Conditions/Comments Min Typ Max Unit
ADC SPECIFICATIONS: ANALOG
INPUT
Internal V
REF
= 1.2 V
Main Channel
Absolute Input Voltage Range Applies to both VIN+ and VIN− 0.1 V
DD
− 0.7 V
Input Voltage Range Gain = 1
1
0 1.2 V
(Differential Voltage
Between AIN+ and AIN–)
Gain = 2
1
0 600 mV
Gain = 4
1
0 300 mV
Gain = 8
1
0 150 mV
Gain = 16
1
0 75 mV
Gain = 32
1
0 37.5 mV
Gain = 64
1
0 18.75 mV
Gain = 128
1
0 9.375 mV
Common Mode Voltage, V
CM
10
V
CM
= (AIN(+) + AIN(−))/2,
gain = 4 to 128
0.5 V
Input Leakage Current
1
ADC0 and ADC1 10 18
1
nA
ADC2, ADC3, ADC4, and ADC5 15 30
1
nA
ADC6, ADC7, ADC8, and ADC9,
VREF+, VREF−
15 25
1
nA
Common-Mode Rejection DC
1
On ADC Input ADC = 7.8 mV 113 dB
ADC = 1 V
1
95 dB
Common-Mode Rejection
50 Hz/60 Hz
1
50 Hz/60 Hz ± 1 Hz, 16.6 Hz and
50 Hz update rate, chop on
ADC = 7.8 mV, range ± 20 mV 95 dB
ADC = 1 V, range ± 1.2 V 90 dB
Normal-Mode Rejection
50 Hz/60 Hz
1
On ADC Input 50 Hz/60 Hz ± 1 Hz, 16.6 Hz f
ADC
,
chop on
75 dB
50 Hz/60 Hz ± 1 Hz, 16.6 Hz f
ADC
,
chop off
67 dB
Auxiliary Channel
Absolute Input Voltage
Range
1
Buffer enabled 0.1 AVDD − 0.1 V
Buffer disabled AGND AVDD V
Input Voltage Range Range-based reference source 0 1.2 V
Common-Mode Rejection DC
1
On ADC Input ADC = 1 V
1
87 dB
Common-Mode Rejection
50 Hz/60 Hz
1
50 Hz/60 Hz ± 1 Hz, 16.6 Hz and
50 Hz update rate, chop on
ADC = 1 V, range ± 1.2 V 90 dB
Normal-Mode Rejection
50 Hz/60 Hz
1
On ADC Input 50 Hz/60 Hz ± 1 Hz, 16.6 Hz f
ADC
,
chop on
75 dB
50 Hz/60 Hz ± 1 Hz, 16.6 Hz f
ADC
,
chop off
67 dB
VOLTAGE REFERENCE
ADC Precision Reference
Internal V
REF
1.2 V
Initial Accuracy Measured at T
A
= 25°C −0.1 +0.1 %
Reference Temperature
Coefficient (Tempco)
1, 11
−20 ±10 +20 ppm/°C
Power Supply Rejection
1
70 dB