Data Sheet ADuCM362/ADuCM363
Rev. 0 | Page 7 of 24
Parameter Test Conditions/Comments Min Typ Max Unit
Input Current
9
Buffered Mode
Gain > 1 (excluding AIN4, AIN5, AIN6,
and AIN7 pins)
1 nA
Gain > 1 (AIN4, AIN5, AIN6, and AIN7 pins) 2 nA
Unbuffered Mode Input current varies with input voltage 860 nA/V
Average Input Current Drift
1
Buffered Mode AIN1, AIN3, AIN5, AIN7, and AIN11 ±5 pA/°C
AIN0, AIN4, AIN9, and AIN10 ±9 pA/°C
AIN2, AIN6, and AIN8 ±15 pA/°C
Unbuffered Mode ±250 pA/V/°C
Common-Mode Rejection, DC
1
On ADC input
ADC gain = 1, AVDD < 2 V 65 100 dB
ADC gain = 1, AVDD > 2 V 80 100 dB
ADC gain = 2 to 128 80 dB
Common-Mode Rejection,
50 Hz/60 Hz
1
50 Hz/60 Hz ± 1 Hz; f
ADC
= 16.67 Hz,
chop on; f
ADC
= 50 Hz, chop off
ADC gain = 1 97 dB
ADC gain = 2 to 128 90 dB
Normal Mode Rejection, 50 Hz/60 Hz
1
On ADC input
50 Hz/60 Hz ± 1 Hz; f
ADC
= 16.67 Hz,
chop on; f
ADC
= 50 Hz, chop off
60 80 dB
TEMPERATURE SENSOR
1
After user calibration
Voltage Output at 25°C
Processor powered down or in standby
mode before measurement
82.1 mV
Voltage Temperature Coefficient (TC) 250 µV/°C
Accuracy 6 °C
GROUND SWITCH
On Resistance (R
ON
) 3.7 10 19 Ω
Allowable Current
1
20 kΩ resistor off, direct short to ground 20 mA
VOLTAGE REFERENCE ADC internal reference
Internal V
REF
1.2 V
Initial Accuracy Measured at T
A
= 25°C −0.1 +0.1 %
Reference Temperature Coefficient
(TC)
1, 10
−15 ±5 +15 ppm/°C
Power Supply Rejection
1
82 90 dB
EXTERNAL REFERENCE INPUTS
Input Range
Buffered Mode AGND + 0.1 AVDD − 0.1 V
Unbuffered Mode
Minimum differential voltage between
VREF+ and VREF− pins is 400 mV
0 AVDD V
Input Current
Buffered Mode −20 +10 +27 nA
Unbuffered Mode 500 nA/V
Normal Mode Rejection
1
80 dB
Common-Mode Rejection
1
85 100 dB
Reference Detect Levels
1
400 mV