SMM465
Preliminary Information
DC OPERATING CHARACTERISTICS (CONTINUED)
(Over recommended operating conditions, unless otherwise noted. All voltages are relative to GND.)
AIN1/AIN2 ADC characteristics
Symbol
N
MC
S/N
DNL
INL
GAIN
Offset
ADC_TC
IM
ADC
II
VREF_ADC
IC
VREF_ADC
IR
VREF_ADC
Parameter
Resolution
Missing Codes
Signal-to-Noise Ratio
Differential Non-Linearity
Integral Non-Linearity
Positive full scale gain error
Offset Error
Full Scale Temperature
Coefficient
Analog ADC Input Impedance
V
REF_ADC
Input Current
V
REF_ADC
Input Capacitance
V
REF_ADC
Input Impedance
Minimum resolution for which no
missing codes are guaranteed
Notes
Min
10
10
Typ
Max
Unit
Bits
Bits
Conversion rate = 500Hz
Note 1
Note 1
Note 1
-1/2
-1
-0.5
-1
72
+1/2
+1
+0.5
+1
±15
10
250
200
1
db
LSB
LSB
%
LSB
PPM/
o
C
MΩ
nA
pF
kΩ
Note 1 - The formula for the total ADC inaccuracy is:
[((ADC read voltage) +/- INL)*(range of gain error)]+range of offset error
Summit Microelectronics, Inc
2085 1.1 05/27/04
9
SUMMIT [ SUMMIT MICROELECTRONICS, INC. ]
