MAX1463 Datasheet, PDF (9/49 Pages) Maxim Integrated Products – Low-Power Two-Channel Sensor Signal Processor

Low-Power Two-Channel Sensor
Signal Processor
(V_DD = 5.0V, T_A = +25°C, unless otherwise noted.)
Typical Operating Characteristics
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
2.65
2.60
2.55
2.50
T_A = +125°C
2.45
2.40 ^{TA = +25°C}
2.35
2.30
2.25
4.5
T_A = -40°C
4.7 4.9
CPU ON 2% OF TIME
ADC ON 98% OF TIME
ADC_CLK = 1MHz
DAC1 ON
SMALL OP AMP ON
5.1 5.3 5.5
SUPPLY VOLTAGE, V_DD (V)
SUPPLY CURRENT
vs. EXTERNAL CLOCK FREQUENCY
2.50
2.45
2.40
2.35
2.30
2.25
2.20
2.15
2.10
2.05
2.00
3.0
CPU ON 2% OF TIME
ADC ON 98% OF TIME
ADC_CLK = 1MHz
DAC1 ON
SMALL OP AMP ON
3.5
4.0
4.5
5.0
EXTERNAL CLOCK FREQUENCY (MHz)
MODULE CURRENT
vs. TEMPERATURE
2.5
2.3
2.1
DAC + LARGE OP AMP
1.9
1.7
ADC
1.5
1.3 ^{DAC + SMALL OP AMP}
1.1
0.9
BASE
0.7
0.5
-40 -13 15 43 70 98 125
TEMPERATURE (°C)
0.81
0.79
0.77
0.75
0.73
0.71
0.69
0.67
0.65
4.5
BASE OPERATING CURRENT
vs. SUPPLY VOLTAGE
T_A = -40°C
T_A = +25°C
T_A = +125°C
4.7 4.9 5.1 5.3 5.5
SUPPLY VOLTAGE, V_DD (V)
ADC OUTPUT ERROR
vs. SUPPLY VOLTAGE
0.04
0.03
ADC INPUT = 0.75 x V_DD
0.02
ADC INPUT = 0.5 x V_DD
0.01
ADC INPUT = 0
0
-0.01
-0.02
-0.03
-0.04
4.5
ADC INPUT = -0.5 x V_DD
ADC INPUT = -0.75 x V_DD
ADC_REF = V_DD
PGA[4:0] = 00000
4.7 4.9 5.1 5.3 5.5
SUPPLY VOLTAGE, V_DD (V)
ADC INL
0.006
0.004
0.002
0
-0.002
-0.004
-0.006
-1.0
-0.5
PGA[4:0] = 01000
0
0.5
1.0
INPUT VOLTAGE NORMALIZED TO FULL SCALE
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