MAX11212_12 Datasheet, PDF (5/14 Pages) Maxim Integrated Products – 18-Bit, Single-Channel, Ultra-Low Power, Delta-Sigma ADC with 2-Wire Serial Interface

MAX11212
18-Bit, Single-Channel, Ultra-Low Power, Delta-
Sigma ADC with 2-Wire Serial Interface
Typical Operating Characteristics
(VAVDD = 3.6V, VDVDD = 1.8V, VREFP - VREFN = VAVDD; internal clock; TA = TMIN to TMAX, unless otherwise noted. Typical values
are at TA = +25NC.)
ANALOG ACTIVE CURRENT
vs. AVDD VOLTAGE (MAX11212A)
240
VDVDD = 1.8V
220
TA = +85°C
200
180
TA = +25°C
160
TA = -45°C
140
120
100
2.70 2.85 3.00 3.15 3.30 3.45 3.60
AVDD VOLTAGE (V)
ACTIVE SUPPLY CURRENT
vs. TEMPERATURE (MAX11212A)
300
250
TOTAL
200
V_AVDD = 3.6V
150
100
VDVDD = 1.8V
50
0
-45 -25 -5 15 35 55 75 95
TEMPERATURE (°C)
DIGITAL ACTIVE CURRENT
vs. DVDD VOLTAGE
130
V_AVDD = 3.6V
120 _{TA = +85°C, +25°C, -45°C}
110
100
MAX11212A
90
80
70
MAX11212B
60
50
40
1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
DVDD VOLTAGE (V)
ANALOG ACTIVE CURRENT
vs. AVDD VOLTAGE (MAX11212B)
240
VDVDD = 1.8V
220
TA = +85°C
200
180
TA = +25°C
160
TA = -45°C
140
120
100
2.70 2.85 3.00 3.15 3.30 3.45 3.60
AVDD VOLTAGE (V)
ACTIVE SUPPLY CURRENT
vs. TEMPERATURE (MAX11212B)
300
250
TOTAL
200
VAVDD = 3.6V
150
100
VDVDD = 1.8V
50
0
-45 -25 -5 15 35 55 75 95
TEMPERATURE (°C)
DIGITAL SLEEP CURRENT vs. DVDD
VOLTAGE (MAX11212A/MAX11212B)
3.0
VAVDD = 3.6V
2.5
TA = -45°C
2.0
TA = +25°C
1.5
1.0
TA = +85°C
0.5
0
1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5
DVDD VOLTAGE (V)
ANALOG SLEEP CURRENT vs. AVDD
VOLTAGE (MAX11212A/MAX11212B)
1.0
VDVDD = 1.8V
0.8
0.6
0.4
TA = -45°C
0.2
TA = +85°C
TA = +25°C
0
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
AVDD VOLTAGE (V)
SLEEP CURRENT vs. TEMPERATURE
(MAX11212A/MAX11212B)
1.0
VAVDD = 3.6V
VDVDD = 1.8V
0.8
0.6
0.4
0.2
VAVDD
VDVDD TOTAL
0
-45 -25 -5 15 35 55 75 95
TEMPERATURE (°C)
INTERNAL OSCILLATOR FREQUENCY
vs. TEMPERATURE
2.6
VDVDD = 1.8V
2.5 ^{VAVDD = 3.0V}
MAX11212A
2.4
2.3
MAX11212B
2.2
2.1
2.0
-45 -25 -5 15 35 55 75 95
TEMPERATURE (°C)
Maxim Integrated
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