MAX11212 Datasheet, PDF (2/14 Pages) Maxim Integrated Products – 18-Bit, Single-Channel, Ultra-Low Power, Delta-Sigma ADC with 2-Wire Serial Interface

18-Bit, Single-Channel, Ultra-Low Power, Delta-
Sigma ADC with 2-Wire Serial Interface
ABSOLUTE MAXIMUM RATINGS
Any Pin to GND.....................................................-0.3V to +3.9V
AVDD to GND.......................................................-0.3V to +3.9V
DVDD to GND.......................................................-0.3V to +3.9V
Analog Inputs (AINP, AINN, REFP, REFN)
to GND ............................................. -0.3V to (V_AVDD + 0.3V)
Digital Inputs and Digital Outputs
to GND ............................................. -0.3V to (V_DVDD + 0.3V)
ESD_HB (AVDD, AINP, AINN, REFP, REFN, DVDD, CLK, SCLK,
RDY/DOUT, GND) ............................................ Q2kV (Note 1)
Continuous Power Dissipation (T_A = +70NC)
10-Pin FMAX (derate 5.6mW/NC above +70NC)...........444mW
Operating Temperature Range........................... -40NC to +85NC
Junction Temperature......................................................+150NC
Storage Temperature Range............................ -55NC to +150NC
Lead Temperature (soldering, 10s).................................+300NC
Soldering Temperature (reflow).......................................+260NC
Note 1: Human Body Model to specification MIL-STD-883 Method 3015.7.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VAVDD = +3.6V, VDVDD = +1.8V, VREFP - VREFN = VAVDD; internal clock, TA = TMIN to TMAX, unless otherwise noted. Typical values
are at T_A = +25NC under normal conditions, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
ADC PERFORMANCE
Noise-Free Resolution
NFR (Notes 2, 3)
18
Bits
Thermal Noise (Notes 2, 3)
MAX11212A
VN
MAX11212B
2.1
0.72
FV_RMS
Integral Nonlinearity
INL (Note 4)
-10
+10 ppmFSR
Zero Error
Zero Drift
VOFF After calibration, VREFP - VREFN = 2.5V -20
1
+20 ppmFSR
50
nV/NC
Full-Scale Error
After calibration, VREFP - VREFN = 2.5V
(Note 5)
-35
3
+35 ppmFSR
Full-Scale Error Drift
0.05
ppmFSR/NC
Power-Supply Rejection
AVDD DC rejection
DVDD DC rejection
70
80
dB
90
100
ANALOG INPUTS/REFERENCE INPUTS
DC rejection
90
123
Common-Mode Rejection
CMR 50Hz/60Hz rejection MAX11212A
90
dB
50Hz/60Hz rejection MAX11212B
144
Normal-Mode 50Hz Rejection
Normal-Mode 60Hz Rejection
Common-Mode Voltage Range
NMR50 MAX11212B (Note 6)
NMR60 MAX11212B (Note 6)
65
80.5
dB
73
87
dB
GND
VAVDD
V
Absolute Input Voltage
Low input voltage
High input voltage
GND -
30mV
V
V_AVDD +
30mV
DC Input Leakage
Sleep mode (Note 2)
±1
FA
AIN Dynamic Input Current
5
FA
REF Dynamic Input Current
7.5
FA
AIN Input Capacitance
10
pF
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