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MAX1491CAI Datasheet(PDF) 2 Page - Maxim Integrated Products |
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MAX1491CAI Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 25 page 3.5- and 4.5-Digit, Single-Chip ADCs with LCD Drivers 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS (AVDD = DVDD = +2.7V to +5.25V, GND = 0, VREF+ - VREF- = 2.048V (external reference), CNEG= 0.1µF. All specifications are TMIN to TMAX, unless otherwise noted. Typical values are at +25°C, unless otherwise noted.) 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. AVDD to GND............................................................-0.3V to +6V DVDD to GND ...........................................................-0.3V to +6V AIN+, AIN- to GND ...............................VNEG to + (AVDD + 0.3V) REF+, REF- to GND..............................VNEG to + (AVDD + 0.3V) LOWBATT to GND ...................................-0.3V to (AVDD + 0.3V) INTREF, RANGE, DPSET1, DPSET2, PEAK, HOLD to GND ......................................-0.3V to (DVDD + 0.3V) DPON to GND..........................................-0.3V to (DVDD + 0.3V) VNEG to GND ...........................................-2.6V to (AVDD + 0.3V) Maximum Current into Any Pin ...........................................50mA Continuous Power Dissipation (TA = +70°C) 32-Pin TQFP (derate 20.7mW/°C above +70°C).....1652.9mW 28-Pin SSOP (derate 9.5mW/°C above +70°C) ...........762mW 28-Pin DIP (derate 14.3mW/°C above +70°C) ........1142.9mW Operating Temperature Range...............................0°C to +70°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-60°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC ACCURACY MAX1493/MAX1495 -19,999 +19,999 Noise-Free Resolution MAX1491 -1999 +1999 Count 2.000V range ±1 Integral Nonlinearity (Note 1) INL 200mV range ±1 Count Range Change Accuracy (VAIN+ - VAIN- = 0.100V) on 200mV range / (VAIN+ - VAIN- = 0.100V) on 2.0V range 10:1 Ratio Rollover Error VAIN+ - VAIN- = full scale, VAIN- - VAIN+ = full scale ±1.0 Count Output Noise 10 µVP-P Offset Error (Zero Input Reading) Offset VIN = 0 (Note 2) -0 +0 Reading Gain Error (Note 3) -0.5 +0.5 %FSR Offset Drift (Zero Reading Drift) VIN = 0 0.1 µV/ °C Gain Drift ±1 ppm/ °C INPUT CONVERSION RATE Conversion Rate 5Hz ANALOG INPUTS (AIN+, AIN-) (bypass to GND with 0.1µF or greater capacitors) RANGE = GND -2.0 +2.0 Differential (Note 4) RANGE = DVDD -0.2 +0.2 AIN Input Voltage Range Absolute GND referenced -2.2V +2.2V V Normal Mode 50Hz and 60Hz Rejection (Simultaneously) 50Hz and 60Hz ±2% 100 dB Common-Mode 50Hz and 60Hz Rejection (Simultaneously) CMR For 50Hz ±2% and 60Hz ±2%, RSOURCE < 10k Ω 150 dB Common-Mode Rejection CMR At DC 100 dB Input Leakage Current TA = +25 °C10 nA Input Capacitance 10 pF Dynamic Input Current (Note 5) -20 +20 nA |
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