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MAX1415 Dataheets PDF



Part Number MAX1415
Manufacturers Maxim
Logo Maxim
Description 16-Bit / Low-Power / 2-Channel / Sigma-Delta ADCs
Datasheet MAX1415 DatasheetMAX1415 Datasheet (PDF)

MAX1415/MAX1416 EVALUATION KIT AVAILABLE 16-Bit, Low-Power, 2-Channel, Sigma-Delta ADCs General Description The MAX1415/MAX1416 low-power, 2-channel, serialoutput analog-to-digital converters (ADCs) use a sigmadelta modulator with a digital filter to achieve 16-bit resolution with no missing codes. These ADCs are pin-compatible upgrades to the MX7705/AD7705. The MAX1415/MAX1416 feature an internal oscillator (1MHz or 2.4576MHz), an on-chip input buffer, and a programmable gain amplifier (PGA)..

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MAX1415/MAX1416 EVALUATION KIT AVAILABLE 16-Bit, Low-Power, 2-Channel, Sigma-Delta ADCs General Description The MAX1415/MAX1416 low-power, 2-channel, serialoutput analog-to-digital converters (ADCs) use a sigmadelta modulator with a digital filter to achieve 16-bit resolution with no missing codes. These ADCs are pin-compatible upgrades to the MX7705/AD7705. The MAX1415/MAX1416 feature an internal oscillator (1MHz or 2.4576MHz), an on-chip input buffer, and a programmable gain amplifier (PGA). The devices offer an SPI-/ QSPI™-/MICROWIRE®-compatible serial interface. The MAX1415/MAX1416 are available in 16-pin PDIP, SO, and TSSOP packages. Applications ●● Industrial Instruments ●● Weigh Scales ●● Strain-Gauge Measurements ●● Loop-Powered Systems ●● Flow and Gas Meters ●● Medical Instrumentation ●● Pressure Transducers ●● Thermocouple Measurements ●● RTD Measurements Ordering Information continued at end of data sheet. Functional Diagram Benefits and Features ●● Improve Measurement Quality with Excellent DC Accuracy • 16-Bit Sigma-Delta ADC with Two Fully-Differential Input Channels • 0.0015% INL (max) with No Missing Codes ●● Minimize Power Consumption with Low-Power Dissipation • 1.2mW (max) 3V supply • 2μA (typ) Power-Down Current ●● Lower System Cost with Integrated Functionality • PGA with 1 to 128 Programmable Gain • Optional Input Buffers • > 98dB 50Hz/60Hz Rejection ●● Increase System Accuracy with Built-in Self Calibration • On-Demand Offset and Gain Self-Calibration and System Calibration • User-Programmable Offset and Gain Registers ●● Flexible Single-Supply Options • 2.7V to 3.6V (MAX1415) • 4.75V to 5.25V (MAX1416) ●● Pin Compatible Upgrades for MX7705/AD7705 AIN1+ AIN1AIN2+ AIN2- REF+ REF- BUFFER MAX1415 MAX1416 CLOCK GENERATOR MUX S1 S2 2nd-ORDER PGA SIGMA-DELTA MODULATOR DIGITAL FILTER BUFFER S1 AND S2 ARE OPEN IN BUFFERED MODE AND CLOSED IN UNBUFFERED MODE SERIAL INTERFACE, REGISTERS, AND CONTROL QSPI is a trademark of Motorola, Inc. MICROWIRE is a registered trademark of National Semiconductor Corp. CLKIN CLKOUT VDD GND CS SCLK DIN DOUT DRDY RESET 19-3163; Rev 3; 6/15 MAX1415/MAX1416 16-Bit, Low-Power, 2-Channel, Sigma-Delta ADCs Absolute Maximum Ratings VDD to GND.............................................................-0.3V to +6V All Other Pins to GND............................... -0.3V to (VDD + 0.3V) Maximum Current Input into Any Pin..................................50mA Continuous Power Dissipation (TA = +70°C) 16-Pin PDIP (derate 10.5mW/°C above +70°C)..........842mW 16-Pin TSSOP (derate 9.4mW/°C above +70°C).........755mW 16-Pin Wide SO (derate 9.5mW/°C above +70°C)......762mW Operating Temperature Range............................ -40°C to +85°C Storage Temperature Range............................. -60°C to +150°C Junction Temperature.......................................................+150°C Lead Temperature (soldering, 10s).................................. +300°C Soldering Temperature (reflow)........................................+260°C 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—MAX1415 (VDD = 3V, VGND = 0V, VREF+ = 1.225V, VREF- = GND, external fCLKIN = 2.4576MHz, CLKDIV bit = 0, CREF+ to GND = 0.1μF, CREFto GND = 0.1μF, TA = TMIN to TMAX, unless otherwise noted.) PARAMETER DC ACCURACY Resolution (No Missing Codes) Output Noise Integral Nonlinearity Unipolar Offset Error Unipolar Offset Drift Bipolar Zero Error Bipolar Zero Drift (Note 2) Positive Full-Scale Error Full-Scale Drift Gain Error SYMBOL CONDITIONS INL Gain = 1, bipolar mode, unbuffered After calibration (Note 2) After calibration Gain = 1 to 4 Gain = 8 to 128 After calibration (Notes 2, 4) After calibration Gain Drift (Notes 2, 6) Bipolar Negative Full-Scale Error After calibration Bipolar Negative Full-Scale Drift (Note 2) Gain = 1 to 4 Gain = 8 to 128 ANALOG INPUTS (AIN1+, AIN1-, AIN2+, AIN2-) AIN Differential Input Voltage Range (Note 7) Unipolar input range Bipolar input range AIN Absolute Input Voltage Range (Note 8) AIN DC Leakage Current Unbuffered Buffered Unselected input channel MIN TYP MAX UNITS 16 (Tables 1, 3) ±0.0015 (Note 1) 0.5 (Note 1) 0.5 0.1 (Notes 1, 3) 0.5 (Notes 1, 5) 0.5 ±0.003 1 0.6 Bits µV %FSR µV µV/°C µV µV/°C µV µV/°C µV ppm of FSR/°C %FSR µV/°C 0 -VREF / GAIN GND 30mV GND + 50mV VREF / GAIN VREF / GAIN VDD + 30mV VDD 1.5V 1 V V nA www.maximintegrated.com Maxim Integrated │  2 MAX1415/MAX1416 16-Bit, Low-Power, 2-Channel, Sigma-Delta ADCs Electrical Characteristics—MAX1415 (continued) (VDD = 3V, VGND = 0V, VREF+ = 1.225V, VREF- = GND, external.


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