General Description
The MAX11201 is an ultra-low-power (< 320FA max active current), high-resolution, serial-output ADC. This device provides the highest resolution per unit power in the industry and is optimized for applications that require very high dynamic range with low power such as sensors on a 4mA to 20mA industrial control loop. The MAX11201 provides a high-accuracy internal oscillator that requires no external components.

Features
♦ 23.3-Bit ENOB
    20.6-Bit Noise-Free Resolution at 13.75sps
    19.1-Bit Noise-Free Resolution at 120sps
♦ 700nVRMS Noise ±3.6VFS Input (MAX11201B)
♦ INL: 3ppm (typ), 10ppm (max)
♦ No Missing Codes
♦ Ultra-Low Power Dissipation
    Operating Mode Current Drain < 320µA (max)
    Sleep Mode Current Drain < 0.4µA
♦ 2.7V to 3.6V Analog Supply Voltage Range
♦ 1.7V to 3.6V Digital and I/O Supply Voltage Range
♦ Fully Differential Signal and Reference Inputs
♦ High-Impedance Inputs
    Buffers on Signal Inputs
♦ Programmable Internal System Clock or External Clock
    2.4576MHz (MAX11201A)
    2.25275MHz (MAX11201B)
♦ > 100dB (min) 50Hz/60Hz Rejection (MAX11201B)
♦ Serial 2-Wire Interface (Clock Input and Data Output)
♦ On-Demand Offset and Gain Self-Calibration
♦ -40°C to +85°C Operating Temperature Range
♦ ±2kV ESD Protection
♦ Lead(Pb)-Free and RoHS-Compliant µMAX Package

Applications
    Sensor Measurement (Temperature and Pressure)
    Portable Instrumentation
    Battery Applications
    Weigh Scales