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MAX11205：16-Bit, Single-Channel, Ultra-Low Power, Delta-Sigma ADC with 2-Wire Serial Interface

Pin-Compatible Version of 24-/20-/18-Bit Family

The MAX11205 is an ultra-low-power (< 300µA 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 MAX11205 provides a high-accuracy internal oscillator that requires no external components. When used with the specified data rates, the internal digital filter provides more than 80dB rejection of 50Hz or 60Hz line noise. The MAX11205 provides a simple 2-wire serial interface in the space-saving, 10-pin µMAX® package. The MAX11205 operates over the -40°C to +85°C temperature range.

Key Features 16-Bit Full-Scale Resolution 720nVRMS Noise (MAX11205B) 3ppm INL No Missing Codes Ultra-Low Power Dissipation Operating Mode Current Drain < 300µA (max) Sleep Mode Current Drain < 0.1µA 2.7V to 3.6V Analog Supply Voltage Range 1.7V to 3.6V Digital and I/O Supply Voltage Range Fully Differential Signal Inputs Fully Differential Reference Inputs Internal System Clock 2.4576MHz (MAX11205A) 2.2528MHz (MAX11205B) External Clock 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

MAX11205: Functional Diagram Applications/Uses Battery Applications Portable Instrumentation Sensor Measurement (Temperature and Pressure) Weigh Scales

DataSheet

Parametrics

Design kits & evaluation modules

• MAX11205PMB1
• MAXPMBAE

Quality and Environmental Data

• MAX11205.pdf

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