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

Experience the Industry's Highest ENOB ADC at < 1mW

Product Details

The MAX11201 is an ultra-low-power (< 320µA 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.

When used with the specified data rates, the internal digital filter provides more than 100dB rejection of 50Hz or 60Hz line noise. The MAX11201 provides a simple 2-wire serial interface in the space-saving, 10-pin µMAX® package.

The MAX11201 operates over the -40°C to +85°C temperature range.

Key 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/Uses

  • Battery Applications
  • Portable Instrumentation
  • Sensor Measurement (Temperature and Pressure)
  • Weigh Scales
Parametric specs for Precision ADCs (&le; 5Msps)
Resolution (bits) (ADC) 24
# Input Channels 1
Conv. Rate (ksps) (max) 0.12
Data Bus SPI
ADC Architecture Sigma-Delta
Diff/S.E. Input Both
External VREF (V) (min) 0
External VREF (V) (max) 3.6
Unipolar VIN (V) (max) 3.6
Bipolar VIN (±V) (max) 3.6
INL (±LSB) 10
Package/Pins UMAX/10
Budgetary
Price (See Notes)
$2.74 @1k
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Simplified Block Diagram

MAX11201: Functional Diagram MAX11201: Functional Diagram Zoom icon

Technical Docs

Design & Development

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Parameters

Parametric specs for Precision ADCs (&le; 5Msps)
Resolution (bits) (ADC) 24
# Input Channels 1
Conv. Rate (ksps) (max) 0.12
Data Bus SPI
ADC Architecture Sigma-Delta
Diff/S.E. Input Both
External VREF (V) (min) 0
External VREF (V) (max) 3.6
Unipolar VIN (V) (max) 3.6
Bipolar VIN (±V) (max) 3.6
INL (±LSB) 10
Package/Pins UMAX/10
Budgetary
Price (See Notes)
$2.74 @1k

Key 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/Uses

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

Description

The MAX11201 is an ultra-low-power (< 320µA 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.

When used with the specified data rates, the internal digital filter provides more than 100dB rejection of 50Hz or 60Hz line noise. The MAX11201 provides a simple 2-wire serial interface in the space-saving, 10-pin µMAX® package.

The MAX11201 operates over the -40°C to +85°C temperature range.

Simplified Block Diagram

MAX11201: Functional Diagram MAX11201: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.