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Low-Cost, 2-Channel, ±14-Bit Serial ADCs

Product Details

Key Features

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 14
# Input Channels 2
Conv. Rate (ksps) (max) 0.05
Data Bus SPI
ADC Architecture Sigma-Delta
Diff/S.E. Input Both
External VREF (V) (min) 0
External VREF (V) (max) 5.3
Unipolar VIN (V) (max) 1.8
Bipolar VIN (±V) (max) 5.3
INL (±LSB) 4.9
Package/Pins PDIP/16
SOIC (W)/16
SSOP/20
Budgetary
Price (See Notes)
8.93
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Simplified Block Diagram

Technical Docs

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Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.

Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 14
# Input Channels 2
Conv. Rate (ksps) (max) 0.05
Data Bus SPI
ADC Architecture Sigma-Delta
Diff/S.E. Input Both
External VREF (V) (min) 0
External VREF (V) (max) 5.3
Unipolar VIN (V) (max) 1.8
Bipolar VIN (±V) (max) 5.3
INL (±LSB) 4.9
Package/Pins PDIP/16
SOIC (W)/16
SSOP/20
Budgetary
Price (See Notes)
8.93

Key Features

  • Single +5V Supply (MAX111)
  • Two Differential Input Channels
  • 14-Bit Resolution Plus Sign and Overrange
  • 0.03% Linearity (MAX110)
    0.05% Linearity (MAX111)
  • Low Power Consumption:
    • 550µA (MAX110)
    • 640µA (MAX111)
    • 4µA Shutdown Current
  • Up to 50 Conversions/sec
  • 50Hz/60Hz Rejection
  • Auto-Calibration Mode
  • No External Components Required
  • 16-Pin DIP/SO, 20-Pin SSOP

Applications/Uses

  • Data Acquisition
  • Panel Meters
  • Process Control
  • Temperature Measurement
  • Weigh Scales

Description

The MAX110/MAX111 analog-to-digital converters (ADCs) use an internal auto-calibration technique to achieve 14-bit resolution plus overrange, with no external components. Operating supply current is only 550µA (MAX110) and reduces to 4µA in power-down mode, making these ADCs ideal for high-resolution battery-powered or remote-sensing applications. A fast serial interface simplifies signal routing and opto-isolation, saves microcontroller pins, and offers compatibility with SPI™, QSPI™, and MICROWIRE™. The MAX110 operates with ±5V supplies, and converts differential analog signals in the -3V to +3V range. The MAX111 operates with a single +5V supply and converts differential analog signals in the ±1.5V range, or single-ended signals in the 0V to +1.5V range.

Internal calibration allows for both offset and gain-error correction under microprocessor (µP) control. Both devices are available in space-saving 16-pin DIP and SO packages, as well as an even smaller 20-pin SSOP package.

Simplified Block Diagram

MAX110, MAX111: Typical Operating Circuit MAX110, MAX111: Typical Operating Circuit 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 .

Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.