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Calibrated, 12-Bit ADC with Track/Hold and Reference

Product Details

Key Features

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 1
Conv. Rate (ksps) (max) 17
Data Bus µP/12
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 5
External VREF (V) (min) 4.75
External VREF (V) (max) 5.25
Unipolar VIN (V) (max) 5
Package/Pins PDIP/24
SOIC (W)/24
Budgetary
Price (See Notes)
27.96
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Simplified Block Diagram

Technical Docs

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Sampling:
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Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 1
Conv. Rate (ksps) (max) 17
Data Bus µP/12
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 5
External VREF (V) (min) 4.75
External VREF (V) (max) 5.25
Unipolar VIN (V) (max) 5
Package/Pins PDIP/24
SOIC (W)/24
Budgetary
Price (See Notes)
27.96

Key Features

  • Continuous Transparent Calibration of Offset and Gain
  • True 12-Bit Performance without Adjustments
  • T/H Front End and Internal Reference
  • DC and Dynamically Specified
  • Zero Error Typically <100μV
  • Standard Microprocessor Interface
  • 24-Pin DIP and Wide SO Packages

Applications/Uses

  • Audio and Telecom Processing
  • Digital-Signal Processing
  • High-Accuracy Process Control
  • High-Speed Data Acquisition

Description

The MAX178 is a complete, calibrated 12-bit A/D converter (ADC) which includes a precision voltage reference, track-and-hold, and conversion clock. Internal calibration circuitry maintains true 12-bit performance over the full operating temperature range without external adjustments. In addition, each conversion includes an auto-zero cycle which reduces zero errors to typically below 100μV.

CHIP SELECT, READ, and WRITE inputs are included for easy microprocessor interfacing without additional logic. 2-byte, 12-bit conversion data is provided over an 8-bit three-state output bus. Either byte may be read first. Two converter busy flags facilitate polling of the converter's status.

The MAX178's analog input range is 0V to +5V when using a +5V reference. The MAX178A's internal reference accuracy is ±0.3%, while the MAX178B is intended for use with an external reference.

Simplified Block Diagram

MAX178: Pin Configuration MAX178: Pin Configuration 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.