MAX178

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


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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.
MAX178: Pin Configuration MAX178: Pin Configuration Enlarge+

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
Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
External VREF
(V)
External VREF
(V)
Unipolar VIN
(V)
THD
(dB)
Package/PinsBudgetary
Price
ADCmaxnominalminmaxmaxSee Notes
MAX178 12117SARµP/12S.E. Only54.755.255-80
PDIP/24
SOIC (W)/24
$23.48 @1k
See All Precision ADCs (< 5Msps) (444)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Quality and Environmental Data

Request Reliability Report for: MAX178 
Lead-Free Package Tin (Sn) Whisker Reports

CAD Symbols and Footprints

  • MAX178ACNG+
  • MAX178AENG+
  • MAX178AEWG+
  • MAX178AEWG+T
  • MAX178BCNG+
  • MAX178BEWG+
  • MAX178BEWG+T
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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    Related Resources


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    05/29/2020 - 05/31/2020, Detroit, MI
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