Complete, 100ksps, 8-Channel, 12-Bit Data Acquisition Systems

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The MAX180/MAX181 are complete 12-bit Data Acquisition System (DAS) which combine 8/6 channel input multiplexer, high bandwidth Track-and-Hold (T/H), low-drift zener reference, and flexible microprocessor (µP) interface with high conversion speed and low power consuption. The MAX180/MAX181 can be configured by a µP for unipolar or bipolar conversions and single-ended or differential inputs. Both devices sample and digitize at 100kHz throughout rate and feature a fast 8- or 16-bit µP interface.

The MAX180 has 8 analog input channels, while the MAX181 has 6. The multiplexer output of the MAX180 is fed directly into the Analog-to-Digital Converter (ADC) input. The MAX181 brings out both the multiplexer output and ADC input to separate pins, allowing a programmable gain amplifier to be inserted between the MUX and the ADC.

The systems allow the user to choose between an internal or an external reference. Furthermore, the internal reference value and the offest can be adjusted, allowing the overall system gain and offset errors to be nulled. The multiplexer has high impedence inputs, simplifying analog drive requirements.
MAX180, MAX181: Block Diagram MAX180, MAX181: Block Diagram Enlarge+

Key Features

  • 12-Bit Resolution, ±1/2 LSB Linearity
  • 8-Channel Multiplexer Inputs (MAX180)
  • Single-Ended 1-of-6 Multiplexer (MAX181)
  • Built-In Track-and Hold
  • 100kHz Sampling Rate
  • DC and Dynamically Tested
  • Internal 25ppm/°C Voltage Reference
  • Each Channel Configurable for Unipolar (0V to +5V) or Bipolar (-2.5V to +2.5V) Input Range
  • Each Channel Configurable for Single-Ended or Differential Inputs
  • Fast 8-/16-Bit µP Interface
  • +5V and -12V to -15V Supply Operation
  • 110mW Power Consumption


  • Automated Test Equipment (ATE)
  • Digital Signal Processing (DSP)
  • High-Accuracy Process Control
  • High-Speed Servo Loops

See parametric specs for Precision ADCs (< 5Msps) (432)

Part NumberResolution
Input ChannelsConv. Rate
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
External VREF
External VREF
Unipolar VIN
Bipolar VIN
ADCmaxnominalminmaxmaxmaxSee Notes
MAX180 128100SARµP/16Both-5-4.92-5.0852.5-801
$34.20 @1k
MAX181 6
$13.60 @1k

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.

MAX180EVKIT: Evaluation Kit for the MAX180
Request Reliability Report for: MAX181 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

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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