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

Product Details

Key Features

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 8
Conv. Rate (ksps) (max) 100
Data Bus µP/16
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) -5
External VREF (V) (min) -4.92
External VREF (V) (max) -5.08
Unipolar VIN (V) (max) 5
Bipolar VIN (±V) (max) 2.5
INL (±LSB) 1
Package/Pins PDIP/40
PLCC/44
Budgetary
Price (See Notes)
36.25
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Simplified Block Diagram

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Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 8
Conv. Rate (ksps) (max) 100
Data Bus µP/16
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) -5
External VREF (V) (min) -4.92
External VREF (V) (max) -5.08
Unipolar VIN (V) (max) 5
Bipolar VIN (±V) (max) 2.5
INL (±LSB) 1
Package/Pins PDIP/40
PLCC/44
Budgetary
Price (See Notes)
36.25

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

Applications/Uses

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

Description

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.

Simplified Block Diagram

MAX180, MAX181: Block Diagram MAX180, MAX181: Block 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 .