MAX180, MAX181

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

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Status Explanations for product status codes

Part Number Status
MAX180 Active: In Production. See Ordering Information for details.
MAX181 Active: In Production. See Ordering Information for details.

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.
 

Data Sheet

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An evaluation kit is available: MAX180EVKIT

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
   

Key Specifications:

Precision ADCs (< 5Msps)
Part Number Resolution
(bits)
Input Chan. Conv. Rate
(ksps)
Data Bus
(bits)
Diff/S.E. Input Internal VREF
(V)
External VREF
(V)
External VREF
(V)
Unipolar VIN
(V)
Bipolar VIN
(±V)
SINAD
(dB)
THD
(dB)
SFDR
(dB)
DNL
(±LSB)
INL
(±LSB)
Package/Pins Budgetary Price
ADC max nominal min max max max See Notes
MAX180  12 8 100 µP/16 Both -5 -4.92 -5.08 5 2.5 70 -80 80 1 1
PDIP(W)/40
PLCC/44
$21.13 @1k
MAX181  6
PDIP(W)/40
PLCC/44
$21.13 @1k
See All Precision ADCs (< 5Msps) (423)
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 prices and delivery, please see the price and availability page or contact an authorized distributor.


Diagram

MAX180, MAX181: Block Diagram
Block Diagram

Notes and Comments

Data-acquisition system with µP/12 Interface

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Information Index

Document Ref.: 19-3950 Rev 0; 1991-06-01
This page last modified: 2009-11-10




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