MAX188

PRODUCTION

Low-Power, 8-Channel, Serial 12-Bit ADCs

Low-Power, Single-Ended or Differential Multi-Channel, 12-Bit ADC with Bipolar Input Capabilities

Data Sheet (Rev. 5) Product Selection Table
Viewing:

Overview

  • 8-Channel Single-Ended or 4-Channel Differential Inputs
  • Single +5V or ±5V Operation
  • Low Power:
    • 1.5mA (Operating Mode)
    • 2µA (Power-Down Mode)
  • Internal Track/Hold, 133kHz Sampling Rate
  • Internal 4.096V Reference (MAX186)
  • SPI-/QSPI-/MICROWIRE-/TMS320-Compatible 4-Wire Serial Interface
  • Software-Configurable Unipolar or Bipolar Inputs
  • 20-Pin PDIP, SO, SSOP Packages
  • Evaluation Kit Available

The MAX186/MAX188 are 12-bit data-acquisition systems that combine an 8-channel multiplexer, high-bandwidth track/hold, and serial interface together with high conversion speed and ultra-low power consumption. The devices operate with a single +5V supply or dual ±5V supplies. The analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.
The 4-wire serial interface directly connects to SPI, QSPI™ and MICROWIRE® devices without external logic. A serial strobe output allows direct connection to TMS320 family digital signal processors. The MAX186/MAX188 use either the internal clock or an external serial-interface clock to perform successive-approximation A/D conversions. The serial interface can operate beyond 4MHz when the internal clock is used.
The MAX186 has an internal 4.096V reference while the MAX188 requires an external reference. Both parts have a reference-buffer amplifier that simplifies gain trim.
The MAX186/MAX188 provide a hard-wired active-low SHDN pin and two software-selectable power-down modes. Accessing the serial interface automatically powers up the devices, and the quick turn-on time allows the MAX186/MAX188 to be shut down between every conversion. Using this technique of powering down between conversions, supply current can be cut to under 10µA at reduced sampling rates.
The MAX186/MAX188 are available in 20-pin PDIP and SO packages, and in a shrink small-outline package (SSOP), that occupies 30% less area than an 8-pin PDIP. For applications that call for a parallel interface, see the MAX180/MAX181 data sheet. For anti-aliasing filters, consult the MAX274/MAX275 data sheet.

Applications

  • Automated Test Equipment (ATE)
  • Battery-Powered Applications
  • Data Acquisition
  • High-Accuracy Process Control
  • Medical Instruments
  • Portable Data Logging
  • Robotics
MAX188
Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX186, MAX188: Typical Operating Circuit
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project
Ask a Question

Documentation

Data Sheet 2

Reliability Data 1

Design Note 1

Technical Articles 1

Learn More
Add to myAnalog

Add media to the Resources section of myAnalog, to an existing project or to a new project.

Create New Project

Software Resources

Can't find the software or driver you need?

Request a Driver/Software

Hardware Ecosystem

Parts Product Life Cycle Description
Analog to Digital Converters (ADCs) 6
MAX146
PRODUCTION +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX147
PRODUCTION +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX1246
PRODUCTION +2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16
MAX1247
PRODUCTION +2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16
MAX11637
PRODUCTION 12-Bit, 300ksps ADCs with Differential Track/Hold, and Internal Reference
MAX11629
PRODUCTION 12-Bit, 300ksps ADCs with FIFO and Internal Reference
Modal heading
Add to myAnalog

Add product to the Products section of myAnalog (to receive notifications), to an existing project or to a new project.

Create New Project

Evaluation Kits

MAX186EVKIT

Evaluation Kit/Evaluation System for the MAX186

Buy Now View Details

Features and Benefits

  • Includes EV Kit and 80C32 µC Module
  • 12-Bit Resolution ADC
  • Serial µC Interface
  • Unipolar +4.096V or Bipolar -2.048V to +2.048V Input Ranges
  • Internal Reference Voltage
  • Low Supply-Current Shutdown Mode
  • Evaluates All Operating Modes
  • Proven PCB Layout
  • Prototyping Area Provided
  • Digitizes 8 Analog Inputs
  • Fully Assembled and Tested

Product Details

The MAX186 evaluation system (EV system) consists of a MAX186 evaluation kit (EV kit) connected to a Maxim 80C32 microcontroller (µC) module. The unit connects to an IBM-compatible personal computer running software provided with the MAX186 EV kit. Both boards come fully assembled and tested.

Using the EV system, the MAX186 input multiplexer can be software-configured in a variety of single-ended or differential modes with unipolar or bipolar input ranges. The MAX186 can be evaluated with a VSS voltage of 0V or -5V, selectable from the personal computer's keyboard.

The EV system is also useful for evaluating the MAX186's shutdown feature. The MAX186 can be operated in three states of readiness between conversions. There are provisions for monitoring the supply current in the different shutdown states, and for varying the delay between conversions.

Order the EV system (MAX186EVSYS-DIP) for comprehensive evaluation of the MAX186 or MAX188 using a personal computer. Order the EV kit (MAX186EVKIT-DIP) if the 80C32 module (80C32MODULE-DIP) has already been purchased with a previous Maxim EV system, or for custom use in other µC-based systems. The MAX186 EV kit can also perform limited evaluation on a stand-alone basis (see the MAX186 EV Kit Quick Start section in the full data sheet).

Applications

  • Automated Test Equipment (ATE)
  • Battery-Powered Applications
  • Data Acquisition
  • High-Accuracy Process Control
  • Medical Instruments
  • Portable Data Logging
  • Robotics
MAX186EVKIT
Evaluation Kit/Evaluation System for the MAX186

Latest Discussions

No discussions on MAX188 yet. Have something to say?

Start a Discussion on EngineerZone®

Recently Viewed