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MAX1240EVKIT

Evaluation Kit for the MAX1240/MAX1241

Product Details

Key Features

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 1
Conv. Rate (ksps) (max) 75
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
External VREF (V) (min) 2.5
External VREF (V) (max) 5.25
Unipolar VIN (V) (max) 4.096
Package/Pins PDIP/8
SOIC (W)/16
Budgetary
Price (See Notes)
7.39
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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 1
Conv. Rate (ksps) (max) 75
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
External VREF (V) (min) 2.5
External VREF (V) (max) 5.25
Unipolar VIN (V) (max) 4.096
Package/Pins PDIP/8
SOIC (W)/16
Budgetary
Price (See Notes)
7.39

Key Features

  • 12-Bit Resolution
  • ±½ LSB Integral Nonlinearity (MAX187A/MAX189A)
  • Internal Track/Hold, 75kHz Sampling Rate
  • Single +5V Operation
  • Low Power
    • 2µA Shutdown Current
    • 1.5mA Operating Current
  • Internal 4.096V Buffered Reference (MAX187)
  • 3-Wire Serial Interface, Compatible with SPI, QSPI, and MICROWIRE
  • Small-Footprint 8-Pin PDIP and 16-Pin SO

Applications/Uses

  • High-Accuracy Process Control
  • Isolated Data Acquisition
  • Portable Data Logging
  • Remote Digital Signal Processing

Description

The MAX187/MAX189 serial 12-bit analog-to-digital converters (ADCs) operate from a single +5V supply and accept a 0 to 5V analog input. Both parts feature an 8.5µs successive-approximation ADC, a fast track/hold (1.5µs), an on-chip clock, and a high-speed 3-wire serial interface.

The MAX187/MAX189 digitize signals at a 75ksps throughput rate. An external clock accesses data from the interface, which communicates without external hardware to most digital signal processors and microcontrollers. The interface is compatible with SPI, QSPI™, and MICROWIRE®.

The MAX187 has an on-chip buffered reference, and the MAX189 requires an external reference. Both the MAX187 and MAX189 save space with 8-pin PDIP and 16-pin SO packages. Power consumption is 7.5mW and reduces to only 10µW in shutdown.

Excellent AC characteristics and very low power consumption combined with ease of use and small package size make these converters ideal for remote DSP and sensor applications, or for circuits where power consumption and space are crucial.

Simplified Block Diagram

MAX187, MAX189: Functional Diagram MAX187, MAX189: Functional 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 .