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400ksps/300ksps, Single-Supply, Low-Power, Serial 10-Bit ADCs with Internal Reference

Product Details

The MAX1084/MAX1085 10-bit analog-to-digital converters (ADCs) combine a high-bandwidth track/hold, a serial interface with high conversion speed, an internal +2.5V reference, and low power consumption. The MAX1084 operates from a single +4.5V to +5.5V supply; the MAX1085 operates from a single +2.7V to +3.6V supply.

The 3-wire serial interface connects directly to SPI™/QSPI™/MICROWIRE™ devices without external logic. The devices use an external serial-interface clock to perform successive-approximation analog-to-digital conversions.

Low power combined with ease of use and small package size make these converters ideal for remote-sensor and data-acquisition applications, or for other circuits with demanding power consumption and space requirements. The MAX1084/MAX1085 are available in 8-pin SO packages.

These devices are pin-compatible, higher-speed versions of the MAX1242/MAX1243; for more information, refer to the respective data sheets.

Key Features

  • Single-Supply Operation
    • +4.5V to +5.5V (MAX1084)
    • +2.7V to +3.6V (MAX1085)
  • 10-Bit Resolution
  • 400ksps Sampling Rate (MAX1084)
  • Internal Track/Hold
  • Internal +2.5V Reference
  • Low Power: 2.5mA (400ksps)
  • SPI/QSPI/MICROWIRE 3-Wire Serial Interface
  • Pin-Compatible, High-Speed Upgrade to MAX1242/MAX1243
  • 8-Pin SO Package

Applications/Uses

  • Battery-Powered Applications
  • Data Acquisition
  • Medical Instruments
  • Pen Digitizers
  • Portable Data Logging
  • Process Control
Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 10
# Input Channels 1
Conv. Rate (ksps) (max) 300
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 2.5
Unipolar VIN (V) (max) 2.5
INL (±LSB) 1
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes)
$6.54 @1k
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Simplified Block Diagram

MAX1084, MAX1084A, MAX1084B, MAX1085, MAX1085A, MAX1085B: Typical Operating Circuit MAX1084, MAX1084A, MAX1084B, MAX1085, MAX1085A, MAX1085B: Typical Operating Circuit Zoom icon

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Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 10
# Input Channels 1
Conv. Rate (ksps) (max) 300
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 2.5
Unipolar VIN (V) (max) 2.5
INL (±LSB) 1
Package/Pins SOIC (N)/8
Budgetary
Price (See Notes)
$6.54 @1k

Key Features

  • Single-Supply Operation
    • +4.5V to +5.5V (MAX1084)
    • +2.7V to +3.6V (MAX1085)
  • 10-Bit Resolution
  • 400ksps Sampling Rate (MAX1084)
  • Internal Track/Hold
  • Internal +2.5V Reference
  • Low Power: 2.5mA (400ksps)
  • SPI/QSPI/MICROWIRE 3-Wire Serial Interface
  • Pin-Compatible, High-Speed Upgrade to MAX1242/MAX1243
  • 8-Pin SO Package

Applications/Uses

  • Battery-Powered Applications
  • Data Acquisition
  • Medical Instruments
  • Pen Digitizers
  • Portable Data Logging
  • Process Control

Description

The MAX1084/MAX1085 10-bit analog-to-digital converters (ADCs) combine a high-bandwidth track/hold, a serial interface with high conversion speed, an internal +2.5V reference, and low power consumption. The MAX1084 operates from a single +4.5V to +5.5V supply; the MAX1085 operates from a single +2.7V to +3.6V supply.

The 3-wire serial interface connects directly to SPI™/QSPI™/MICROWIRE™ devices without external logic. The devices use an external serial-interface clock to perform successive-approximation analog-to-digital conversions.

Low power combined with ease of use and small package size make these converters ideal for remote-sensor and data-acquisition applications, or for other circuits with demanding power consumption and space requirements. The MAX1084/MAX1085 are available in 8-pin SO packages.

These devices are pin-compatible, higher-speed versions of the MAX1242/MAX1243; for more information, refer to the respective data sheets.

Simplified Block Diagram

MAX1084, MAX1084A, MAX1084B, MAX1085, MAX1085A, MAX1085B: Typical Operating Circuit MAX1084, MAX1084A, MAX1084B, MAX1085, MAX1085A, MAX1085B: Typical Operating Circuit 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