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Multichannel, 14-Bit, 200ksps Analog-to-Digital Converters

Multichannel, 14-Bit, 200ksps ADCs in QSOP

Product Details

The MAX1067/MAX1068 low-power, multichannel, 14-bit analog-to-digital converters (ADCs) feature a successive-approximation ADC, integrated +4.096V reference, a reference buffer, an internal oscillator, automatic power-down, and a high-speed SPI™/QSPI™/MICROWIRE™-compatible interface. The MAX1067/MAX1068 operate with a single +5V analog supply and feature a separate digital supply, allowing direct interfacing with +2.7V to +5.5V digital logic.

The MAX1067/MAX1068 consume only 3.6mA (AVDD = DVDD = +5V) at 200ksps when using an external reference. AutoShutdown™ reduces the supply current to 185µA at 10ksps and to less than 10µA at reduced sampling rates.

The MAX1067 includes a 4-channel input multiplexer, and the MAX1068 accepts up to eight analog inputs. In addition, digital signal processor (DSP)-initiated conversions are simplified with the DSP frame-sync input and output featured in the MAX1068. The MAX1068 includes a data-bit transfer input to select between 8-bit-wide or 16-bit-wide data-transfer modes. Both devices feature a scan mode that converts each channel sequentially or one channel continuously.

Excellent dynamic performance and low power, combined with ease of use and an integrated reference, make the MAX1067/MAX1068 ideal for control and data-acquisition operations or for other applications with demanding power consumption and space requirements. The MAX1067 is available in a 16-pin QSOP package, and the MAX1068 is available in a 24-pin QSOP package. Both devices are guaranteed over the commercial (0°C to +70°C) and extended (-40°C to +85°C) temperature ranges. Use the MAX1168 evaluation kit to evaluate the MAX1068.

Key Features

  • 14-Bit Resolution, ±0.5 LSB INL and ±1 LSB DNL (max)
  • +5V Single-Supply Operation
  • Adjustable Logic Level (+2.7V to +5.25V)
  • Input Voltage Range: 0 to VREF
  • Internal (+4.096V) or External (+3.8V to AVDD) Reference
  • Internal Track/Hold, 4MHz Input Bandwidth
  • Internal or External Clock
  • SPI/QSPI/MICROWIRE-Compatible Serial Interface, MAX1068 Performs DSP-Initiated Conversions
  • 8-Bit-Wide or 16-Bit-Wide Data-Transfer Mode (MAX1068 Only)
  • 4-Channel (MAX1067) or 8-Channel (MAX1068) Input Mux
    • Scan Mode Sequentially Converts Multiple Channels or One Channel Continuously
  • Low Power
    • 3.6mA at 200ksps
    • 1.85mA at 100ksps
    • 185µA at 10ksps
    • 0.6µA in Full Power-Down Mode
  • Small Package Size
    • 16-Pin QSOP (MAX1067)
    • 24-Pin QSOP (MAX1068)

Applications/Uses

  • Accelerometer Measurements
  • Data Acquisition Systems
  • Industrial I/O Modules
  • Industrial Process Controls
  • Motor Control
  • Thermocouple Measurements
Parametric specs for Precision ADCs (≤ 5Msps)
Resolution (bits) (ADC) 14
# Input Channels 4
Conv. Rate (ksps) (max) 200
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 4.096
External VREF (V) (min) 3.8
External VREF (V) (max) 5
Unipolar VIN (V) (max) 4.096
INL (±LSB) 1.5
Package/Pins QSOP/16
Budgetary
Price (See Notes)
$10.21 @1k
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Simplified Block Diagram

MAX1067, MAX1068: Pin Configuration MAX1067, MAX1068: Pin Configuration Zoom icon

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Parameters

Parametric specs for Precision ADCs (≤ 5Msps)
Resolution (bits) (ADC) 14
# Input Channels 4
Conv. Rate (ksps) (max) 200
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input S.E. Only
Internal VREF (V) (nominal) 4.096
External VREF (V) (min) 3.8
External VREF (V) (max) 5
Unipolar VIN (V) (max) 4.096
INL (±LSB) 1.5
Package/Pins QSOP/16
Budgetary
Price (See Notes)
$10.21 @1k

Key Features

  • 14-Bit Resolution, ±0.5 LSB INL and ±1 LSB DNL (max)
  • +5V Single-Supply Operation
  • Adjustable Logic Level (+2.7V to +5.25V)
  • Input Voltage Range: 0 to VREF
  • Internal (+4.096V) or External (+3.8V to AVDD) Reference
  • Internal Track/Hold, 4MHz Input Bandwidth
  • Internal or External Clock
  • SPI/QSPI/MICROWIRE-Compatible Serial Interface, MAX1068 Performs DSP-Initiated Conversions
  • 8-Bit-Wide or 16-Bit-Wide Data-Transfer Mode (MAX1068 Only)
  • 4-Channel (MAX1067) or 8-Channel (MAX1068) Input Mux
    • Scan Mode Sequentially Converts Multiple Channels or One Channel Continuously
  • Low Power
    • 3.6mA at 200ksps
    • 1.85mA at 100ksps
    • 185µA at 10ksps
    • 0.6µA in Full Power-Down Mode
  • Small Package Size
    • 16-Pin QSOP (MAX1067)
    • 24-Pin QSOP (MAX1068)

Applications/Uses

  • Accelerometer Measurements
  • Data Acquisition Systems
  • Industrial I/O Modules
  • Industrial Process Controls
  • Motor Control
  • Thermocouple Measurements

Description

The MAX1067/MAX1068 low-power, multichannel, 14-bit analog-to-digital converters (ADCs) feature a successive-approximation ADC, integrated +4.096V reference, a reference buffer, an internal oscillator, automatic power-down, and a high-speed SPI™/QSPI™/MICROWIRE™-compatible interface. The MAX1067/MAX1068 operate with a single +5V analog supply and feature a separate digital supply, allowing direct interfacing with +2.7V to +5.5V digital logic.

The MAX1067/MAX1068 consume only 3.6mA (AVDD = DVDD = +5V) at 200ksps when using an external reference. AutoShutdown™ reduces the supply current to 185µA at 10ksps and to less than 10µA at reduced sampling rates.

The MAX1067 includes a 4-channel input multiplexer, and the MAX1068 accepts up to eight analog inputs. In addition, digital signal processor (DSP)-initiated conversions are simplified with the DSP frame-sync input and output featured in the MAX1068. The MAX1068 includes a data-bit transfer input to select between 8-bit-wide or 16-bit-wide data-transfer modes. Both devices feature a scan mode that converts each channel sequentially or one channel continuously.

Excellent dynamic performance and low power, combined with ease of use and an integrated reference, make the MAX1067/MAX1068 ideal for control and data-acquisition operations or for other applications with demanding power consumption and space requirements. The MAX1067 is available in a 16-pin QSOP package, and the MAX1068 is available in a 24-pin QSOP package. Both devices are guaranteed over the commercial (0°C to +70°C) and extended (-40°C to +85°C) temperature ranges. Use the MAX1168 evaluation kit to evaluate the MAX1068.

Simplified Block Diagram

MAX1067, MAX1068: Pin Configuration MAX1067, MAX1068: Pin Configuration 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.