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12-Bit, 300ksps ADCs with Differential Track/Hold, and Internal Reference

Complete Family of Low-Cost, 12-Bit, 4-/8-Channel ADCs with Internal Reference, FIFO, and SPI Interface

Product Details

The MAX11634–MAX11637 are serial 12-bit analog-to-digital converters (ADCs) with an internal reference and true differential track/hold. These devices feature on-chip FIFO, scan mode, internal clock mode, internal averaging, and AutoShutdown™. The maximum sampling rate is 300ksps using an external clock. The MAX11636/MAX11637 have 8 input channels and the MAX11634/ MAX11635 have 4 input channels. These four devices operate from either a +3V supply or a +5V supply, and contain a 10MHz SPI™-/QSPI™-/MICROWIRE™-compatible serial port.

The MAX11634–MAX11637 are available in a 16-pin QSOP package. All four devices are specified over the extended -40°C to +85°C temperature range.

Key Features

  • Analog Multiplexer with True Differential Track/Hold
    • 8-/4-Channel Single Ended
    • 4-/2-Channel True Differential
    • Unipolar or Bipolar Inputs
  • Single Supply
    • 2.7V to 3.6V (MAX11635/MAX11637)
    • 4.75V to 5.25V (MAX11634/MAX11636)
  • External Reference: 1V to VDD
  • 16-Entry First-In/First-Out (FIFO)
  • Scan Mode, Internal Averaging, and Internal Clock
  • Accuracy: ±1 LSB INL, ±1 LSB DNL, No Missing Codes Over Temperature
  • 10MHz 3-Wire SPI-/QSPI-/MICROWIRE-Compatible Interface
  • Small 16-Pin QSOP Package

Applications/Uses

  • Data Logging
  • Data-Acquisition Systems
  • Industrial Control Systems
  • Instrumentation
  • Patient Monitoring
  • System Supervision
Parametric specs for Precision ADCs (≤ 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 8
Conv. Rate (ksps) (max) 300
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 4.096
External VREF (V) (min) 0
External VREF (V) (max) 5.25
Unipolar VIN (V) (max) 4.096
Bipolar VIN (±V) (max) 2.048
INL (±LSB) 1
Package/Pins QSOP/16
Budgetary
Price (See Notes)
$3.33 @1k
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Simplified Block Diagram

MAX11634, MAX11635, MAX11636, MAX11637: Functional Diagram MAX11634, MAX11635, MAX11636, MAX11637: Functional Diagram Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Description

The MAX1231B/MAX11633/MAX11635 evaluation systems (EV systems) include one master board and one of three daughter boards. The EV systems also include Windows XP®-, Windows Vista®-, and Windows® 7-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the various ADCs. The master board (MAX116XXSPIMB) connects to a PC's USB port and allows the transfer of SPI commands to the corresponding daughter board.
The daughter boards are fully assembled and tested PCBs that demonstrate the capabilities of the MAX1030, MAX1031, MAX1230, MAX1231, MAX11624, MAX11625, MAX11632–MAX11635, MAX11642, and MAX11643 300ksps, 8-/10-/12-bit, 3V/5V, low-power, high-speed SPI ADCs with internal or external references.
Each EV kit daughter board evaluates different ADCs, but only the default ADC referenced in the EV kit daughter board is installed on the board. Contact the factory for free samples of the other pin-compatible ADCs to evaluate these devices or to order individual boards.

View Details

Features

  • USB Powered (No External Power Supply Required)
  • Daughter Board Powered by the Master Board
  • 4/16 ADC Channel Inputs
  • 10MHz SPI Interface
  • Windows XP-, Windows Vista-, and Windows 7-Compatible Software
  • Time Domain, Frequency Domain, and Histogram Plotting in the EV System Software
  • Frequency, RMS, Min, Max, and Average DC Calculations in the EV System Software
  • Collects Up to One Million Samples
  • On-Board Voltage Reference
  • Proven PCB Layout
  • Fully Assembled and Tested

Description

The MAX1231B/MAX11633/MAX11635 evaluation systems (EV systems) include one master board and one of three daughter boards. The EV systems also include Windows XP®-, Windows Vista®-, and Windows® 7-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the various ADCs. The master board (MAX116XXSPIMB) connects to a PC's USB port and allows the transfer of SPI commands to the corresponding daughter board.
The daughter boards are fully assembled and tested PCBs that demonstrate the capabilities of the MAX1030, MAX1031, MAX1230, MAX1231, MAX11624, MAX11625, MAX11632–MAX11635, MAX11642, and MAX11643 300ksps, 8-/10-/12-bit, 3V/5V, low-power, high-speed SPI ADCs with internal or external references.
Each EV kit daughter board evaluates different ADCs, but only the default ADC referenced in the EV kit daughter board is installed on the board. Contact the factory for free samples of the other pin-compatible ADCs to evaluate these devices or to order individual boards.

View Details

Features

  • USB Powered (No External Power Supply Required)
  • Daughter Board Powered by the Master Board
  • 4/16 ADC Channel Inputs
  • 10MHz SPI Interface
  • Windows XP-, Windows Vista-, and Windows 7-Compatible Software
  • Time Domain, Frequency Domain, and Histogram Plotting in the EV System Software
  • Frequency, RMS, Min, Max, and Average DC Calculations in the EV System Software
  • Collects Up to One Million Samples
  • On-Board Voltage Reference
  • Proven PCB Layout
  • Fully Assembled and Tested

Description

The MAX1231B/MAX11633/MAX11635 evaluation systems (EV systems) include one master board and one of three daughter boards. The EV systems also include Windows XP®-, Windows Vista®-, and Windows® 7-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the various ADCs. The master board (MAX116XXSPIMB) connects to a PC's USB port and allows the transfer of SPI commands to the corresponding daughter board.
The daughter boards are fully assembled and tested PCBs that demonstrate the capabilities of the MAX1030, MAX1031, MAX1230, MAX1231, MAX11624, MAX11625, MAX11632–MAX11635, MAX11642, and MAX11643 300ksps, 8-/10-/12-bit, 3V/5V, low-power, high-speed SPI ADCs with internal or external references.
Each EV kit daughter board evaluates different ADCs, but only the default ADC referenced in the EV kit daughter board is installed on the board. Contact the factory for free samples of the other pin-compatible ADCs to evaluate these devices or to order individual boards.

View Details

Features

  • USB Powered (No External Power Supply Required)
  • Daughter Board Powered by the Master Board
  • 4/16 ADC Channel Inputs
  • 10MHz SPI Interface
  • Windows XP-, Windows Vista-, and Windows 7-Compatible Software
  • Time Domain, Frequency Domain, and Histogram Plotting in the EV System Software
  • Frequency, RMS, Min, Max, and Average DC Calculations in the EV System Software
  • Collects Up to One Million Samples
  • On-Board Voltage Reference
  • Proven PCB Layout
  • Fully Assembled and Tested

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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.

Parameters

Parametric specs for Precision ADCs (≤ 5Msps)
Resolution (bits) (ADC) 12
# Input Channels 8
Conv. Rate (ksps) (max) 300
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 4.096
External VREF (V) (min) 0
External VREF (V) (max) 5.25
Unipolar VIN (V) (max) 4.096
Bipolar VIN (±V) (max) 2.048
INL (±LSB) 1
Package/Pins QSOP/16
Budgetary
Price (See Notes)
$3.33 @1k

Key Features

  • Analog Multiplexer with True Differential Track/Hold
    • 8-/4-Channel Single Ended
    • 4-/2-Channel True Differential
    • Unipolar or Bipolar Inputs
  • Single Supply
    • 2.7V to 3.6V (MAX11635/MAX11637)
    • 4.75V to 5.25V (MAX11634/MAX11636)
  • External Reference: 1V to VDD
  • 16-Entry First-In/First-Out (FIFO)
  • Scan Mode, Internal Averaging, and Internal Clock
  • Accuracy: ±1 LSB INL, ±1 LSB DNL, No Missing Codes Over Temperature
  • 10MHz 3-Wire SPI-/QSPI-/MICROWIRE-Compatible Interface
  • Small 16-Pin QSOP Package

Applications/Uses

  • Data Logging
  • Data-Acquisition Systems
  • Industrial Control Systems
  • Instrumentation
  • Patient Monitoring
  • System Supervision

Description

The MAX11634–MAX11637 are serial 12-bit analog-to-digital converters (ADCs) with an internal reference and true differential track/hold. These devices feature on-chip FIFO, scan mode, internal clock mode, internal averaging, and AutoShutdown™. The maximum sampling rate is 300ksps using an external clock. The MAX11636/MAX11637 have 8 input channels and the MAX11634/ MAX11635 have 4 input channels. These four devices operate from either a +3V supply or a +5V supply, and contain a 10MHz SPI™-/QSPI™-/MICROWIRE™-compatible serial port.

The MAX11634–MAX11637 are available in a 16-pin QSOP package. All four devices are specified over the extended -40°C to +85°C temperature range.

Simplified Block Diagram

MAX11634, MAX11635, MAX11636, MAX11637: Functional Diagram MAX11634, MAX11635, MAX11636, MAX11637: 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.